Eric Sandeen [Tue, 18 Aug 2009 03:48:51 +0000 (23:48 -0400)]
ext4: reject too-large filesystems on 32-bit kernels
ext4 will happily mount a > 16T filesystem on a 32-bit box, but
this is not safe; writes to the block device will wrap past 16T
and the page cache can't index past 16T (232 index * 4k pages).
Adding another test to the existing "too many sectors" test
should do the trick.
Add a comment, a relevant return value, and fix the reference
to the CONFIG_LBD(AF) option as well.
Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
H Hartley Sweeten [Tue, 18 Aug 2009 02:38:04 +0000 (22:38 -0400)]
jbd2: bitfields should be unsigned
This fixes sparse noise:
error: dubious one-bit signed bitfield
Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Cc: Jan Kara <jack@ucw.cz>
Jan Kara [Tue, 18 Aug 2009 02:17:20 +0000 (22:17 -0400)]
ext4: Fix possible deadlock between ext4_truncate() and ext4_get_blocks()
During truncate we are sometimes forced to start a new transaction as
the amount of blocks to be journaled is both quite large and hard to
predict. So far we restarted a transaction while holding i_data_sem
and that violates lock ordering because i_data_sem ranks below a
transaction start (and it can lead to a real deadlock with
ext4_get_blocks() mapping blocks in some page while having a
transaction open).
We fix the problem by dropping the i_data_sem before restarting the
transaction and acquire it afterwards. It's slightly subtle that this
works:
1) By the time ext4_truncate() is called, all the page cache for the
truncated part of the file is dropped so get_block() should not be
called on it (we only have to invalidate extent cache after we
reacquire i_data_sem because some extent from not-truncated part could
extend also into the part we are going to truncate).
2) Writes, migrate or defrag hold i_mutex so they are stopped for all
the time of the truncate.
This bug has been found and analyzed by Theodore Tso <tytso@mit.edu>.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Jan Kara [Tue, 18 Aug 2009 01:23:17 +0000 (21:23 -0400)]
jbd2: Annotate transaction start also for jbd2_journal_restart()
lockdep annotation for a transaction start has been at the end of
jbd2_journal_start(). But a transaction is also started from
jbd2_journal_restart(). Move the lockdep annotation to start_this_handle()
which covers both cases.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Mingming [Fri, 18 Sep 2009 17:34:55 +0000 (13:34 -0400)]
ext4: Show unwritten extent flag in ext4_ext_show_leaf()
ext4_ext_show_leaf() will display the leaf extents when extent
debugging is enabled.
Printing out the unwritten bit is useful for debugging unwritten
extent, allow us to see the unwritten extents vs written extents,
after the unwritten extents are splitted or converted.
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Mingming [Tue, 1 Sep 2009 12:44:37 +0000 (08:44 -0400)]
ext4: Compile warning fix when EXT_DEBUG enabled
When EXT_DEBUG is enabled I received the following compile warning on
PPC64:
CC [M] fs/ext4/inode.o
CC [M] fs/ext4/extents.o
fs/ext4/extents.c: In function ‘ext4_ext_rm_leaf’:
fs/ext4/extents.c:2097: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 2 has type ‘ext4_lblk_t’
fs/ext4/extents.c: In function ‘ext4_ext_get_blocks’:
fs/ext4/extents.c:2789: warning: format ‘%u’ expects type ‘unsigned int’, but argument 4 has type ‘long unsigned int’
fs/ext4/extents.c:2852: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 3 has type ‘ext4_lblk_t’
fs/ext4/extents.c:2953: warning: format ‘%lu’ expects type ‘long unsigned int’, but argument 4 has type ‘unsigned int’
CC [M] fs/ext4/migrate.o
The patch fixes compile warning.
Signed-off-by: Mingming Cao <cmm@us.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Index: linux-2.6.31-rc4/fs/ext4/extents.c
===================================================================
Theodore Ts'o [Fri, 18 Sep 2009 17:34:02 +0000 (13:34 -0400)]
ext4: Avoid group preallocation for closed files
Currently the group preallocation code tries to find a large (512)
free block from which to do per-cpu group allocation for small files.
The problem with this scheme is that it leaves the filesystem horribly
fragmented. In the worst case, if the filesystem is unmounted and
remounted (after a system shutdown, for example) we forget the fact
that wee were using a particular (now-partially filled) 512 block
extent. So the next time we try to allocate space for a small file,
we will find *another* completely free 512 block chunk to allocate
small files. Given that there are 32,768 blocks in a block group,
after 64 iterations of "mount, write one 4k file in a directory,
unmount", the block group will have 64 files, each separated by 511
blocks, and the block group will no longer have any free 512
completely free chunks of blocks for group preallocation space.
So if we try to allocate blocks for a file that has been closed, such
that we know the final size of the file, and the filesystem is not
busy, avoid using group preallocation.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Theodore Ts'o [Mon, 10 Aug 2009 02:01:13 +0000 (22:01 -0400)]
ext4: Fix bugs in mballoc's stream allocation mode
The logic around sbi->s_mb_last_group and sbi->s_mb_last_start was all
screwed up. These fields were getting unconditionally all the time,
set even when stream allocation had not taken place, and if they were
being used when the file was smaller than s_mb_stream_request, which
is when the allocation should _not_ be doing stream allocation.
