GitHub/MotorolaMobilityLLC/kernel-slsi.git
13 years agoums_realtek: do not use stack memory for DMA
Adam Cozzette [Wed, 24 Aug 2011 18:22:37 +0000 (12:22 -0600)]
ums_realtek: do not use stack memory for DMA

This patch changes rts51x_read_mem, rts51x_write_mem, and rts51x_read_status to
allocate temporary buffers with kmalloc. This way stack addresses are not used
for DMA when these functions call rts51x_bulk_transport.

Signed-off-by: Adam Cozzette <acozzette@cs.hmc.edu>
Cc: stable <stable@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB host i.MX21: remove dependency on MACH_MX21
Sascha Hauer [Wed, 24 Aug 2011 06:41:10 +0000 (08:41 +0200)]
USB host i.MX21: remove dependency on MACH_MX21

the MACH_MX* macros are scheduled for removal, so just depend
on ARCH_MXC instead. The Kconfig text makes it clear on which
SoC the driver runs on.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB gadget i.MX1: remove dependency on ARCH_MXC
Sascha Hauer [Wed, 24 Aug 2011 06:41:11 +0000 (08:41 +0200)]
USB gadget i.MX1: remove dependency on ARCH_MXC

The ARCH_MX1 scheduled for removal. Instead, depend on ARCH_MXC
and make clear in the Kconfig text that only i.MX1 has this
hardware.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: fix ipw.c build error, select USB_SERIAL_WWAN
Randy Dunlap [Tue, 23 Aug 2011 18:22:37 +0000 (11:22 -0700)]
usb: fix ipw.c build error, select USB_SERIAL_WWAN

USB_SERIAL_IPW needs to select USB_SERIAL_WWAN to fix build errors:

ipw.c:(.text+0x333841): undefined reference to `usb_wwan_close'
ipw.c:(.text+0x3339e6): undefined reference to `usb_wwan_open'
ipw.c:(.text+0x333bb9): undefined reference to `usb_wwan_release'
drivers/built-in.o:(.data+0x29dac): undefined reference to `usb_wwan_startup'
drivers/built-in.o:(.data+0x29db4): undefined reference to `usb_wwan_disconnect'
drivers/built-in.o:(.data+0x29dd4): undefined reference to `usb_wwan_write'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: fix dwc3 build when USB_GADGET_DWC3 is not enabled
Randy Dunlap [Tue, 23 Aug 2011 19:52:47 +0000 (12:52 -0700)]
usb: fix dwc3 build when USB_GADGET_DWC3 is not enabled

Fix build error when CONFIG_USB_GADGET_DWC3 is not enabled:

ERROR: "dwc3_send_gadget_ep_cmd" [drivers/usb/dwc3/dwc3.ko] undefined!

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB: use usb_endpoint_maxp() instead of le16_to_cpu()
Kuninori Morimoto [Tue, 23 Aug 2011 10:12:03 +0000 (03:12 -0700)]
USB: use usb_endpoint_maxp() instead of le16_to_cpu()

Now ${LINUX}/drivers/usb/* can use usb_endpoint_maxp(desc) to get maximum packet size
instead of le16_to_cpu(desc->wMaxPacketSize).
This patch fix it up

Cc: Armin Fuerst <fuerst@in.tum.de>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Johannes Erdfelt <johannes@erdfelt.com>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Cc: Oliver Neukum <oliver@neukum.name>
Cc: David Kubicek <dave@awk.cz>
Cc: Johan Hovold <jhovold@gmail.com>
Cc: Brad Hards <bhards@bigpond.net.au>
Acked-by: Felipe Balbi <balbi@ti.com>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Thomas Dahlmann <dahlmann.thomas@arcor.de>
Cc: David Brownell <david-b@pacbell.net>
Cc: David Lopo <dlopo@chipidea.mips.com>
Cc: Alan Stern <stern@rowland.harvard.edu>
Cc: Michal Nazarewicz <m.nazarewicz@samsung.com>
Cc: Xie Xiaobo <X.Xie@freescale.com>
Cc: Li Yang <leoli@freescale.com>
Cc: Jiang Bo <tanya.jiang@freescale.com>
Cc: Yuan-hsin Chen <yhchen@faraday-tech.com>
Cc: Darius Augulis <augulis.darius@gmail.com>
Cc: Xiaochen Shen <xiaochen.shen@intel.com>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: OKI SEMICONDUCTOR, <toshiharu-linux@dsn.okisemi.com>
Cc: Robert Jarzmik <robert.jarzmik@free.fr>
Cc: Ben Dooks <ben@simtec.co.uk>
Cc: Thomas Abraham <thomas.ab@samsung.com>
Cc: Herbert Pötzl <herbert@13thfloor.at>
Cc: Arnaud Patard <arnaud.patard@rtp-net.org>
Cc: Roman Weissgaerber <weissg@vienna.at>
Acked-by: Sarah Sharp <sarah.a.sharp@linux.intel.com>
Cc: Tony Olech <tony.olech@elandigitalsystems.com>
Cc: Florian Floe Echtler <echtler@fs.tum.de>
Cc: Christian Lucht <lucht@codemercs.com>
Cc: Juergen Stuber <starblue@sourceforge.net>
Cc: Georges Toth <g.toth@e-biz.lu>
Cc: Bill Ryder <bryder@sgi.com>
Cc: Kuba Ober <kuba@mareimbrium.org>
Cc: Inaky Perez-Gonzalez <inaky.perez-gonzalez@intel.com>
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: include module.h in the DesignWare USB3 DRD driver
Stephen Rothwell [Tue, 23 Aug 2011 05:08:54 +0000 (15:08 +1000)]
usb: include module.h in the DesignWare USB3 DRD driver

Fixes this build error:

drivers/usb/dwc3/dwc3-pci.c: In function 'dwc3_pci_init':
drivers/usb/dwc3/dwc3-pci.c:211:9: error: 'THIS_MODULE' undeclared (first use in this function)

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB: usbtest: use URB_ZERO_PACKET for BULK-OUT transfers
Sebastian Andrzej Siewior [Tue, 23 Aug 2011 08:44:54 +0000 (10:44 +0200)]
USB: usbtest: use URB_ZERO_PACKET for BULK-OUT transfers

Executing
| testusb -a -c 1 -t 3 -v 421 -s 2048

does not complete on the gadget side.
g_zero enqueues a 4096 bytes long buffer. The host sends 2048bytes which
is a multiple of wMaxPacketSize (either 64 or 512 bytes). The host is
done with sending data but the gadget waits for more.
Since the protocol does not include transfer-length-field sending a
terminating zero packet seems the only way out.

Reviewed-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: fhci-hcd: Allocate pram dynamically.
Joakim Tjernlund [Tue, 23 Aug 2011 13:23:46 +0000 (15:23 +0200)]
usb: fhci-hcd: Allocate pram dynamically.

MPC832x does not have enough MURAM to do fixed MURAM allocation.
Change to dynamic allocation.

