GitHub/LineageOS/android_kernel_motorola_exynos9610.git
16 years agox86: update reference for PAE tlb flushing
Jeremy Fitzhardinge [Mon, 4 Feb 2008 15:48:02 +0000 (16:48 +0100)]
x86: update reference for PAE tlb flushing

Remove bogus reference to "Pentium-II erratum A13" and point to the
actual canonical source of information about what requirements x86
processors have for PAE pagetable updates.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: pud_clear: only reload cr3 if necessary
Jeremy Fitzhardinge [Mon, 4 Feb 2008 15:48:02 +0000 (16:48 +0100)]
x86: pud_clear: only reload cr3 if necessary

Rather than unconditionally reloading cr3, only do so if the pud we're
updating is within the active pgd.

This eliminates TLB flushes most of the time.  The
performance-critical uses of pud_clear are during execve and exit, but
in those cases cr3 is referring to some other pagetable.  The only
other use of pud_clear is during a large (1Gbyte+) munmap, and those
are sufficiently rare that a couple of cr3 reloads won't hurt.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: revert "defer cr3 reload when doing pud_clear()"
Jeremy Fitzhardinge [Mon, 4 Feb 2008 15:48:02 +0000 (16:48 +0100)]
x86: revert "defer cr3 reload when doing pud_clear()"

Revert "defer cr3 reload when doing pud_clear()" since I'm going to
replace it.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: unify PAE/non-PAE pgd_ctor
Jeremy Fitzhardinge [Mon, 4 Feb 2008 15:48:02 +0000 (16:48 +0100)]
x86: unify PAE/non-PAE pgd_ctor

The constructors for PAE and non-PAE pgd_ctors are more or less
identical, and can be made into the same function.

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Cc: William Irwin <wli@holomorphy.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agodocumentation: add Documentation/x86-64/00-INDEX
Rob Landley [Mon, 4 Feb 2008 15:48:02 +0000 (16:48 +0100)]
documentation: add Documentation/x86-64/00-INDEX

Signed-off-by: Rob Landley <rob@landley.net>
Cc: Vojtech Pavlik <vojtech@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: remove misleading comments in trampoline_*.S
Pavel Machek [Mon, 4 Feb 2008 15:48:01 +0000 (16:48 +0100)]
x86: remove misleading comments in trampoline_*.S

Both trampolines actually *do* set up stack. (Is the "we jump into
compressed/head.S" comment still true?)

Signed-off-by: Pavel Machek <pavel@suse.cz>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: sparse errors from string_32.h
Harvey Harrison [Mon, 4 Feb 2008 15:48:01 +0000 (16:48 +0100)]
x86: sparse errors from string_32.h

include/asm/string_32.h:216:26: warning: cast truncates bits from constant value (cccccccc becomes cc)
include/asm/string_32.h:219:27: warning: cast truncates bits from constant value (cccccccc becomes cccc)
include/asm/string_32.h:222:27: warning: cast truncates bits from constant value (cccccccc becomes cccc)
include/asm/string_32.h:223:30: warning: cast truncates bits from constant value (cccccccc becomes cc)

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: remove long dead cyrix mtrr code
Harvey Harrison [Mon, 4 Feb 2008 15:48:01 +0000 (16:48 +0100)]
x86: remove long dead cyrix mtrr code

cyrix_arr_init was #if 0 all the way back to at least v2.6.12.

This was the only place where arr3_protected was set to anything
but zero.  Eliminate this variable.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agoasm-generic/tlb.h: remove <linux/quicklist.h>
H. Peter Anvin [Mon, 4 Feb 2008 15:48:00 +0000 (16:48 +0100)]
asm-generic/tlb.h: remove <linux/quicklist.h>

Remove unused <linux/quicklist.h> from <asm-generic/tlb.h>; per
Christoph Lameter this should have been part of a previous patch
reversal but apparently didn't get removed.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86 setup: print missing CPU features in cleartext
H. Peter Anvin [Mon, 4 Feb 2008 15:48:00 +0000 (16:48 +0100)]
x86 setup: print missing CPU features in cleartext

Instead of obscure numbers, print the list of missing CPU features in
cleartext.  To conserve space, use a host program (mkcpustr.c) to
produce a compact list of mandatory features only.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: unify CPU feature string names
H. Peter Anvin [Mon, 4 Feb 2008 15:48:00 +0000 (16:48 +0100)]
x86: unify CPU feature string names