Fix this by determining whether or not we stream allocation should
take place once, in ext4_mb_group_or_file(), and setting a flag which
gets used in ext4_mb_regular_allocator() and ext4_mb_use_best_found().
This simplifies the code and assures that we are consistently using
(or not using) the stream allocation logic.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Theodore Ts'o [Sun, 9 Aug 2009 20:46:13 +0000 (16:46 -0400)]
ext4: Display the mballoc flags in mb_history in hex instead of decimal
Displaying the flags in base 16 makes it easier to see which flags
have been set.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Theodore Ts'o [Fri, 18 Sep 2009 17:38:55 +0000 (13:38 -0400)]
ext4: Add configurable run-time mballoc debugging
Allow mballoc debugging to be enabled at run-time instead of just at
compile time.
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Peng Tao [Tue, 11 Aug 2009 03:05:28 +0000 (23:05 -0400)]
ext4: fix journal ref count in move_extent_par_page
move_extent_par_page calls a_ops->write_begin() to increase journal
handler's reference count. However, if either mext_replace_branches()
or ext4_get_block fails, the increased reference count isn't
decreased. This will cause a later attempt to umount of the fs to hang
forever. The patch addresses the issue by calling ext4_journal_stop()
if page is not NULL (which means a_ops->write_end() isn't invoked).
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Andreas Dilger [Tue, 11 Aug 2009 02:51:53 +0000 (22:51 -0400)]
jbd2: round commit timer up to avoid uncommitted transaction
fix jiffie rounding in jbd commit timer setup code. Rounding down
could cause the timer to be fired before the corresponding transaction
has expired. That transaction can stay not committed forever if no
new transaction is created or expicit sync/umount happens.
Signed-off-by: Alex Zhuravlev (Tomas) <alex.zhuravlev@sun.com>
Signed-off-by: Andreas Dilger <adilger@sun.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Roel Kluin [Tue, 11 Aug 2009 02:47:22 +0000 (22:47 -0400)]
ext4: remove redundant test on unsigned
unsigned i_block cannot be less than 0.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Peng Tao [Tue, 28 Jul 2009 01:44:40 +0000 (21:44 -0400)]
ext4: fix build warning when EXT4FS_DEBUG is on
When compiling with EXT4FS_DEBUG on, gcc will complain with following warnings:
linux-2.6/fs/ext4/ialloc.c: In function ‘ext4_count_free_inodes’:
linux-2.6/fs/ext4/ialloc.c:1192: warning: format ‘%lu’ expects type
‘long unsigned int’, but argument 2 has type ‘ext4_group_t’
So add a type cast to suppress it.
Signed-off-by: Peng Tao <bergwolf@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Akira Fujita [Mon, 6 Jul 2009 03:04:36 +0000 (23:04 -0400)]
ext4: Fix compile warnings with MB_DEBUG
When MB_DEBUG is enabled, we get some compile warnings because
ext4_group_t is unsigned int. This patch fixes them.
Signed-off-by Akira Fujita <a-fujita@rs.jp.nec.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Joe Perches [Mon, 6 Jul 2009 02:33:08 +0000 (22:33 -0400)]
ext4: Remove unnecessary semicolons in mballoc.c
Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Curt Wohlgemuth [Fri, 17 Jul 2009 14:54:08 +0000 (10:54 -0400)]
ext4: More buffer head reference leaks
After the patch I posted last week regarding buffer head ref leaks in
no-journal mode, I looked at all the code that uses buffer heads and
searched for more potential leaks.
The patch below fixes the issues I found; these can occur even when a
journal is present.
The change to inode.c fixes a double release if
ext4_journal_get_create_access() fails.
The changes to namei.c are more complicated. add_dirent_to_buf() will
release the input buffer head EXCEPT when it returns -ENOSPC. There are
some callers of this routine that don't always do the brelse() in the event
that -ENOSPC is returned. Unfortunately, to put this fix into ext4_add_entry()
required capturing the return value of make_indexed_dir() and
add_dirent_to_buf().
Signed-off-by: Curt Wohlgemuth <curtw@google.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Jan Kara [Fri, 17 Jul 2009 14:40:01 +0000 (10:40 -0400)]
jbd2: Fail to load a journal if it is too short
Due to on disk corruption, it can happen that journal is too short. Fail
to load it in such case so that we don't oops somewhere later.
Signed-off-by: Jan Kara <jack@suse.cz>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Theodore Ts'o [Tue, 28 Jul 2009 03:09:47 +0000 (23:09 -0400)]
ext4: Avoid null pointer dereference when decoding EROFS w/o a journal
We need to check to make sure a journal is present before checking the
journal flags in ext4_decode_error().