Signed-off-by: Joakim Tjernlund <Joakim.Tjernlund@transmode.se>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb/isp1760: Clear TT buffer on interrupted low & full speed transfers
Arvid Brodin [Mon, 22 Aug 2011 23:25:30 +0000 (01:25 +0200)]
usb/isp1760: Clear TT buffer on interrupted low & full speed transfers

When a low or full speed urb in progress is unlinked (or some other error
occurs), the buffer in the transaction translator (part of the hub) might end
up in an inconsistent state. This can make all further low and full speed
transactions fail, unless the buffer is cleared.

The bug can be seen when running the usbtest unlink tests as "set altsetting
to 0 failed, -110", and gets fixed by this patch.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agodrivers/usb/host/ohci-omap3.c: test the just-initialized value
Julia Lawall [Mon, 22 Aug 2011 14:00:35 +0000 (16:00 +0200)]
drivers/usb/host/ohci-omap3.c: test the just-initialized value

Test the just-initialized value rather than some other one.

The semantic match that finds this problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@r@
identifier x,y,f!={PTR_ERR,ERR_PTR,ERR_CAST};
statement S;
@@

x = f(...);
(
if (\(x == NULL\|IS_ERR(x)\)) S
|
*if (\(y == NULL\|IS_ERR(y)\))
 { ... when != x
   return ...; }
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB: otg: remove unused function twl6030_set_phy_clk
Wanlong Gao [Sun, 21 Aug 2011 13:45:53 +0000 (21:45 +0800)]
USB: otg: remove unused function twl6030_set_phy_clk

Remove the unused function twl6030_set_phy_clk of twl6030-usb.c.

Signed-off-by: Wanlong Gao <gaowanlong@cn.fujitsu.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agos3c-hsudc: Add basic otg transceiver handling
Heiko Stübner [Sun, 21 Aug 2011 12:32:14 +0000 (14:32 +0200)]
s3c-hsudc: Add basic otg transceiver handling

Makes it possible to use i.e. gpio-vbus to handle vbus events.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agos3c-hsudc: Fix possible nullpointer dereference during probe
Heiko Stübner [Sun, 21 Aug 2011 12:31:17 +0000 (14:31 +0200)]
s3c-hsudc: Fix possible nullpointer dereference during probe

The usb-interrupt is requested before the endpoints are initalised.
If an interrupt happens in the time between request_irq and the init
of the endpoint-data (as seen on the Qisda ESx00 ebook-platforms),
it is therefore possible for the interrupt handler to access endpoint-
data before its creation resulting in a null-pointer dereference.

This patch simply moves the irq request below the endpoint init.

Signed-off-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoMAINTAINERS: add a maintainer for DesignWare USB3 driver
Felipe Balbi [Fri, 19 Aug 2011 15:10:59 +0000 (18:10 +0300)]
MAINTAINERS: add a maintainer for DesignWare USB3 driver

I'll be focussed on this driver and can maintain
it without any problem.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: Introduce DesignWare USB3 DRD Driver
Felipe Balbi [Fri, 19 Aug 2011 15:10:58 +0000 (18:10 +0300)]
usb: Introduce DesignWare USB3 DRD Driver

The DesignWare USB3 is a highly
configurable IP Core which can be
instantiated as Dual-Role Device (DRD),
Peripheral Only and Host Only (XHCI)
configurations.

Several other parameters can be configured
like amount of FIFO space, amount of TX and
RX endpoints, amount of Host Interrupters,
etc.

The current driver has been validated with
a virtual model of version 1.73a of that core
and with an FPGA burned with version 1.83a
of the DRD core. We have support for PCIe
bus, which is used on FPGA prototyping, and
for the OMAP5, more adaptation (or glue)
layers can be easily added and the driver
is half prepared to handle any possible
configuration the HW engineer has chosen
considering we have the information on
one of the GHWPARAMS registers to do
runtime checking of certain features.

More runtime checks can, and should, be added
in order to make this driver even more flexible
with regards to number of endpoints, FIFO sizes,
transfer types, etc.

While this supports only the device side, for
now, we will add support for Host side (xHCI -
see the updated series Sebastian has sent [1])
and OTG after we have it all stabilized.

[1] http://marc.info/?l=linux-usb&m=131341992020339&w=2

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: gadget: introduce gadget_is_dwc3()
Felipe Balbi [Fri, 19 Aug 2011 15:10:57 +0000 (18:10 +0300)]
usb: gadget: introduce gadget_is_dwc3()

... to check whether we're running on DesignWare
USB3 DRD Controller.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: ch9: add function defines from ch9, USB 3.0 spec
Sebastian Andrzej Siewior [Fri, 19 Aug 2011 15:10:56 +0000 (18:10 +0300)]
usb: ch9: add function defines from ch9, USB 3.0 spec

not to confuse with Table 9-7 in USB 2.0 spec

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB: EHCI: remove usages of hcd->state
Alan Stern [Thu, 18 Aug 2011 20:31:30 +0000 (16:31 -0400)]
USB: EHCI: remove usages of hcd->state

This patch (as1483) improves the ehci-hcd driver family by getting rid
of the reliance on the hcd->state variable.  It has no clear owner and
it isn't protected by the usual HCD locks.  In its place, the patch
adds a new, private ehci->rh_state field to record the state of the
root hub.

Along the way, the patch removes a couple of lines containing
redundant assignments to the state variable.  Also, the QUIESCING
state simply gets changed to the RUNNING state, because the driver
doesn't make any distinction between them.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: renesas_usbhs: use usb_endpoint_maxp()
kuninori.morimoto.gx@renesas.com [Mon, 25 Jul 2011 07:39:51 +0000 (00:39 -0700)]
usb: renesas_usbhs: use usb_endpoint_maxp()

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: add usb_endpoint_maxp() macro
kuninori.morimoto.gx@renesas.com [Mon, 25 Jul 2011 07:39:30 +0000 (00:39 -0700)]
usb: add usb_endpoint_maxp() macro

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: OHCI/EHCI support for Netlogic XLS processor.
Jayachandran C [Thu, 4 Aug 2011 19:58:22 +0000 (01:28 +0530)]
usb: OHCI/EHCI support for Netlogic XLS processor.

Add supprt for on-chip USB controller for Netlogic XLS MIPS64
SoC processor family.
Changes are:
 - update ehci-hcd.c and ohci-hcd.c to add XLS hcds
 - add ehci-xls.c: EHCI support for Netlogic XLS.
 - add ohci-xls.c: OHCI support for Netlogic XLS.

Signed-off-by: Jayachandran C <jayachandranc@netlogicmicro.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB: pxa168: Add onchip USB host controller support
Tanmay Upadhyay [Wed, 20 Jul 2011 04:30:58 +0000 (10:00 +0530)]
USB: pxa168: Add onchip USB host controller support

- Add EHCI Host controller driver
- Add wrapper that creates resources for host controller driver

v2 - Call clk_put() after clk_disable() in probe function

Signed-off-by: Tanmay Upadhyay <tanmay.upadhyay@einfochips.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: isp1362-hcd: Quieten printks
Tobias Klauser [Wed, 27 Jul 2011 06:57:25 +0000 (08:57 +0200)]
usb: isp1362-hcd: Quieten printks

These messages just clutter the log and provide no useful information to
the user, so make them pr_debug().