Move the CPU feature string names to a separate file (common to 32
and 64 bits); additionally, make <asm/cpufeature.h> includable by host
code in preparation for including the CPU feature strings in the boot
code.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: reintroduce volatile keyword in prototype to clflush()
H. Peter Anvin [Mon, 4 Feb 2008 15:48:00 +0000 (16:48 +0100)]
x86: reintroduce volatile keyword in prototype to clflush()

The volatile keyword was removed from the clflush() prototype
in commit e34907ae180f4fe6c28bb4516c679c2f81b0c9ed; the comment there
states:

    x86: remove volatile keyword from clflush.

    the p parameter is an explicit memory reference, and is
    enough to prevent gcc to being nasty here. The volatile
    seems completely not needed.

This reflects incorrect understanding of the function of the volatile
keyword there.  The purpose of the volatile keyword is informing gcc
that it is safe to pass a volatile pointer to this function.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: cpuid, msr: use inode mutex instead of big kernel lock
H. Peter Anvin [Mon, 4 Feb 2008 15:47:59 +0000 (16:47 +0100)]
x86: cpuid, msr: use inode mutex instead of big kernel lock

Instead of grabbing the BKL on seek, use the inode mutex in the style
of generic_file_llseek().

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: cpuid: allow querying %ecx-sensitive CPUID levels
H. Peter Anvin [Mon, 4 Feb 2008 15:47:59 +0000 (16:47 +0100)]
x86: cpuid: allow querying %ecx-sensitive CPUID levels

After /dev/*/cpuid was introduced, Intel changed the semantics of the
CPUID instruction to be sentitive to %ecx as well as %eax.  This patch
allows querying of %ecx-sensitive levels by placing the %ecx value in
the upper 32 bits of the file position (lower 32 bits always were used
for the %eax value.)

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in include/asm-x86/uaccess_64.h
H. Peter Anvin [Mon, 4 Feb 2008 15:47:59 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in include/asm-x86/uaccess_64.h

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in include/asm-x86/uaccess_64.h.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in include/asm-x86/uaccess_32.h
H. Peter Anvin [Mon, 4 Feb 2008 15:47:59 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in include/asm-x86/uaccess_32.h

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in include/asm-x86/uaccess_32.h.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in include/asm-x86/system.h
H. Peter Anvin [Mon, 4 Feb 2008 15:47:58 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in include/asm-x86/system.h

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in include/asm-x86/system.h.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in include/asm-x86/msr.h
H. Peter Anvin [Mon, 4 Feb 2008 15:47:58 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in include/asm-x86/msr.h

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in include/asm-x86/msr.h.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in include/asm-x86/i387.h
H. Peter Anvin [Mon, 4 Feb 2008 15:47:58 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in include/asm-x86/i387.h

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in include/asm-x86/i387.h.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in include/asm-x86/futex.h
H. Peter Anvin [Mon, 4 Feb 2008 15:47:58 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in include/asm-x86/futex.h

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in include/asm-x86/futex.h.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in arch/x86/mm/init_32.c
H. Peter Anvin [Mon, 4 Feb 2008 15:47:58 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in arch/x86/mm/init_32.c

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in arch/x86/mm/init_32.c.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in arch/x86/lib/usercopy_64.c
H. Peter Anvin [Mon, 4 Feb 2008 15:47:57 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in arch/x86/lib/usercopy_64.c

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in arch/x86/lib/usercopy_64.c.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in arch/x86/lib/usercopy_32.c
H. Peter Anvin [Mon, 4 Feb 2008 15:47:57 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in arch/x86/lib/usercopy_32.c

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in arch/x86/lib/usercopy_32.c.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in arch/x86/lib/mmx_32.c
H. Peter Anvin [Mon, 4 Feb 2008 15:47:57 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in arch/x86/lib/mmx_32.c

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in arch/x86/lib/mmx_32.c.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: use _ASM_EXTABLE macro in arch/x86/kernel/test_nx.c
H. Peter Anvin [Mon, 4 Feb 2008 15:47:56 +0000 (16:47 +0100)]
x86: use _ASM_EXTABLE macro in arch/x86/kernel/test_nx.c