Signed-off-by: Eric Sesterhenn <eric.sesterhenn@lsexperts.de>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Manish Katiyar [Tue, 28 Jul 2009 01:38:17 +0000 (21:38 -0400)]
ext4: Fix typo in ext4/Kconfig
Signed-off-by: Manish Katiyar <mkatiyar@gmail.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Aneesh Kumar K.V [Fri, 17 Jul 2009 13:01:04 +0000 (09:01 -0400)]
ext4: Fix memory leak fix when mounting an ext4 filesystem
The allocation of the ext4_group_info array was moved to a new
function ext4_mb_add_group_info() in commit
5f21b0e6 so that online
resize would use a common (and correct) codepath. Unfortunately, the
call to the new ext4_mb_add_group_info() function was added without
removing the code which originally allocated the array. This caused a
memory leak each time an ext4 filesystem was mounted.
The fix is simple; remove the code that did the original allocation,
since it is no longer needed.
Reported-by: Catalin Marinas <catalin.marinas@arm.com>
Tested-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>
Linus Torvalds [Wed, 16 Sep 2009 15:27:10 +0000 (08:27 -0700)]
Merge git://git./linux/kernel/git/gregkh/driver-core-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core-2.6:
Driver Core: devtmpfs - kernel-maintained tmpfs-based /dev
debugfs: Modify default debugfs directory for debugging pktcdvd.
debugfs: Modified default dir of debugfs for debugging UHCI.
debugfs: Change debugfs directory of IWMC3200
debugfs: Change debuhgfs directory of trace-events-sample.h
debugfs: Fix mount directory of debugfs by default in events.txt
hpilo: add poll f_op
hpilo: add interrupt handler
hpilo: staging for interrupt handling
driver core: platform_device_add_data(): use kmemdup()
Driver core: Add support for compatibility classes
uio: add generic driver for PCI 2.3 devices
driver-core: move dma-coherent.c from kernel to driver/base
mem_class: fix bug
mem_class: use minor as index instead of searching the array
driver model: constify attribute groups
UIO: remove 'default n' from Kconfig
Driver core: Add accessor for device platform data
Driver core: move dev_get/set_drvdata to drivers/base/dd.c
Driver core: add new device to bus's list before probing
Linus Torvalds [Wed, 16 Sep 2009 15:11:54 +0000 (08:11 -0700)]
Merge git://git./linux/kernel/git/gregkh/staging-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/staging-2.6: (641 commits)
Staging: remove sxg driver
Staging: remove heci driver
Staging: remove at76_usb wireless driver.
Staging: rspiusb: remove the driver
Staging: meilhaus: remove the drivers
Staging: remove me4000 driver.
Staging: line6: ffzb returns an unsigned integer
Staging: line6: pod.c: style cleanups
Staging: iio: introduce missing kfree
Staging: dream: introduce missing kfree
Staging: comedi: addi-data: NULL dereference of amcc in v_pci_card_list_init()
Staging: vt665x: fix built-in compiling
Staging: rt3090: enable NATIVE_WPA_SUPPLICANT_SUPPORT option
Staging: rt3090: port changes in WPA_MIX_PAIR_CIPHER to rt3090
Staging: rt3090: rename device from raX to wlanX
Staging: rt3090: remove possible conflict with rt2860
Staging: rt2860/rt2870/rt3070/rt3090: fix compiler warning on x86_64
Staging: rt2860: add new device ids
Staging: rt3090: add device id 1462:891a
Staging: asus_oled: Cleaned up checkpatch issues.
...
Linus Torvalds [Wed, 16 Sep 2009 15:11:23 +0000 (08:11 -0700)]
Merge git://git./linux/kernel/git/gregkh/pcmcia-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/pcmcia-2.6:
pcmcia: document return value of pcmcia_loop_config
pcmcia: dtl1_cs: fix pcmcia_loop_config logic
pcmcia: drop non-existant includes
pcmcia: disable prefetch/burst for OZ6933
pcmcia: fix incorrect argument order to list_add_tail()
pcmcia: drivers/pcmcia/pcmcia_resource.c: Remove unnecessary semicolons
pcmcia: Use phys_addr_t for physical addresses
pcmcia: drivers/pcmcia: Make static
Linus Torvalds [Wed, 16 Sep 2009 14:49:54 +0000 (07:49 -0700)]
Merge branch 'linux-next' of git://git./linux/kernel/git/jbarnes/pci-2.6
* 'linux-next' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6: (75 commits)
PCI hotplug: clean up acpi_run_hpp()
PCI hotplug: acpiphp: use generic pci_configure_slot()
PCI hotplug: shpchp: use generic pci_configure_slot()
PCI hotplug: pciehp: use generic pci_configure_slot()
PCI hotplug: add pci_configure_slot()
PCI hotplug: clean up acpi_get_hp_params_from_firmware() interface
PCI hotplug: acpiphp: don't cache hotplug_params in acpiphp_bridge
PCI hotplug: acpiphp: remove superfluous _HPP/_HPX evaluation
PCI: Clear saved_state after the state has been restored
PCI PM: Return error codes from pci_pm_resume()
PCI: use dev_printk in quirk messages
PCI / PCIe portdrv: Fix pcie_portdrv_slot_reset()
PCI Hotplug: convert acpi_pci_detect_ejectable() to take an acpi_handle
PCI Hotplug: acpiphp: find bridges the easy way
PCI: pcie portdrv: remove unused variable
PCI / ACPI PM: Propagate wake-up enable for devices w/o ACPI support
ACPI PM: Replace wakeup.prepared with reference counter
PCI PM: Introduce device flag wakeup_prepared
PCI / ACPI PM: Rework some debug messages
PCI PM: Simplify PCI wake-up code
...