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Acked-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb/isp1760: Fix problems that trigger WARNING at line 1136.
Arvid Brodin [Sun, 21 Aug 2011 06:29:28 +0000 (08:29 +0200)]
usb/isp1760: Fix problems that trigger WARNING at line 1136.

1) A bug in the usage of time_after() in errata2_function().

2) Clear done_maps just prior to starting a new transfer in
   start_bus_transfer(), instead of just after, when done_map bits might have
   been validly set by the started transfer.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb/isp1760: Fix missing endpoint unlink when no mem during enqueue
Arvid Brodin [Sun, 21 Aug 2011 06:29:27 +0000 (08:29 +0200)]
usb/isp1760: Fix missing endpoint unlink when no mem during enqueue

... and some small code style fixes.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb/isp1760: Use polling instead of SOF interrupts to fix Errata 2
Arvid Brodin [Sun, 21 Aug 2011 06:29:26 +0000 (08:29 +0200)]
usb/isp1760: Use polling instead of SOF interrupts to fix Errata 2

Errata 2 for the isp1760 explains that the chip sometimes does not issue
interrupts when an ATL (bulk or control) transfer is completed. There are
several issues with the current work-around (SOF interrupts) for this:

1) It seems the chip sometimes does not even set the done bit for a
   completed transfer, in which case SOF interrupts does not solve
   the problem since we still check the done map to find out which
   transfer descriptors to handle.

2) The above point seems to happen only when ATL and SOF interrupts
   are enabled at the same time. However, disabling ATL interrupts
   increases the latency between transfer completion and handling.
   This is very noticeable in the testusb suite, which take several
   minutes more to run with ATL interrupts disabled.

This patch removes the code to switch on SOF interrupts, and instead
use a kernel timer to periodically check for "old" descriptors that
have their VALID and ACTIVE flags unset, indicating completion, thus
avoiding the dependency on the chip's done map (and SOF interrupts)
to find transfers affected by this HW bug.

[bigeasy@linutronix: 80 lines limit]

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb/isp1760: Move isp1760_run within file (prepare for next patch)
Arvid Brodin [Sun, 21 Aug 2011 06:29:25 +0000 (08:29 +0200)]
usb/isp1760: Move isp1760_run within file (prepare for next patch)

Like the previous patch, this patch has been split from the next one
for clarity.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb/isp1760: Move some code (prepare for next patch)
Arvid Brodin [Sun, 21 Aug 2011 06:29:24 +0000 (08:29 +0200)]
usb/isp1760: Move some code (prepare for next patch)

Move the few lines of code in isp1760_enable_interrupts() and
isp1760_init_maps() into isp1760_run(). This makes the following patch
easier.

Signed-off-by: Arvid Brodin <arvid.brodin@enea.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: misc: usblcd: fixed coding style issues
Zack Parsons [Fri, 29 Jul 2011 01:58:30 +0000 (18:58 -0700)]
usb: misc: usblcd: fixed coding style issues

Fixed multiple coding style issues

Signed-off-by: Zack Parsons <k3bacon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb: misc: usbled: fixed coding style issues
Zack Parsons [Fri, 29 Jul 2011 07:17:57 +0000 (00:17 -0700)]
usb: misc: usbled: fixed coding style issues

Fixed multiple coding style issues

Signed-off-by: Zack Parsons <k3bacon@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB: ipw: convert to usb-wwan framework
Oliver Neukum [Wed, 13 Jul 2011 11:54:48 +0000 (13:54 +0200)]
USB: ipw: convert to usb-wwan framework

From 2d487c10136f76cf3705881d34868e8592839cfe Mon Sep 17 00:00:00 2001
From: Oliver Neukum <oliver@neukum.org>
Date: Tue, 12 Jul 2011 15:36:51 +0200
Subject: [PATCH] USB: ipw: convert to usb-wwan framework

This patch allows the ipw driver to use the multibuffer
infrastructure of usb-wwan. This improves speed.

Signed-off-by: Oliver Neukum<oneukum@suse.de>
Tested-by: Michal Hybner <dta081@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agousb_storage: Don't freeze in usb-stor-scan
Seth Forshee [Tue, 26 Jul 2011 14:56:07 +0000 (09:56 -0500)]
usb_storage: Don't freeze in usb-stor-scan

Scanning cannot be run during suspend or hibernation, but if
usb-stor-scan freezes another thread waiting on scanning to
complete may fail to freeze.

However, if usb-stor-scan is left freezable without ever actually
freezing then the freezer will wait on it to exit, and threads
waiting for scanning to finish will no longer be blocked. One
problem with this approach is that usb-stor-scan has a delay to
wait for devices to settle (which is currently the only point where
it can freeze). To work around this we can request that the freezer
send a fake signal when freezing, then use interruptible sleep to
wake the thread early when freezing happens.

To make this happen, the following changes are made to
usb-stor-scan:

 * Use set_freezable_with_signal() instead of set_freezable() to
   request a fake signal when freezing

 * Use wait_event_interruptible_timeout() instead of
   wait_event_freezable_timeout() to avoid freezing

Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoUSB: Remove test for NULL that'll never happen in usb_disconnect()
Jesper Juhl [Mon, 11 Jul 2011 20:59:36 +0000 (22:59 +0200)]
USB: Remove test for NULL that'll never happen in usb_disconnect()

In drivers/usb/core/hub.c::usb_disconnect(), 'udev' will never be
NULL, so remove the test and printing of debug message.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
13 years agoLinux 3.1-rc3
Linus Torvalds [Mon, 22 Aug 2011 18:42:53 +0000 (11:42 -0700)]
Linux 3.1-rc3

13 years agoMerge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 22 Aug 2011 18:26:56 +0000 (11:26 -0700)]
Merge branch 'perf-urgent-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf tools: Add group event scheduling option to perf record/stat
  MAINTAINERS: Fix list of perf events source files
  perf tools: Fix build against newer glibc
  perf tools: Fix error handling of unknown events
  perf evlist: Fix missing event name init for default event
  perf list: Fix exit value

13 years agoMerge branch 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git...
Linus Torvalds [Mon, 22 Aug 2011 18:25:44 +0000 (11:25 -0700)]
Merge branch 'stable/bug.fixes' of git://git./linux/kernel/git/konrad/xen

* 'stable/bug.fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/konrad/xen:
  xen/tracing: Fix tracing config option properly
  xen: Do not enable PV IPIs when vector callback not present
  xen/x86: replace order-based range checking of M2P table by linear one
  xen: xen-selfballoon.c needs more header files

13 years agoxen/tracing: Fix tracing config option properly
Jeremy Fitzhardinge [Thu, 11 Aug 2011 20:17:20 +0000 (13:17 -0700)]
xen/tracing: Fix tracing config option properly

Steven Rostedt says we should use CONFIG_EVENT_TRACING.

Cc:Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
13 years agoxen: Do not enable PV IPIs when vector callback not present
Stefano Stabellini [Wed, 17 Aug 2011 13:15:00 +0000 (15:15 +0200)]
xen: Do not enable PV IPIs when vector callback not present

Fix regression for HVM case on older (<4.1.1) hypervisors caused by

  commit 99bbb3a84a99cd04ab16b998b20f01a72cfa9f4f
  Author: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
  Date:   Thu Dec 2 17:55:10 2010 +0000

    xen: PV on HVM: support PV spinlocks and IPIs

This change replaced the SMP operations with event based handlers without
taking into account that this only works when the hypervisor supports
callback vectors. This causes unexplainable hangs early on boot for
HVM guests with more than one CPU.