Use the _ASM_EXTABLE macro from <asm/asm.h>, instead of open-coding
__ex_table entires in arch/x86/kernel/test_nx.c.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: add _ASM_EXTABLE macro to <asm/asm.h>
H. Peter Anvin [Mon, 4 Feb 2008 15:47:56 +0000 (16:47 +0100)]
x86: add _ASM_EXTABLE macro to <asm/asm.h>

Instead of open-coding the __ex_table information at each callsite,
construct a common macro that can work regardless of CPU size.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: define OBJCOPYFLAGS explicitly for each target.
Ian Campbell [Mon, 4 Feb 2008 15:47:56 +0000 (16:47 +0100)]
x86: define OBJCOPYFLAGS explicitly for each target.

Do this rather than defining a global version and overriding it in
almost all cases in order to make subsequent patches simpler.

Signed-off-by: Ian Campbell <ijc@hellion.org.uk>
Acked-by: H. Peter Anvin <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: reduce ifdef sections in fault.c
Harvey Harrison [Mon, 4 Feb 2008 15:47:56 +0000 (16:47 +0100)]
x86: reduce ifdef sections in fault.c

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: print out node_data addr and bootmap_start addr
Yinghai Lu [Mon, 4 Feb 2008 15:47:56 +0000 (16:47 +0100)]
x86: print out node_data addr and bootmap_start addr

print out node_data addr and bootmap_start addr.

helpful for debugging early crashes on high-end NUMA systems.

Signed-off-by: Yinghai Lu <yinghai.lu@sun.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: CPA remove bogus NX clear
Thomas Gleixner [Mon, 4 Feb 2008 15:47:55 +0000 (16:47 +0100)]
x86: CPA remove bogus NX clear

In split_large_page we clear the NX bit for the new split ptes, but we
need to preserve the original setting of it for the split ptes.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: mach-rdc321x Kconfig fix
Florian Fainelli [Mon, 4 Feb 2008 15:47:55 +0000 (16:47 +0100)]
x86: mach-rdc321x Kconfig fix

The mach-rdc321x uses the leds-gpio driver and explicitely
selects it, this driver also depends on the leds class module,
select it as well.

Signed-off-by: Florian Fainelli <florian.fainelli@telecomint.eu>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: rename module scx200_32 to scx200
Sam Ravnborg [Mon, 4 Feb 2008 15:47:55 +0000 (16:47 +0100)]
x86: rename module scx200_32 to scx200

The module scx200 were renamed to scx200_32 by the
merge of the 32 and 64 bit x86 arch trees.

Keep the _32 prefix on the .c file as it is 32 bit
specific and fix the module name in the Makefile.

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: restore correct module name for apm
Sam Ravnborg [Mon, 4 Feb 2008 15:47:55 +0000 (16:47 +0100)]
x86: restore correct module name for apm

The apm module were renamed to apm_32 during the merge of 32 and 64 bit
x86 which is unfortunate. As apm is 32 bit specific we like to keep the
_32 in the filename but the module should be named apm.

Fix this in the Makefile.

Reported-by: "A.E.Lawrence" <lawrence_a_e@ntlworld.com>
Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Cc: Cc: Ingo Molnar <mingo@elte.hu>
Cc: "H. Peter Anvin" <hpa@zytor.com>
Cc: "A.E.Lawrence" <lawrence_a_e@ntlworld.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agox86: VMI fix
Ingo Molnar [Mon, 4 Feb 2008 15:47:54 +0000 (16:47 +0100)]
x86: VMI fix

Jeff Chua bisected down a vmware guest boot breakage (hang) to
this paravirt change:

  commit 8d947344c47a40626730bb80d136d8daac9f2060
  Author: Glauber de Oliveira Costa <gcosta@redhat.com>
  Date:   Wed Jan 30 13:31:12 2008 +0100

    x86: change write_idt_entry signature

fix the off-by-one indexing bug ...