Fixed up conflict in arch/powerpc/kernel/pci_64.c due to OF device tree
scanning having been moved and merged for the 32- and 64-bit cases. The
'needs_freset' initialization added in
6e19314cc ("PCI/powerpc: support
PCIe fundamental reset") is now in arch/powerpc/kernel/pci_of_scan.c.
Linus Torvalds [Wed, 16 Sep 2009 14:46:34 +0000 (07:46 -0700)]
Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block
* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
block: fix linkage problem with blk_iopoll and !CONFIG_BLOCK
Linus Torvalds [Wed, 16 Sep 2009 14:45:38 +0000 (07:45 -0700)]
Merge branch 'writeback' of git://git.kernel.dk/linux-2.6-block
* 'writeback' of git://git.kernel.dk/linux-2.6-block:
writeback: fix possible bdi writeback refcounting problem
writeback: Fix bdi use after free in wb_work_complete()
writeback: improve scalability of bdi writeback work queues
writeback: remove smp_mb(), it's not needed with list_add_tail_rcu()
writeback: use schedule_timeout_interruptible()
writeback: add comments to bdi_work structure
writeback: splice dirty inode entries to default bdi on bdi_destroy()
writeback: separate starting of sync vs opportunistic writeback
writeback: inline allocation failure handling in bdi_alloc_queue_work()
writeback: use RCU to protect bdi_list
writeback: only use bdi_writeback_all() for WB_SYNC_NONE writeout
fs: Assign bdi in super_block
writeback: make wb_writeback() take an argument structure
writeback: merely wakeup flusher thread if work allocation fails for WB_SYNC_NONE
writeback: get rid of wbc->for_writepages
fs: remove bdev->bd_inode_backing_dev_info
Nick Piggin [Tue, 15 Sep 2009 19:37:55 +0000 (21:37 +0200)]
writeback: fix possible bdi writeback refcounting problem
wb_clear_pending AFAIKS should not be called after the item has been
put on the list, except by the worker threads. It could lead to the
situation where the refcount is decremented below 0 and cause lots of
problems.
Presumably the !wb_has_dirty_io case is not a common one, so it can
be discovered when the thread wakes up to check?
Also add a comment in bdi_work_clear.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Nick Piggin [Tue, 15 Sep 2009 19:34:51 +0000 (21:34 +0200)]
writeback: Fix bdi use after free in wb_work_complete()
By the time bdi_work_on_stack gets evaluated again in bdi_work_free, it
can already have been deallocated and used for something else in the
!on stack case, giving a false positive in this test and causing
corruption.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Nick Piggin [Tue, 15 Sep 2009 19:34:12 +0000 (21:34 +0200)]
writeback: improve scalability of bdi writeback work queues
If you're going to do an atomic RMW on each list entry, there's not much
point in all the RCU complexities of the list walking. This is only going
to help the multi-thread case I guess, but it doesn't hurt to do now.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Nick Piggin [Tue, 15 Sep 2009 19:32:58 +0000 (21:32 +0200)]
writeback: remove smp_mb(), it's not needed with list_add_tail_rcu()
list_add_tail_rcu contains required barriers.
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Tue, 15 Sep 2009 19:27:40 +0000 (21:27 +0200)]
writeback: use schedule_timeout_interruptible()
Gets rid of a manual set_current_state().
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Tue, 15 Sep 2009 18:04:57 +0000 (20:04 +0200)]
writeback: add comments to bdi_work structure
And document its retriever, get_next_work_item().
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Mon, 14 Sep 2009 10:57:56 +0000 (12:57 +0200)]
writeback: splice dirty inode entries to default bdi on bdi_destroy()
We cannot safely ensure that the inodes are all gone at this point
in time, and we must not destroy this bdi with inodes having off it.
So just splice our entries to the default bdi since that one will
always persist.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Wed, 16 Sep 2009 13:13:54 +0000 (15:13 +0200)]
writeback: separate starting of sync vs opportunistic writeback
bdi_start_writeback() is currently split into two paths, one for
WB_SYNC_NONE and one for WB_SYNC_ALL. Add bdi_sync_writeback()
for WB_SYNC_ALL writeback and let bdi_start_writeback() handle
only WB_SYNC_NONE.
Push down the writeback_control allocation and only accept the
parameters that make sense for each function. This cleans up
the API considerably.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Sun, 13 Sep 2009 18:07:36 +0000 (20:07 +0200)]
writeback: inline allocation failure handling in bdi_alloc_queue_work()
This gets rid of work == NULL in bdi_queue_work() and puts the
OOM handling where it belongs.
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Mon, 14 Sep 2009 11:12:40 +0000 (13:12 +0200)]
writeback: use RCU to protect bdi_list
Now that bdi_writeback_all() no longer handles integrity writeback,
it doesn't have to block anymore. This means that we can switch
bdi_list reader side protection to RCU.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Tue, 15 Sep 2009 07:53:35 +0000 (09:53 +0200)]
writeback: only use bdi_writeback_all() for WB_SYNC_NONE writeout
Data integrity writeback must use bdi_start_writeback() and ensure
that wbc->sb and wbc->bdi are set.