BugLink: http://bugs.launchpad.net/bugs/791850
CC: stable@kernel.org
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Tested-and-Reported-by: Stefan Bader <stefan.bader@canonical.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
13 years agoMerge branch 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1...
Linus Torvalds [Mon, 22 Aug 2011 01:13:19 +0000 (18:13 -0700)]
Merge branch 'fixes' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  firewire: core: handle ack_busy when fetching the Config ROM

13 years agoBtrfs: fix 64 bit divide problem
Josef Bacik [Sat, 20 Aug 2011 12:29:51 +0000 (08:29 -0400)]
Btrfs: fix 64 bit divide problem

This fixes a regression introduced by commit cdcb725c05fe ("Btrfs: check
if there is enough space for balancing smarter").  We can't do 64-bit
divides on 32-bit architectures.

In cases where we need to divide/multiply by 2 we should just left/right
shift respectively, and in cases where theres N number of devices use
do_div.  Also make the counters u64 to match up with rw_devices.
Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Acked-and-tested-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
Linus Torvalds [Sun, 21 Aug 2011 13:59:41 +0000 (06:59 -0700)]
Merge branch 'for_linus' of git://git./linux/kernel/git/tytso/ext4

* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4:
  ext4: flush any pending end_io requests before DIO reads w/dioread_nolock
  ext4: fix nomblk_io_submit option so it correctly converts uninit blocks
  ext4: Resolve the hang of direct i/o read in handling EXT4_IO_END_UNWRITTEN.
  ext4: call ext4_ioend_wait and ext4_flush_completed_IO in ext4_evict_inode
  ext4: Fix ext4_should_writeback_data() for no-journal mode

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6
Linus Torvalds [Sun, 21 Aug 2011 13:59:02 +0000 (06:59 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/tiwai/sound-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound-2.6:
  ALSA: sound/aoa/fabrics/layout.c: remove unneeded kfree
  ALSA: hda - Fix error check from snd_hda_get_conn_index() in patch_cirrus.c
  ALSA: hda - Don't spew too many ELD errors
  ALSA: usb-audio - Fix missing mixer dB information
  ALSA: hda - Add "PCM" volume to vmaster slave list
  ALSA: hda - Fix duplicated capture-volume creation for ALC268 models
  ALSA: ac97: Add HP Compaq dc5100 SFF(PT003AW) to Headphone Jack Sense whitelist
  ALSA: snd_usb_caiaq: track submitted output urbs

13 years agopci: fix new kernel-doc warning in pci.c
Randy Dunlap [Sat, 20 Aug 2011 18:49:43 +0000 (11:49 -0700)]
pci: fix new kernel-doc warning in pci.c

Fix new kernel-doc warning in pci.c:

  Warning(drivers/pci/pci.c:3259): No description found for parameter 'mps'
  Warning(drivers/pci/pci.c:3259): Excess function parameter 'rq' description in 'pcie_set_mps'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Cc: Jesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoALSA: sound/aoa/fabrics/layout.c: remove unneeded kfree
Julia Lawall [Sat, 20 Aug 2011 06:12:41 +0000 (08:12 +0200)]
ALSA: sound/aoa/fabrics/layout.c: remove unneeded kfree

The label outnodev is only used when kzalloc has not yet taken place or has
failed, so there is no need for the call for kfree under this label.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@@
identifier x;
expression E1!=0,E2,E3,E4;
statement S;
iterator I;
@@

(
if (...) { ... when != kfree(x)
               when != x = E3
               when != E3 = x
*  return ...;
 }
... when != x = E2
    when != I(...,x,...) S
if (...) { ... when != x = E4
 kfree(x); ... return ...; }
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoALSA: hda - Fix error check from snd_hda_get_conn_index() in patch_cirrus.c
Takashi Iwai [Sat, 20 Aug 2011 07:19:59 +0000 (09:19 +0200)]
ALSA: hda - Fix error check from snd_hda_get_conn_index() in patch_cirrus.c

snd_hda_get_conn_index() returns a negative value while the current code
stores it in an unsigned int.  It must be stored in a signed integer.

Reported-by: Jesper Juhl <jj@chaosbits.net>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoALSA: hda - Don't spew too many ELD errors
Takashi Iwai [Sat, 20 Aug 2011 07:14:45 +0000 (09:14 +0200)]
ALSA: hda - Don't spew too many ELD errors

Currently HD-audio driver shows the all error ELD byte as an error
in the kernel message.  This is annoying when the video driver doesn't
set the correct ELD from the beginning. e.g. radeon sends a zero-byte
data, but we still check ELD with the fixed 128 byte as a workaround
for some broken devices, it spews 128-times errors.

For avoiding this, the driver aborts reading when the first byte is
invalid.  In such a case, the whole data is certainly invalid.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Sat, 20 Aug 2011 06:07:08 +0000 (23:07 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/drm-intel

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/drm-intel:
  drm/i915: set GFX_MODE to pre-Ivybridge default value even on Ivybridge

13 years agoext4: flush any pending end_io requests before DIO reads w/dioread_nolock
Jiaying Zhang [Fri, 19 Aug 2011 23:13:32 +0000 (19:13 -0400)]
ext4: flush any pending end_io requests before DIO reads w/dioread_nolock

There is a race between ext4 buffer write and direct_IO read with
dioread_nolock mount option enabled. The problem is that we clear
PageWriteback flag during end_io time but will do
uninitialized-to-initialized extent conversion later with dioread_nolock.
If an O_direct read request comes in during this period, ext4 will return
zero instead of the recently written data.

This patch checks whether there are any pending uninitialized-to-initialized
extent conversion requests before doing O_direct read to close the race.
Note that this is just a bandaid fix. The fundamental issue is that we
clear PageWriteback flag before we really complete an IO, which is
problem-prone. To fix the fundamental issue, we may need to implement an
extent tree cache that we can use to look up pending to-be-converted extents.