Bisected-by: Jeff Chua <jeff.chua.linux@gmail.com>
Tested-by: Jeff Chua <jeff.chua.linux@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
16 years agox86: relax RAM check in ioremap()
Ingo Molnar [Mon, 4 Feb 2008 15:47:54 +0000 (16:47 +0100)]
x86: relax RAM check in ioremap()

Kevin Winchester reported the loss of direct rendering, due to:

[    0.588184] agpgart: Detected AGP bridge 0
[    0.588184] agpgart: unable to get memory for graphics translation table.
[    0.588184] agpgart: agp_backend_initialize() failed.
[    0.588207] agpgart-amd64: probe of 0000:00:00.0 failed with error -12

and bisected it down to:

  commit 266b9f8727976769e2ed2dad77ac9295f37e321e
  Author: Thomas Gleixner <tglx@linutronix.de>
  Date:   Wed Jan 30 13:34:06 2008 +0100

      x86: fix ioremap RAM check

this check was too strict and caused an ioremap() failure.

the problem is due to the somewhat unclean way of how the GART code
reserves a memory range for its aperture, and how it utilizes it
later on.

Allow RAM pages to be ioremap()-ed too, as long as they are reserved.

Bisected-by: Kevin Winchester <kjwinchester@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Tested-by: Kevin Winchester <kjwinchester@gmail.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
16 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6
Linus Torvalds [Sat, 2 Feb 2008 20:58:57 +0000 (07:58 +1100)]
Merge git://git./linux/kernel/git/bart/ide-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6: (95 commits)
  ide-tape: remove idetape_config_t typedef
  ide-tape: remove mtio.h related comments
  ide-tape: make function name more accurate
  ide-tape: remove unused sense packet commands.
  ide-tape: use generic byteorder macros
  ide-tape: remove EXPERIMENTAL driver status
  ide-tape: use generic scsi commands
  ide-tape: remove struct idetape_block_size_page_t
  ide-tape: remove structs os_partition_t, os_dat_entry_t, os_dat_t
  ide-tape: remove struct idetape_parameter_block_descriptor_t
  ide-tape: remove struct idetape_medium_partition_page_t
  ide-tape: remove struct idetape_data_compression_page_t
  ide-tape: remove struct idetape_inquiry_result_t
  ide-tape: remove struct idetape_capabilities_page_t
  ide-tape: remove IDETAPE_DEBUG_BUGS
  ide-tape: remove IDETAPE_DEBUG_INFO
  ide-tape: dump gcw fields on error in idetape_identify_device()
  ide-tape: remove struct idetape_mode_parameter_header_t
  ide-tape: remove struct idetape_request_sense_result_t
  ide-tape: remove dead code
  ...

16 years agofix writev regression: pan hanging unkillable and un-straceable
Nick Piggin [Sat, 2 Feb 2008 14:01:17 +0000 (15:01 +0100)]
fix writev regression: pan hanging unkillable and un-straceable

Frederik Himpe reported an unkillable and un-straceable pan process.

Zero length iovecs can go into an infinite loop in writev, because the
iovec iterator does not always advance over them.

The sequence required to trigger this is not trivial. I think it
requires that a zero-length iovec be followed by a non-zero-length iovec
which causes a pagefault in the atomic usercopy. This causes the writev
code to drop back into single-segment copy mode, which then tries to
copy the 0 bytes of the zero-length iovec; a zero length copy looks like
a failure though, so it loops.

Put a test into iov_iter_advance to catch zero-length iovecs. We could
just put the test in the fallback path, but I feel it is more robust to
skip over zero-length iovecs throughout the code (iovec iterator may be
used in filesystems too, so it should be robust).

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
16 years agoMerge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394...
Linus Torvalds [Sat, 2 Feb 2008 20:51:38 +0000 (07:51 +1100)]
Merge branch 'for-linus' of git://git./linux/kernel/git/ieee1394/linux1394-2.6

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6:
  ieee1394: sbp2: fix bogus s/g access change

16 years agoide-tape: remove idetape_config_t typedef
Borislav Petkov [Sat, 2 Feb 2008 18:56:51 +0000 (19:56 +0100)]
ide-tape: remove idetape_config_t typedef

Since this is used only in idetape_blkdev_ioctl(), remove the typedef and make
the struct function-local.

Bart:
- s/sizeof(struct idetape_config)/sizeof(config)/

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove mtio.h related comments
Borislav Petkov [Sat, 2 Feb 2008 18:56:51 +0000 (19:56 +0100)]
ide-tape: remove mtio.h related comments

Those are already in mtio.h.