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Wed, 16 Sep 2009 13:02:33 +0000 (15:02 +0200)]
fs: Assign bdi in super_block
We do this automatically in get_sb_bdev() from the set_bdev_super()
callback. Filesystems that have their own private backing_dev_info
must assign that in ->fill_super().
Note that ->s_bdi assignment is required for proper writeback!
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Wed, 16 Sep 2009 13:18:25 +0000 (15:18 +0200)]
writeback: make wb_writeback() take an argument structure
We need to be able to pass in range_cyclic as well, so instead
of growing yet another argument, split the arguments into a
struct wb_writeback_args structure that we can use internally.
Also makes it easier to just copy all members to an on-stack
struct, since we can't access work after clearing the pending
bit.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Christoph Hellwig [Fri, 11 Sep 2009 07:47:56 +0000 (09:47 +0200)]
writeback: merely wakeup flusher thread if work allocation fails for WB_SYNC_NONE
Since it's an opportunistic writeback and not a data integrity action,
don't punt to blocking writeback. Just wakeup the thread and it will
flush old data.
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Tue, 15 Sep 2009 13:10:20 +0000 (15:10 +0200)]
writeback: get rid of wbc->for_writepages
It's only set, it's never checked. Kill it.
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Tue, 15 Sep 2009 07:43:56 +0000 (09:43 +0200)]
fs: remove bdev->bd_inode_backing_dev_info
It has been unused since it was introduced in:
commit
520808bf20e90fdbdb320264ba7dd5cf9d47dcac
Author: Andrew Morton <akpm@osdl.org>
Date: Fri May 21 00:46:17 2004 -0700
[PATCH] block device layer: separate backing_dev_info infrastructure
So lets just kill it.
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Jens Axboe [Tue, 15 Sep 2009 19:53:11 +0000 (21:53 +0200)]
block: fix linkage problem with blk_iopoll and !CONFIG_BLOCK
kernel/built-in.o:(.data+0x17b0): undefined reference to `blk_iopoll_enabled'
Since the extern declaration makes the compile work, but the actual
symbol is missing when block/blk-iopoll.o isn't linked in.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
Ingo Molnar [Tue, 15 Sep 2009 09:00:26 +0000 (11:00 +0200)]
slub: Fix build error in kmem_cache_open() with !CONFIG_SLUB_DEBUG
This build bug:
mm/slub.c: In function 'kmem_cache_open':
mm/slub.c:2476: error: 'disable_higher_order_debug' undeclared (first use in this function)
mm/slub.c:2476: error: (Each undeclared identifier is reported only once
mm/slub.c:2476: error: for each function it appears in.)
Triggers because there's no !CONFIG_SLUB_DEBUG definition for
disable_higher_order_debug.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
Greg Kroah-Hartman [Tue, 15 Sep 2009 17:09:27 +0000 (10:09 -0700)]
Staging: remove sxg driver
Unfortunatly, the upstream company has abandonded development of this
driver. So it's best to just remove the driver from the tree.
Cc: Christopher Harrer <charrer@alacritech.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Fri, 11 Sep 2009 16:46:35 +0000 (09:46 -0700)]
Staging: remove heci driver
Intel has officially abandoned this project and does not want to
maintian it or have it included in the main kernel tree, as no one
should use the code, it's not needed anymore.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 3 Sep 2009 18:58:09 +0000 (11:58 -0700)]
Staging: remove at76_usb wireless driver.
There is already an in-kernel driver for this hardware (since 2.6.30),
at76c50x-usb, and it supports all of the same devices. So this driver
can now be deleted.
Acked-by: Kalle Valo <kalle.valo@iki.fi>
Cc: linux-wireless <linux-wireless@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 3 Sep 2009 04:33:06 +0000 (21:33 -0700)]
Staging: rspiusb: remove the driver
No one cares, it's a custom userspace interface, and the code hasn't
built in a long time. So remove it.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 3 Sep 2009 04:29:37 +0000 (21:29 -0700)]
Staging: meilhaus: remove the drivers
The comedi drivers should be used instead, no need to have
these in here as well.
Cc: David Kiliani <mail@davidkiliani.de>
Cc: Meilhaus Support <support@meilhaus.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 3 Sep 2009 04:27:08 +0000 (21:27 -0700)]
Staging: remove me4000 driver.
The comedi drivers should be used instead, no need to have
this driver in the tree duplicating that one.
Cc: Wolfgang Beiter <w.beiter@aon.at>
Cc: Guenter Gebhardt <g.gebhardt@meilhaus.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Frederik Deweerdt [Mon, 14 Sep 2009 08:52:37 +0000 (08:52 +0000)]
Staging: line6: ffzb returns an unsigned integer
find_first_zero_bit returns a positive value, use it accordingly.
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@xprog.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Frederik Deweerdt [Mon, 14 Sep 2009 08:51:38 +0000 (08:51 +0000)]
Staging: line6: pod.c: style cleanups
Line6 pod.c: Minor style cleanups
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@xprog.eu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Julia Lawall [Fri, 11 Sep 2009 16:22:27 +0000 (18:22 +0200)]
Staging: iio: introduce missing kfree
Error handling code following a kmalloc or kzalloc should free the
allocated data.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,x->f1,...)