Signed-off-by: Jiaying Zhang <jiayingz@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: stable@kernel.org
13 years agodrm/i915: set GFX_MODE to pre-Ivybridge default value even on Ivybridge
Jesse Barnes [Fri, 12 Aug 2011 22:28:32 +0000 (15:28 -0700)]
drm/i915: set GFX_MODE to pre-Ivybridge default value even on Ivybridge

Prior to Ivybridge, the GFX_MODE would default to 0x800, meaning that
MI_FLUSH would flush the TLBs in addition to the rest of the caches
indicated in the MI_FLUSH command.  However starting with Ivybridge, the
register defaults to 0x2800 out of reset, meaning that to invalidate the
TLB we need to use PIPE_CONTROL.  Since we're not doing that yet, go
back to the old default so things work.

v2: don't forget to actually *clear* the new bit

Reviewed-by: Eric Anholt <eric@anholt.net>
Reviewed-by: Chris Wilson <chris@chris-wilson.co.uk>
Tested-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
13 years agoMerge branch 'for-linus' of git://git.kernel.dk/linux-block
Linus Torvalds [Fri, 19 Aug 2011 17:47:07 +0000 (10:47 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-block

* 'for-linus' of git://git.kernel.dk/linux-block: (23 commits)
  Revert "cfq: Remove special treatment for metadata rqs."
  block: fix flush machinery for stacking drivers with differring flush flags
  block: improve rq_affinity placement
  blktrace: add FLUSH/FUA support
  Move some REQ flags to the common bio/request area
  allow blk_flush_policy to return REQ_FSEQ_DATA independent of *FLUSH
  xen/blkback: Make description more obvious.
  cfq-iosched: Add documentation about idling
  block: Make rq_affinity = 1 work as expected
  block: swim3: fix unterminated of_device_id table
  block/genhd.c: remove useless cast in diskstats_show()
  drivers/cdrom/cdrom.c: relax check on dvd manufacturer value
  drivers/block/drbd/drbd_nl.c: use bitmap_parse instead of __bitmap_parse
  bsg-lib: add module.h include
  cfq-iosched: Reduce linked group count upon group destruction
  blk-throttle: correctly determine sync bio
  loop: fix deadlock when sysfs and LOOP_CLR_FD race against each other
  loop: add BLK_DEV_LOOP_MIN_COUNT=%i to allow distros 0 pre-allocated loop devices
  loop: add management interface for on-demand device allocation
  loop: replace linked list of allocated devices with an idr index
  ...

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes...
Linus Torvalds [Fri, 19 Aug 2011 17:02:37 +0000 (10:02 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/jbarnes/pci-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
  PCI: OF: Don't crash when bridge parent is NULL.
  PCI: export pcie_bus_configure_settings symbol
  PCI: code and comments cleanup
  PCI: make cardbus-bridge resources optional
  PCI: make SRIOV resources optional
  PCI : ability to relocate assigned pci-resources
  PCI: honor child buses add_size in hot plug configuration
  PCI: Set PCI-E Max Payload Size on fabric

13 years agoPCI: OF: Don't crash when bridge parent is NULL.
David Daney [Tue, 16 Aug 2011 18:24:37 +0000 (11:24 -0700)]
PCI: OF: Don't crash when bridge parent is NULL.

In pcibios_get_phb_of_node(), we will crash while booting if
bus->bridge->parent is NULL.

Check for this case and avoid dereferencing the NULL pointer.

Signed-off-by: David Daney <david.daney@cavium.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
13 years agoRevert "cfq: Remove special treatment for metadata rqs."
Jens Axboe [Fri, 19 Aug 2011 06:34:48 +0000 (08:34 +0200)]
Revert "cfq: Remove special treatment for metadata rqs."

We have a kernel build regression since 3.1-rc1, which is about 10%
regression. The kernel source is in an ext3 filesystem.
Alex Shi bisect it to commit:
commit a07405b7802691d29ab3b23bdc76ee6d006aad0b
Author: Justin TerAvest <teravest@google.com>
Date:   Sun Jul 10 22:09:19 2011 +0200

    cfq: Remove special treatment for metadata rqs.

Apparently this is caused by lack metadata preemption, where ext3/ext4
do use READ_META. I didn't see a way to fix the issue, so suggest
reverting the patch.

This reverts commit a07405b7802691d29ab3b23bdc76ee6d006aad0b.

Reported-by: Alex Shi<alex.shi@intel.com>
Reported-by: Shaohua Li<shaohua.li@intel.com>
Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
13 years agoALSA: usb-audio - Fix missing mixer dB information
Takashi Iwai [Fri, 19 Aug 2011 05:55:10 +0000 (07:55 +0200)]
ALSA: usb-audio - Fix missing mixer dB information

The recent fix for testing dB range at the mixer creation time seems
to cause regressions in some devices.  In such devices, reading the dB
info at probing time gives an error, thus both dBmin and dBmax are still
zero, and TLV flag isn't set although the later read of dB info succeeds.

This patch adds a workaround for such a case by assuming that the later
read will succeed.  In future, a similar test should be performed in a
case where a wrong dB range is seen even in the later read.

Signed-off-by: Takashi Iwai <tiwai@suse.de>
Cc: <stable@kernel.org>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc
Linus Torvalds [Fri, 19 Aug 2011 05:49:34 +0000 (22:49 -0700)]
Merge git://git./linux/kernel/git/davem/sparc

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc:
  sparc: fix array bounds error setting up PCIC NMI trap

13 years agoMerge branch 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzi...
Linus Torvalds [Fri, 19 Aug 2011 05:48:30 +0000 (22:48 -0700)]
Merge branch 'upstream-linus' of git://git./linux/kernel/git/jgarzik/libata-dev

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  drivers/ata/sata_dwc_460ex.c: add missing kfree
  ata: Add iMX pata support
  pata_via: disable ATAPI DMA on AVERATEC 3200
  [libata] sata_sil: fix used-uninit warning

13 years agoMerge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs
Linus Torvalds [Fri, 19 Aug 2011 05:47:13 +0000 (22:47 -0700)]
Merge branch 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs

* 'bugfixes' of git://git.linux-nfs.org/projects/trondmy/linux-nfs:
  NFSv4.1: Return NFS4ERR_BADSESSION to callbacks during session resets
  NFSv4.1: Fix the callback 'highest_used_slotid' behaviour
  pnfs-obj: Fix the comp_index != 0 case
  pnfs-obj: Bug when we are running out of bio
  nfs: add missing prefetch.h include

13 years agosparc: fix array bounds error setting up PCIC NMI trap
Ian Campbell [Wed, 17 Aug 2011 22:14:57 +0000 (22:14 +0000)]
sparc: fix array bounds error setting up PCIC NMI trap

  CC      arch/sparc/kernel/pcic.o
arch/sparc/kernel/pcic.c: In function 'pcic_probe':
arch/sparc/kernel/pcic.c:359:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:359:8: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:360:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:360:8: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:361:33: error: array subscript is above array bounds [-Werror=array-bounds]
arch/sparc/kernel/pcic.c:361:8: error: array subscript is above array bounds [-Werror=array-bounds]
cc1: all warnings being treated as errors

I'm not particularly familiar with sparc but t_nmi (defined in head_32.S via
the TRAP_ENTRY macro) and pcic_nmi_trap_patch (defined in entry.S) both appear
to be 4 instructions long and I presume from the usage that instructions are
int sized.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: sparclinux@vger.kernel.org
Reviewed-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
13 years agodrivers/ata/sata_dwc_460ex.c: add missing kfree
Julia Lawall [Mon, 8 Aug 2011 11:17:57 +0000 (13:17 +0200)]
drivers/ata/sata_dwc_460ex.c: add missing kfree

Currently, error handling code in this function calls the function
sata_dwc_port_stop, but this function has essentially no effect if hsdevp
has not been stored in ap, which is the case throughout this function.  The
only effect is to print a debugging message including ap->print_id.