Bart:
- undo 'unsigned int/unsigned long' -> 'uint/ulong' conversion

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: make function name more accurate
Borislav Petkov [Sat, 2 Feb 2008 18:56:51 +0000 (19:56 +0100)]
ide-tape: make function name more accurate

idetape_active_next_stage() was rather ambiguous wrt its purpose. Make that
more explicit and remove superfluous comment.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove unused sense packet commands.
Borislav Petkov [Sat, 2 Feb 2008 18:56:51 +0000 (19:56 +0100)]
ide-tape: remove unused sense packet commands.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: use generic byteorder macros
Borislav Petkov [Sat, 2 Feb 2008 18:56:50 +0000 (19:56 +0100)]
ide-tape: use generic byteorder macros

This is not a network driver.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove EXPERIMENTAL driver status
Borislav Petkov [Sat, 2 Feb 2008 18:56:50 +0000 (19:56 +0100)]
ide-tape: remove EXPERIMENTAL driver status

ide-tape has depended on EXPERIMENTAL for ages. Change that since the driver is
being only maintained now.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: use generic scsi commands
Borislav Petkov [Sat, 2 Feb 2008 18:56:50 +0000 (19:56 +0100)]
ide-tape: use generic scsi commands

Also, remove those which weren't used.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove struct idetape_block_size_page_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:50 +0000 (19:56 +0100)]
ide-tape: remove struct idetape_block_size_page_t

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove structs os_partition_t, os_dat_entry_t, os_dat_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:50 +0000 (19:56 +0100)]
ide-tape: remove structs os_partition_t, os_dat_entry_t, os_dat_t

They seem just to sit there completely unused.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove struct idetape_parameter_block_descriptor_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:50 +0000 (19:56 +0100)]
ide-tape: remove struct idetape_parameter_block_descriptor_t

Also, shorten function name idetape_get_blocksize_from_block_descriptor() and
move its definition up thereby getting rid of its forward declaration.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove struct idetape_medium_partition_page_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:49 +0000 (19:56 +0100)]
ide-tape: remove struct idetape_medium_partition_page_t

There should be no functional changes resulting from this patch.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove struct idetape_data_compression_page_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:49 +0000 (19:56 +0100)]
ide-tape: remove struct idetape_data_compression_page_t

There should be no functional changes resulting from this patch.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove struct idetape_inquiry_result_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:49 +0000 (19:56 +0100)]
ide-tape: remove struct idetape_inquiry_result_t

There should be no functional changes resulting from this patch.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove struct idetape_capabilities_page_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:49 +0000 (19:56 +0100)]
ide-tape: remove struct idetape_capabilities_page_t

All those 2-byte values denoting the different capabilities are being written to
the local copy of the caps buffer without being converted to big endian for
simplicity of usage and shorter code later.  Also, we add some comments stating
which are the fields of the caps page in question in order to alleviate the
cryptic pointer casting exercises as in e.g. idetape_get_mode_sense_results().

There should be no functional changes resulting from this patch.

Bart:
- remove two needless "!!"

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove IDETAPE_DEBUG_BUGS
Borislav Petkov [Sat, 2 Feb 2008 18:56:49 +0000 (19:56 +0100)]
ide-tape: remove IDETAPE_DEBUG_BUGS

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove IDETAPE_DEBUG_INFO
Borislav Petkov [Sat, 2 Feb 2008 18:56:49 +0000 (19:56 +0100)]
ide-tape: remove IDETAPE_DEBUG_INFO

The device capabilities are probed for during device initialization so this
info is available through proc/ioctl() und it is redundant here.

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: dump gcw fields on error in idetape_identify_device()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:48 +0000 (19:56 +0100)]
ide-tape: dump gcw fields on error in idetape_identify_device()

Cc: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove struct idetape_mode_parameter_header_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:48 +0000 (19:56 +0100)]
ide-tape: remove struct idetape_mode_parameter_header_t

Bart:
- remove 'capabilities->speed' chunk
- re-add brackets to block_descrp assignment

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove struct idetape_request_sense_result_t
Borislav Petkov [Sat, 2 Feb 2008 18:56:48 +0000 (19:56 +0100)]
ide-tape: remove struct idetape_request_sense_result_t

Bart:
- remove unnecessary comment change
- remove two needless "!!"