)
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Julia Lawall [Fri, 11 Sep 2009 16:22:27 +0000 (18:22 +0200)]
Staging: dream: introduce missing kfree
Error handling code following a kmalloc or kzalloc should free the
allocated data.
The semantic match that finds the problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@r exists@
local idexpression x;
statement S;
expression E;
identifier f,f1,l;
position p1,p2;
expression *ptr != NULL;
@@
x@p1 = \(kmalloc\|kzalloc\|kcalloc\)(...);
...
if (x == NULL) S
<... when != x
when != if (...) { <+...x...+> }
(
x->f1 = E
|
(x->f1 == NULL || ...)
|
f(...,x->f1,...)
)
...>
(
return \(0\|<+...x...+>\|ptr\);
|
return@p2 ...;
)
@script:python@
p1 << r.p1;
p2 << r.p2;
@@
print "* file: %s kmalloc %s return %s" % (p1[0].file,p1[0].line,p2[0].line)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Roel Kluin [Mon, 31 Aug 2009 08:54:37 +0000 (10:54 +0200)]
Staging: comedi: addi-data: NULL dereference of amcc in v_pci_card_list_init()
amcc allocation may fail, prevent a NULL dereference.
allocation may fail, prevent a dereference.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alexander Beregalov [Thu, 3 Sep 2009 16:38:14 +0000 (20:38 +0400)]
Staging: vt665x: fix built-in compiling
Fix this build error:
undefined reference to "__this_module"
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Bartlomiej Zolnierkiewicz [Tue, 8 Sep 2009 20:35:41 +0000 (22:35 +0200)]
Staging: rt3090: enable NATIVE_WPA_SUPPLICANT_SUPPORT option
Similarly as it has been done in other in-kernel Ralink drivers
and in openSUSE's rt3090sta package.
Cc: Axel Koellhofer <rain_maker@root-forum.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Axel K [Thu, 3 Sep 2009 20:04:59 +0000 (22:04 +0200)]
Staging: rt3090: port changes in WPA_MIX_PAIR_CIPHER to rt3090
This patch ports a change recently applied to rt2860/rt2870 in order to
change handling of WPA1/WPA2 mixed mode to rt3090.
Signed-off-by: Axel Koellhofer <rain_maker@root-forum.org>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Axel K [Thu, 3 Sep 2009 19:53:37 +0000 (21:53 +0200)]
Staging: rt3090: rename device from raX to wlanX
This patch sets "wlan" as the default suffix for naming the device, a
change which has also been previously applied to rt2860/rt2870 in
staging.
Signed-off-by: Axel Koellhofer <rain_maker@root-forum.org>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Axel K [Thu, 3 Sep 2009 19:24:19 +0000 (21:24 +0200)]
Staging: rt3090: remove possible conflict with rt2860
Both drivers (rt2860 and rt3090) register themselves as "rt2860" on
loading the module.
In the very rare case of somebody having two cards in his machine, one
using rt3090 and the other one using the rt2860 driver, loading both
modules would be impossible, the second one will not be loaded as the
kernel will tell you that the driver is already registered.
This was also present with rt2870/rt3070 (with both driver registering
as "rt2870"), but the code has been merged to one driver recently.
The follwoing patch fixes this potential problem until merging of
rt2860/rt3090 code to a single driver.
Signed-off-by: Axel Koellhofer <rain_maker@root-forum.org>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Axel K [Thu, 3 Sep 2009 19:13:56 +0000 (21:13 +0200)]
Staging: rt2860/rt2870/rt3070/rt3090: fix compiler warning on x86_64
When compiling rt2860/rt2870/rt3070 or rt3090 on x86_64, the following warning
is displayed:
drivers/staging/rt3090/rt_linux.c: In function 'duplicate_pkt':
drivers/staging/rt3090/rt_linux.c:531: warning: passing argument 1 of 'memmove' makes pointer from integer without a cast
include2/asm/string_64.h:58: note: expected 'void *' but argument is of type 'sk_buff_data_t'
drivers/staging/rt3090/rt_linux.c:533: warning: passing argument 1 of 'memmove' makes pointer from integer without a cast
include2/asm/string_64.h:58: note: expected 'void *' but argument is of type 'sk_buff_data_t'
The following patch fixes this warning.
Credits go to Helmut Schaa <hschaa@suse.de> for his kind advice/help on this
patch.
Signed-off-by: Axel Koellhofer <rain_maker@root-forum.org>
Cc: Helmut Schaa <hschaa@suse.de>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Axel K [Thu, 3 Sep 2009 18:53:36 +0000 (20:53 +0200)]
Staging: rt2860: add new device ids
This patch adds new device IDs to ralink rt2860 driver in linux staging. The
device IDs were retrieved from the latest vendor release (version 2.1.2.0).
Signed-off-by: Axel Koellhofer <rain_maker@root-forum.org>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Axel K [Thu, 3 Sep 2009 18:47:11 +0000 (20:47 +0200)]
Staging: rt3090: add device id 1462:891a
This patch adds a new device ID (1462:819a) to ralink rt3090 driver in linux
staging. The device ID was retrieved from the latest vendor release (version
2.2.0.0).