The code is rewritten to not call sata_dwc_port_stop, but instead to jump
to a local label that prints the original error message and the print_id
information.  In the case where hsdevp has been already allocated (but not
yet stored in ap), this value is freed as well.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
@exists@
local idexpression x;
statement S,S1;
expression E;
identifier fl;
expression *ptr != NULL;
@@

x = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
     when != if (...) { <+...kfree(x)...+> }
     when any
     when != true x == NULL
x->fl
...>
(
if (x == NULL) S1
|
if (...) { ... when != x
               when forall
(
 return \(0\|<+...x...+>\|ptr\);
|
* return ...;
)
}
)
// </smpl>

Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years agoata: Add iMX pata support
Arnaud Patard (Rtp) [Tue, 26 Jul 2011 14:58:19 +0000 (16:58 +0200)]
ata: Add iMX pata support

Add basic support for pata on iMX. It has been tested only on imx51.
SDMA support will probably be added later so this version supports only
PIO.

v2:
  - enable only when needed IORDY
  - use dev_get_drvdata
v3:
  - add missing clk_put() calls
  - use platform_get_irq()
  - fix resume code to avoid disabling IORDY on resume
v4:
  - Remove EXPERIMENTAL and switch to depends on ARCH_MXC
  - Use devm_kzalloc()
  - make clock a must-have
  - Use only 1 ioremap

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agopata_via: disable ATAPI DMA on AVERATEC 3200
Tejun Heo [Thu, 4 Aug 2011 09:15:07 +0000 (11:15 +0200)]
pata_via: disable ATAPI DMA on AVERATEC 3200

On AVERATEC 3200, pata_via causes memory corruption with ATAPI DMA,
which often leads to random kernel oops.  The cause of the problem is
not well understood yet and only small subset of machines using the
controller seem affected.  Blacklist ATAPI DMA on the machine.

Signed-off-by: Tejun Heo <tj@kernel.org>
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=11426
Reported-and-tested-by: Jim Bray <jimsantelmo@gmail.com>
Cc: Alan Cox <alan@linux.intel.com>
Cc: stable@kernel.org
Signed-off-by: Jeff Garzik <jgarzik@pobox.com>
13 years ago[libata] sata_sil: fix used-uninit warning
Jeff Garzik [Fri, 19 Aug 2011 03:52:36 +0000 (23:52 -0400)]
[libata] sata_sil: fix used-uninit warning

Init 'serror' to silence the following warning:

drivers/ata/sata_sil.c: In function ‘sil_interrupt’:
drivers/ata/sata_sil.c:453:14: warning: ‘serror’ may be used uninitialized in
this function [-Wuninitialized]

This is not a 'can never happen' but is nonetheless extremely unlikely.
The easiest and cleanest warning fix is simply to init the var,
rather than worry about marking the var uninit-ok.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs...
Linus Torvalds [Thu, 18 Aug 2011 21:20:00 +0000 (14:20 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/mason/btrfs-unstable

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/btrfs-unstable:
  Btrfs: set i_size properly when fallocating and we already
  btrfs: unlock on error in btrfs_file_llseek()
  btrfs: btrfs_permission's RO check shouldn't apply to device nodes
  Btrfs: truncate pages from clone ioctl target range
  Btrfs: fix uninitialized sync_pending
  Btrfs: fix wrong free space information
  btrfs: memory leak in btrfs_add_inode_defrag()
  Btrfs: use plain page_address() in header fields setget functions
  Btrfs: forced readonly when btrfs_drop_snapshot() fails
  Btrfs: check if there is enough space for balancing smarter
  Btrfs: fix a bug of balance on full multi-disk partitions
  Btrfs: fix an oops of log replay
  Btrfs: detect wether a device supports discard
  Btrfs: force unplugs when switching from high to regular priority bios

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Thu, 18 Aug 2011 21:19:36 +0000 (14:19 -0700)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  update cifs version to 1.75
  [CIFS] possible memory corruption on mount
  cifs: demote cERROR in build_path_from_dentry to cFYI

13 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland...
Linus Torvalds [Thu, 18 Aug 2011 21:18:55 +0000 (14:18 -0700)]
Merge branch 'for-linus' of git://git./linux/kernel/git/roland/infiniband

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/iser: Support iSCSI PDU padding
  IBiser: Fix wrong mask when sizeof (dma_addr_t) > sizeof (unsigned long)
  IPoIB: Fix possible NULL dereference in ipoib_start_xmit()

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6
Linus Torvalds [Thu, 18 Aug 2011 21:16:13 +0000 (14:16 -0700)]
Merge git://git./linux/kernel/git/hirofumi/fatfs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/hirofumi/fatfs-2.6:
  fat: fat16 support maximum 4GB file/vol size as WinXP or 7.
  fat: fix utf8 iocharset warning message
  fat: fix build warning

13 years agoirqdesc: fix new kernel-doc warning
Randy Dunlap [Thu, 18 Aug 2011 19:19:27 +0000 (12:19 -0700)]
irqdesc: fix new kernel-doc warning

Fix kernel-doc warning in irqdesc.c:

  Warning(kernel/irq/irqdesc.c:353): No description found for parameter 'owner'

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoi7core_edac: fixed typo in error count calculation
Mathias Krause [Thu, 18 Aug 2011 07:17:00 +0000 (09:17 +0200)]
i7core_edac: fixed typo in error count calculation

Based on a patch from the PaX Team, found during a clang analysis pass.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Acked-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Cc: PaX Team <pageexec@freemail.hu>
Cc: stable@kernel.org [v2.6.35+]
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'perf/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/acme...
Ingo Molnar [Thu, 18 Aug 2011 19:51:44 +0000 (21:51 +0200)]
Merge branch 'perf/urgent' of git://git./linux/kernel/git/acme/linux into perf/urgent

13 years agoupdate cifs version to 1.75
Steve French [Thu, 18 Aug 2011 04:44:35 +0000 (04:44 +0000)]
update cifs version to 1.75

Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years ago[CIFS] possible memory corruption on mount
Steve French [Thu, 18 Aug 2011 04:41:55 +0000 (04:41 +0000)]
[CIFS] possible memory corruption on mount

CIFS cleanup_volume_info_contents() looks like having a memory
corruption problem.
When UNCip is set to "&vol->UNC[2]" in cifs_parse_mount_options(), it
should not be kfree()-ed in cleanup_volume_info_contents().

Introduced in commit b946845a9dc523c759cae2b6a0f6827486c3221a

Signed-off-by: J.R. Okajima <hooanon05@yahoo.co.jp>
Reviewed-by: Jeff Layton <jlayton@redhat.com>
CC: Stable <stable@kernel.org>
Signed-off-by: Steve French <sfrench@us.ibm.com>
13 years agoMerge branch 'btrfs-3.0' into for-linus
Chris Mason [Thu, 18 Aug 2011 14:38:03 +0000 (10:38 -0400)]
Merge branch 'btrfs-3.0' into for-linus

13 years agoBtrfs: set i_size properly when fallocating and we already
Josef Bacik [Thu, 18 Aug 2011 14:36:39 +0000 (10:36 -0400)]
Btrfs: set i_size properly when fallocating and we already

xfstests exposed a problem with preallocate when it fallocates a range that
already has an extent.  We don't set the new i_size properly because we see that
we already have an extent.  This isn't right and we should update i_size if the
space already exists.  With this patch we now pass xfstests 075.  Thanks,

Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agobtrfs: unlock on error in btrfs_file_llseek()
Dan Carpenter [Thu, 18 Aug 2011 14:16:05 +0000 (10:16 -0400)]
btrfs: unlock on error in btrfs_file_llseek()

There were some unlocks on error missing in a recent patch to
btrfs_file_llseek().