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: remove dead code
Borislav Petkov [Sat, 2 Feb 2008 18:56:48 +0000 (19:56 +0100)]
ide-tape: remove dead code

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: move historical changelog to Documentation/ide/ChangeLog.ide-tape.1995...
Borislav Petkov [Sat, 2 Feb 2008 18:56:48 +0000 (19:56 +0100)]
ide-tape: move historical changelog to Documentation/ide/ChangeLog.ide-tape.1995-2002

Also, cleanup whitespace and update comments.

Bart:
- remove reference to drivers/block/ide.c
- move driver documentation to Documentation/ide/ide-tape.txt

Signed-off-by: Borislav Petkov <bbpetkov@yahoo.de>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-cs: use ide_std_init_ports()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:47 +0000 (19:56 +0100)]
ide-cs: use ide_std_init_ports()

No reason to use ide_init_hwif_ports() in ide-cs (as a nice side-effect
this makes ide-cs work on archs that don't define IDE_ARCH_OBSOLETE_INIT).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: move check_dma_crc() to ide-dma.c
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:47 +0000 (19:56 +0100)]
ide: move check_dma_crc() to ide-dma.c

* Move check_dma_crc() to ide-dma.c and add inline version for
  CONFIG_BLK_DEV_IDEDMA=n case.

* Rename check_dma_crc() to ide_check_dma_crc().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove ide_auto_reduce_xfer()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:47 +0000 (19:56 +0100)]
ide: remove ide_auto_reduce_xfer()

While at it:

* Remove needless '!drive->crc_count' check.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: move drive->crc_count check out from check_dma_crc()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:47 +0000 (19:56 +0100)]
ide: move drive->crc_count check out from check_dma_crc()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove ide_ata66_check()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:46 +0000 (19:56 +0100)]
ide: remove ide_ata66_check()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove set_transfer()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:46 +0000 (19:56 +0100)]
ide: remove set_transfer()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: unexport SELECT_DRIVE()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:46 +0000 (19:56 +0100)]
ide: unexport SELECT_DRIVE()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-scsi: remove needless SELECT_DRIVE() call
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:46 +0000 (19:56 +0100)]
ide-scsi: remove needless SELECT_DRIVE() call

SELECT_DRIVE() is called by IDE core code in start_request() before device
driver's ->do_request method.  In ide-scsi case ->do_request is implemented
by idescsi_do_request() which is also the only user of idescsi_issue_pc().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: use __ide_set_handler() in ide_execute_command()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:46 +0000 (19:56 +0100)]
ide: use __ide_set_handler() in ide_execute_command()

* Use __ide_set_handler() in ide_execute_command().

While at it:

* Fix whitespace damage in ide_execute_command().

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove SATA_*_REG macros
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:45 +0000 (19:56 +0100)]
ide: remove SATA_*_REG macros

* siimage.c: use hwif->sata_scr[SATA_{ERROR,STATUS}_OFFSET] instead of
  SATA_{ERROR,STATUS}_REG macros.

* Remove no longer needed SATA_*_REG macros.

While at it:

* Remove needless SATA Status register read from sil_sata_reset_poll().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove ->nice0 and ->nice2 fields from ide_drive_t
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:45 +0000 (19:56 +0100)]
ide: remove ->nice0 and ->nice2 fields from ide_drive_t

* ->nice0 and ->nice2 ide_drive_t fields are always zero so remove them.

* IDE_NICE_0 and IDE_NICE_2 defines from <linux/hdreg.h> are no longer
  used by any kernel code so cover them with #ifndef/#endif __KERNEL__.

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: convert ->straight8 field in ide_hwif_t to bit flag
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:45 +0000 (19:56 +0100)]
ide: convert ->straight8 field in ide_hwif_t to bit flag

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove unused ->auto_poll field from ide_hwif_t
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:45 +0000 (19:56 +0100)]
ide: remove unused ->auto_poll field from ide_hwif_t

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-probe: remove needless Status register reads
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:45 +0000 (19:56 +0100)]
ide-probe: remove needless Status register reads

* Cache value read from the Status register in 'stat' variable in do_probe()
  and enable_nest(), then remove remove needless Status register reads.