Signed-off-by: Axel Koellhofer <rain_maker@root-forum.org>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Kevin A. Granade [Sat, 5 Sep 2009 06:03:39 +0000 (01:03 -0500)]
Staging: asus_oled: Cleaned up checkpatch issues.
Signed-off-by: Kevin A. Granade <kevin.granade@gmail.com>
Cc: Belisko Marek <marek.belisko@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Roel Kluin [Mon, 31 Aug 2009 10:26:43 +0000 (12:26 +0200)]
Staging: rt2860: fix possible NULL dereferences
Allocations may fail, prevent NULL dereferences.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Acked-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Julia Lawall [Mon, 31 Aug 2009 19:34:25 +0000 (21:34 +0200)]
Staging: rtl8192e: Drop unnecessary NULL test
The result of container_of should not be NULL. In particular, in this case
the argument to the enclosing function has passed though INIT_WORK, which
dereferences it, implying that its container cannot be NULL.
A simplified version of the semantic patch that makes this change is as
follows:
(http://www.emn.fr/x-info/coccinelle/)
// <smpl>
@@
identifier fn,work,x,fld;
type T;
expression E1,E2;
statement S;
@@
static fn(struct work_struct *work) {
... when != work = E1
x = container_of(work,T,fld)
... when != x = E2
- if (x == NULL) S
...
}
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Fri, 11 Sep 2009 21:20:21 +0000 (14:20 -0700)]
Staging: vt665x: rename the module binary
So it doesn't conflict with a mainline kernel driver
currently under development.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Tue, 25 Aug 2009 23:26:56 +0000 (16:26 -0700)]
Staging: cowloop: remove kernel version checks
Now that the code is in the kernel tree, remove the unneeded version
checks.
Cc: "H.J. Thomassen" <hjt@ATComputing.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Tue, 25 Aug 2009 23:00:48 +0000 (16:00 -0700)]
Staging: add cowloop to the build
Now that the code can build, let's add it to the build system.
Cc: "H.J. Thomassen" <hjt@ATComputing.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Tue, 25 Aug 2009 23:04:46 +0000 (16:04 -0700)]
Staging: cowloop: add TODO file
Add a TODO file with a few things that needs to be fixed up.
Cc: "H.J. Thomassen" <hjt@ATComputing.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Tue, 25 Aug 2009 23:01:33 +0000 (16:01 -0700)]
Staging: get cowloop to build properly
There has been some block api changes since the last
release of the cowloop code. This patch updates the code to
properly build.
Cc: "H.J. Thomassen" <hjt@ATComputing.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
H.J. Thomassen [Tue, 25 Aug 2009 22:39:04 +0000 (15:39 -0700)]
Staging: add cowloop driver
Cowloop is a "copy-on-write" pseudo block driver. It can
be stacked on top of a "real" block driver, and catches
all write operations on their way from the file systems
layer above to the real driver below, effectively shielding
the lower driver from those write accesses. The requests are
then diverted to an ordinary file, located somewhere else
(configurable). Later read requests are checked to see whether
they can be serviced by the "real" block driver below, or
must be pulled in from the diverted location. More information
is on the project's website http://www.ATComputing.nl/cowloop/
From: "H.J. Thomassen" <hjt@ATComputing.nl>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 24 Aug 2009 21:40:50 +0000 (14:40 -0700)]
Staging: rtl8192e: fix timeouts on firmware download
We need to actually wait a specific ammount of time, not just hope that
a set number of loops will be long enough.
Based on a conversation with Ralink, and a proposed patch for their
older kernel driver.
Cc: david woo <xinhua_wu@realsil.com.cn>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Thu, 20 Aug 2009 13:14:22 +0000 (06:14 -0700)]
Staging: rtl8192e: fix for stack bug
This should be a fix for the lockup bug when attaching to an access
point.
Patch came from a diff from RealTek. Hopefully it resolves the issue.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Fri, 14 Aug 2009 23:11:28 +0000 (16:11 -0700)]
Staging: rtl8192e: remove annoying printk()
This message doesn't need to be constantly sent to the syslog,
it's nothing but annoying gibberish.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 12 Aug 2009 23:50:57 +0000 (16:50 -0700)]
Staging: rtl8192e: remove unneeded ieee80211 files
These files are not even built or used, so just remove them.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 12 Aug 2009 23:39:54 +0000 (16:39 -0700)]
Staging: rtl8192e: coding style cleanups on r819xE_firmware.c
This cleans up everything but a few 80 column issues in the
r819xE_firmware.c file.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 12 Aug 2009 23:37:49 +0000 (16:37 -0700)]
Staging: rtl8192e: remove another firmware header file not being used
The built-in firmware images are never used, the firmware files
are downloaded to the device through the standard firmware interface.
This removes the firmware header file as it's not ever used.
It also removes a .h file as it is not needed.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 12 Aug 2009 23:37:49 +0000 (16:37 -0700)]
Staging: rtl8192e: remove firmware header file not being used
This removes the r819xP firmware file that is never used.
The size of the built code after this patch is identical to before it.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 12 Aug 2009 23:37:26 +0000 (16:37 -0700)]
Staging: rtl8192e: remove kernel version checks
This removes a lot of code that is never built in to the driver.