Signed-off-by: Dan Carpenter <error27@gmail.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agobtrfs: btrfs_permission's RO check shouldn't apply to device nodes
Jeff Mahoney [Mon, 15 Aug 2011 17:27:21 +0000 (17:27 +0000)]
btrfs: btrfs_permission's RO check shouldn't apply to device nodes

This patch tightens the read-only access checks in btrfs_permission to
 match the constraints in inode_permission. Currently, even though the
 device node itself will be unmodified, read-write access to device nodes
 is denied to when the device node resides on a read-only subvolume or a
 is a file that has been marked read-only by the btrfs conversion utility.

 With this patch applied, the check only affects regular files,
 directories, and symlinks. It also restructures the code a bit so that
 we don't duplicate the MAY_WRITE check for both tests.

Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoALSA: hda - Add "PCM" volume to vmaster slave list
Takashi Iwai [Thu, 18 Aug 2011 13:13:17 +0000 (15:13 +0200)]
ALSA: hda - Add "PCM" volume to vmaster slave list

The new parser may use "PCM" volume, but it was missing the vmaster
slave list, thus "Master" volume didn't control it.

Reference: https://bugzilla.kernel.org/show_bug.cgi?id=41342

Signed-off-by: Takashi Iwai <tiwai@suse.de>
13 years agoperf tools: Add group event scheduling option to perf record/stat
Lin Ming [Wed, 17 Aug 2011 10:42:07 +0000 (18:42 +0800)]
perf tools: Add group event scheduling option to perf record/stat

Group event scheduling command line option is missing in perf
record/stat.

Add it to perf record/stat, which is same as in perf top.

Reported-by: Andi Kleen <andi@firstfloor.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/1313577727.2754.5.camel@hp6530s
Signed-off-by: Lin Ming <ming.m.lin@intel.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
13 years agoMAINTAINERS: Fix list of perf events source files
Geunsik Lim [Thu, 18 Aug 2011 07:44:57 +0000 (16:44 +0900)]
MAINTAINERS: Fix list of perf events source files

Recent changes made kernel/perf_event.c be split and moved to
kernel/events/.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Jiri Kosina <trivial@kernel.org>
Cc: Joe Perches <joe@perches.com>
Cc: Li Zefan <lizf@cn.fujitsu.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1313653497-27263-1-git-send-email-leemgs1@gmail.com
Signed-off-by: Geunsik Lim <geunsik.lim@samsung.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
13 years agoperf tools: Fix build against newer glibc
Josh Boyer [Thu, 18 Aug 2011 11:37:21 +0000 (07:37 -0400)]
perf tools: Fix build against newer glibc

Upstream glibc commit 295e904 added a definition for __attribute_const__
to cdefs.h.  This causes the following error when building perf:

util/include/linux/compiler.h:8:0: error: "__attribute_const__"
redefined [-Werror] /usr/include/sys/cdefs.h:226:0: note: this is the
location of the previous definition

Wrap __attribute_const__ in #ifndef as we do for __always_inline.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/20110818113720.GL2227@zod.bos.redhat.com
Signed-off-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
13 years agoperf tools: Fix error handling of unknown events
Stephane Eranian [Sat, 23 Jul 2011 02:10:43 +0000 (04:10 +0200)]
perf tools: Fix error handling of unknown events

There was a problem with the parse_events() code not printing the
correct event name when an event was unknown and starting with an 'r'.
The source of the problem was the way raw notation was parsed.

Without the patch:
$ perf stat -e retired_foo
invalid event modifier: 'tired_foo'

With the patch:
$ perf stat -e retired_foo
invalid or unsupported event: 'retired_foo'

This also covers the case where the name of the event was not printed at
all when perf was linked with libpfm4.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20110723021043.GA20178@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
13 years agoperf evlist: Fix missing event name init for default event
Stephane Eranian [Tue, 7 Jun 2011 16:19:36 +0000 (18:19 +0200)]
perf evlist: Fix missing event name init for default event

When no event is given to perf record, perf top, a default event is
initialized (cycles). However, perf_evlist__add_default() was not
setting the symbolic name for the event. Perf top worked simply because
it was reconstructing the name from the event code. But it should not
have to do this. This patch initializes the evsel->name field properly.

This second version improves the code flow on the non error path.

Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20110607161936.GA8163@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
[committer note: Use perf_evsel__delete() instead of plain free()]
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
13 years agoperf list: Fix exit value
Stephane Eranian [Mon, 23 May 2011 12:39:17 +0000 (14:39 +0200)]
perf list: Fix exit value

This patch fixes an issue with the exit value of perf list:

$ perf list; echo $?
129

perf list returns an error exit code even though there is no error.

There was a stray exit(129) in print_events(). This patch removes this
exit().

$ perf list; echo $?
0

$ perf list hw sw
  cpu-cycles OR cycles                               [Hardware event]
  stalled-cycles-frontend OR idle-cycles-frontend    [Hardware event]
  stalled-cycles-backend OR idle-cycles-backend      [Hardware event]
  instructions                                       [Hardware event]
  cache-references                                   [Hardware event]
  cache-misses                                       [Hardware event]
  branch-instructions OR branches                    [Hardware event]
  branch-misses                                      [Hardware event]
  bus-cycles                                         [Hardware event]

  cpu-clock                                          [Software event]
  task-clock                                         [Software event]
  page-faults OR faults                              [Software event]
  minor-faults                                       [Software event]
  major-faults                                       [Software event]
  context-switches OR cs                             [Software event]
  cpu-migrations OR migrations                       [Software event]
  alignment-faults                                   [Software event]
  emulation-faults                                   [Software event]
$ echo $?
0

Cc: Frederic Weisbecker <fweisbec@gmail.com>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20110523123917.GA31060@quad
Signed-off-by: Stephane Eranian <eranian@google.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
13 years agobefs: Validate length of long symbolic links.
Timo Warns [Wed, 17 Aug 2011 15:59:56 +0000 (17:59 +0200)]
befs: Validate length of long symbolic links.

Signed-off-by: Timo Warns <warns@pre-sense.de>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm
Linus Torvalds [Wed, 17 Aug 2011 20:15:25 +0000 (13:15 -0700)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/linux-pm

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm:
  PM / Domains: Fix build for CONFIG_PM_RUNTIME unset

13 years agomm: fix __page_to_pfn for a const struct page argument
Ian Campbell [Wed, 17 Aug 2011 16:40:33 +0000 (17:40 +0100)]
mm: fix __page_to_pfn for a const struct page argument

This allows the cast in lowmem_page_address (introduced as a warning
fixup to 33dd4e0ec911 "mm: make some struct page's const") to be
removed.

Propagate const'ness to page_to_section() as well since it is required
by __page_to_pfn.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agomm: make HASHED_PAGE_VIRTUAL page_address' struct page argument const.
Ian Campbell [Wed, 17 Aug 2011 12:45:09 +0000 (13:45 +0100)]
mm: make HASHED_PAGE_VIRTUAL page_address' struct page argument const.

Followup to 33dd4e0ec911 "mm: make some struct page's const" which missed the
HASHED_PAGE_VIRTUAL case.

Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
Cc: Andrea Arcangeli <aarcange@redhat.com>
Cc: Rik van Riel <riel@redhat.com>
Cc: Michel Lespinasse <walken@google.com>
Cc: Mel Gorman <mel@csn.ul.ie>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoMerge branches 'ipoib' and 'iser' into for-next
Roland Dreier [Wed, 17 Aug 2011 17:57:43 +0000 (10:57 -0700)]
Merge branches 'ipoib' and 'iser' into for-next

13 years agoMerge branch 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 17 Aug 2011 17:31:39 +0000 (10:31 -0700)]
Merge branch 'perf-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  perf probe: Filter out redundant inline-instances
  perf probe: Search concrete out-of-line instances
  perf probe: Avoid searching variables in intermediate scopes
  perf probe: Fix to search local variables in appropriate scope
  perf probe: Warn when more than one line are given
  perf probe: Fix to walk all inline instances
  perf probe: Fix to search nested inlined functions in CU
  perf probe: Fix line walker to check CU correctly
  perf probe: Fix a memory leak for scopes array
  perf: fix temporary file ownership check
  perf report: Use properly build_id kernel binaries
  perf top browser: Remove spurious helpline update

13 years agoMerge branch 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 17 Aug 2011 17:28:33 +0000 (10:28 -0700)]
Merge branch 'timers-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'timers-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  rtc: Limit RTC PIE frequency
  rtc: Fix hrtimer deadlock
  rtc: Handle errors correctly in rtc_irq_set_state()

Fixup trivial conflicts in drivers/rtc/interface.c due to slightly
trivially versions of the same patch coming in two different ways.

13 years agoMerge branch 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 17 Aug 2011 17:25:08 +0000 (10:25 -0700)]
Merge branch 'core-fixes-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  lockdep: Fix wrong assumption in match_held_lock

13 years agoMerge branch 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Wed, 17 Aug 2011 17:23:50 +0000 (10:23 -0700)]
Merge branch 'irq-urgent-for-linus' of git://git./linux/kernel/git/tip/linux-2.6-tip

* 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip:
  irq: Track the owner of irq descriptor
  irq: Always set IRQF_ONESHOT if no primary handler is specified
  genirq: Fix wrong bit operation

13 years agoIB/iser: Support iSCSI PDU padding
Or Gerlitz [Mon, 1 Aug 2011 21:14:09 +0000 (21:14 +0000)]
IB/iser: Support iSCSI PDU padding

RFC3270 mandates that iSCSI PDUs are padded to the closest integer
number of four byte words.  Fix the iser code to support that on both
the TX/RX flows.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
13 years agoIBiser: Fix wrong mask when sizeof (dma_addr_t) > sizeof (unsigned long)
Or Gerlitz [Mon, 1 Aug 2011 21:12:09 +0000 (21:12 +0000)]
IBiser: Fix wrong mask when sizeof (dma_addr_t) > sizeof (unsigned long)

The code that prepares the SG associated with SCSI command for FMR was
buggy for systems with DMA addresses that don't fit in unsigned long,
e.g under the 32-bit based XenServer dom0 sizeof(dma_addr_t) is 8.

Fix that by casting to unsigned long long a masking constant used by
the code. This resolves a crash in iser_sg_to_page_vec on this system.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.co.il>
Signed-off-by: Roland Dreier <roland@purestorage.com>
13 years agoxen/x86: replace order-based range checking of M2P table by linear one
Jan Beulich [Tue, 16 Aug 2011 14:07:41 +0000 (15:07 +0100)]
xen/x86: replace order-based range checking of M2P table by linear one

The order-based approach is not only less efficient (requiring a shift
and a compare, typical generated code looking like this

mov eax, [machine_to_phys_order]
mov ecx, eax
shr ebx, cl
test ebx, ebx
jnz ...

whereas a direct check requires just a compare, like in

cmp ebx, [machine_to_phys_nr]
jae ...

), but also slightly dangerous in the 32-on-64 case - the element
address calculation can wrap if the next power of two boundary is
sufficiently far away from the actual upper limit of the table, and
hence can result in user space addresses being accessed (with it being
unknown what may actually be mapped there).

Additionally, the elimination of the mistaken use of fls() here (should
have been __fls()) fixes a latent issue on x86-64 that would trigger
if the code was run on a system with memory extending beyond the 44-bit
boundary.

CC: stable@kernel.org
Signed-off-by: Jan Beulich <jbeulich@novell.com>
[v1: Based on Jeremy's feedback]
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
13 years agofat: fat16 support maximum 4GB file/vol size as WinXP or 7.
Namjae Jeon [Wed, 17 Aug 2011 10:10:09 +0000 (19:10 +0900)]
fat: fat16 support maximum 4GB file/vol size as WinXP or 7.

FAT16 support maximum 4GB vol/file size with 64KB cluster size.

Win NT/XP/7 increased the maximum cluster size to 64KB, and file/vol
size increased 4GB also.  Although increasing, the file size of linux
FAT is still limited at 2GB.

I found that it is limited by sb->maxbytes(0x7fffffff) when partition
is formatted by FAT16.  sb->s_maxbytes in fill_super should be set to
0xffffffff like fat32.

Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
13 years agofat: fix utf8 iocharset warning message
Mihai Moldovan [Wed, 17 Aug 2011 10:10:08 +0000 (19:10 +0900)]
fat: fix utf8 iocharset warning message

The fat_msg function already formats the given message and appends
a newline to it - we don't need to do this in the passed message
string as well, or will end up with a blank line printed in the
kernel log ring buffer.

Also change the loglevel from error to warning.

Signed-off-by: Mihai Moldovan <ionic@ionic.de>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
13 years agofat: fix build warning
Jonas Aberg [Wed, 17 Aug 2011 10:10:06 +0000 (19:10 +0900)]
fat: fix build warning

This fixes a compile warning (unititialized variable) in
the fat filesystem code.

Signed-off-by: Jonas Aberg <jonas.aberg@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: OGAWA Hirofumi <hirofumi@mail.parknet.co.jp>
13 years agoBtrfs: truncate pages from clone ioctl target range
Sage Weil [Wed, 10 Aug 2011 18:04:04 +0000 (18:04 +0000)]
Btrfs: truncate pages from clone ioctl target range

We need to truncate page cache pages for the clone ioctl target range or
else we'll confuse ourselves to no end.  If the old data was cached, we
used to still see it (until remount).  If the page was partially updated
we used to get a mix of old and new data.

Signed-off-by: Sage Weil <sage@newdream.net>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
13 years agoBtrfs: fix uninitialized sync_pending
Miao Xie [Fri, 5 Aug 2011 09:32:37 +0000 (09:32 +0000)]
Btrfs: fix uninitialized sync_pending

sync_pending is uninitialized before it be used, fix it.

Signed-off-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>