The size of the built code after this patch is identical to before it.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Wed, 12 Aug 2009 23:36:38 +0000 (16:36 -0700)]
Staging: rtl8192e: remove #if 0 sections
This removes a lot of code that is never built in to the driver.
The size of the built code after this patch is identical to before it.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Jeff Mahoney [Tue, 4 Aug 2009 14:26:19 +0000 (10:26 -0400)]
Staging: rtl8192e: compile fixes
This patch removes -fhard-float and the software float helpers. In-kernel
floating point is not allowed.
Signed-off-by: Jeff Mahoney <jeffm@suse.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 10 Aug 2009 23:33:53 +0000 (16:33 -0700)]
Staging: rtl8192e: remove unused functions
This removes a number of unused functions.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Mon, 10 Aug 2009 23:34:22 +0000 (16:34 -0700)]
Staging: rtl8192e: fix lots of sparse warnings
This removes a number of static and extern warnings that sparse
complains about.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Greg Kroah-Hartman [Tue, 4 Aug 2009 22:57:55 +0000 (15:57 -0700)]
Staging: add Realtek 8192 PCI wireless driver
This wireless driver should work for the Realtek 8192 PCI devices.
It comes directly from Realtek and has been tested to work on at least
one laptop in the wild.
Cc: Anthony Wong <awong1@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Evgeniy Polyakov [Fri, 28 Aug 2009 13:57:58 +0000 (17:57 +0400)]
Staging: pohmelfs: sync with the development tree
* cache coherency protocol fix
* proper timeout handling
* implement dump/del all config group command
(Signed-off-by: Pierpaolo Giacomin <yrz@anche.no>)
Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alexander Beregalov [Tue, 25 Aug 2009 13:25:44 +0000 (17:25 +0400)]
Staging: agnx: remove flush_workqueue()
mac80211 already does flush_workqueue() at stop/start and
suspend\resume.
(fix build error)
Signed-off-by: Alexander Beregalov <a.beregalov@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Roel Kluin [Tue, 25 Aug 2009 13:19:27 +0000 (15:19 +0200)]
Staging: comedi: apci3200: fix test of ui_DelayTime range in i_APCI3200_CommandTestAnalogInput()
For ui_DelayTime to be less than 1 and greater than 1023 is logically
impossible.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Bill Pemberton <wfp5p@virginia.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Roel Kluin [Sat, 22 Aug 2009 17:32:44 +0000 (19:32 +0200)]
Staging: rspiusb: Check usb_buffer_map_sg() retval
usb_buffer_map_sg() may return -1, check this directly.
Signed-off-by: Roel Kluin <roel.kluin@gmail.com>
Reviewed-by: Jiri Slaby <jirislaby@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Sudhakar Rajashekhara [Thu, 20 Aug 2009 22:13:18 +0000 (18:13 -0400)]
Staging: panel: Add support for TI CLCD interface
On TI DA850/OMAP-L138 EVM, HD44780 (24x2) LCD panel is being
used[1], but it is interfaced through the SoC specific LCD
interface and not through parallel port. A parallel port
driver has been developed which interfaces to the panel driver
through the SoC specific LCD interface.
Basically, both the serial and parallel interfaces supported
by the panel driver do not suit the specific interface SoC is
supporting so, a new interface type has been introduced.
Ideally the panel driver should be de-coupled from parallel
and serial port related items but this patch is something
that can be merged in the meantime.
[1]Specification of the character LCD interface on TI DA850/OMAP-L138:
http://www.ti.com/litv/pdf/sprufm0a.
Signed-off-by: Sudhakar Rajashekhara <sudhakar.raj@ti.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:03:38 +0000 (11:03 +0100)]
Staging: et131x: kill off the TXDMA CSR type
Go to a u32 and masks
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:03:29 +0000 (11:03 +0100)]
Staging: et131x: kill off the TXDMA error type
This isn't actually used properly anyway
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:03:21 +0000 (11:03 +0100)]
Staging: et131x: re-order the initpci code to match usual Linux style
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:03:09 +0000 (11:03 +0100)]
Staging: et131x: prune all the debug code
We don't need it, we have a perfectly good set of debug tools. For this pass
keep a few debug printks around which are "should not happen" items
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:02:43 +0000 (11:02 +0100)]
Staging: et131x: kill the loopback type
Kill off the loopback type in the driver
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:02:34 +0000 (11:02 +0100)]
Staging: et131x: kill MSI type
Kill off the MSI structure
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:02:25 +0000 (11:02 +0100)]
Staging: et131x: put the jagcore routines in with their users
We have two trivial IRQ routines, a single statement and a real function -
relocate them. While we are at it kill the trivial to sort out soft reset
and slv bits in the same areas of code.
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:02:12 +0000 (11:02 +0100)]
Staging: et131x: kill the interrupt magic define and types
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Alan Cox [Thu, 27 Aug 2009 10:02:05 +0000 (11:02 +0100)]
Staging: et131x: clean up MP_FLAG macros
Signed-off-by: Alan Cox <alan@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
projects / GitHub / moto-9609 / android_kernel_motorola_exynos9610.git / log