While at it:

* Add proper KERN_* levels to printk() calls.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-cris: use ide_execute_command()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:44 +0000 (19:56 +0100)]
ide-cris: use ide_execute_command()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agotrm290: use ide_execute_command()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:44 +0000 (19:56 +0100)]
trm290: use ide_execute_command()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-scsi: use ide_execute_command()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:44 +0000 (19:56 +0100)]
ide-scsi: use ide_execute_command()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-tape: use ide_execute_command()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:44 +0000 (19:56 +0100)]
ide-tape: use ide_execute_command()

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: move create_proc_ide_drives() call to ide_device_add_all()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:43 +0000 (19:56 +0100)]
ide: move create_proc_ide_drives() call to ide_device_add_all()

* Un-static create_proc_ide_drives() and call it from ide_device_add_all().

While at it:
* Rename create_proc_ide_drives() to ide_proc_port_register_devices().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: move hwif->present check out from ide_proc_register_port()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:43 +0000 (19:56 +0100)]
ide: move hwif->present check out from ide_proc_register_port()

Move hwif->present check out from ide_proc_register_port() to
ide_device_add_all().

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: factor out devices setup from ide_acpi_init()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:43 +0000 (19:56 +0100)]
ide: factor out devices setup from ide_acpi_init()

* Factor out devices setup from ide_acpi_init() to
  ide_acpi_port_init_devices().

* Call ide_acpi_port_init_devices() in ide_device_add_all().

While at it:
* Remove no longer needed 'drive' field from struct ide_acpi_drive_link.

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-acpi: remove dead code from do_drive_get_GTF()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:43 +0000 (19:56 +0100)]
ide-acpi: remove dead code from do_drive_get_GTF()

These pointers are always setup in ide_acpi_init().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide-acpi: remove needless exports
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:42 +0000 (19:56 +0100)]
ide-acpi: remove needless exports

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: move ide_acpi_init() call to ide_device_add_all()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:41 +0000 (19:56 +0100)]
ide: move ide_acpi_init() call to ide_device_add_all()

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: factor out devices setup from init_irq()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:41 +0000 (19:56 +0100)]
ide: factor out devices setup from init_irq()

* Factor out devices setup from init_irq() to ide_port_setup_devices().

While at it:
* Do devices setup after printing port information.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: factor out adding drive to hwgroup from init_irq()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:41 +0000 (19:56 +0100)]
ide: factor out adding drive to hwgroup from init_irq()

Factor out adding drive to hwgroup from init_irq() to
ide_add_drive_to_hwgroup().

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: move hwif->rqsize init from ide_init_queue() to init_irq()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:41 +0000 (19:56 +0100)]
ide: move hwif->rqsize init from ide_init_queue() to init_irq()

Move hwif->rqsize init from ide_init_queue() to init_irq().

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: merge init_gendisk() into hwif_register_devices()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:41 +0000 (19:56 +0100)]
ide: merge init_gendisk() into hwif_register_devices()

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: call init_gendisk() after ide_acpi_init()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:40 +0000 (19:56 +0100)]
ide: call init_gendisk() after ide_acpi_init()

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: move blk_register_region() call out from init_gendisk()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:40 +0000 (19:56 +0100)]
ide: move blk_register_region() call out from init_gendisk()

Move blk_register_region() call out from init_gendisk() to hwif_init().

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: skip not present devices in init_gendisk()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:40 +0000 (19:56 +0100)]
ide: skip not present devices in init_gendisk()

No need to initialize drive->gendev and waste memory on IDE settings
for not present devices.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove incorrect init_gendisk() comment
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:40 +0000 (19:56 +0100)]
ide: remove incorrect init_gendisk() comment

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: add ->port_init_devs method to ide_hwif_t
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:40 +0000 (19:56 +0100)]
ide: add ->port_init_devs method to ide_hwif_t

* Add ->port_init_devs method to ide_hwif_t for a host specific
  initialization of devices on a port.  Call the new method from
  ide_port_init_devices().

* Convert ht6560b, qd65xx and opti621 host drivers to use the new
  ->port_init_devs method.

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: add IDE_HFLAG_NO_{IO32_BIT,UNMASK_IRQS} host flags
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:40 +0000 (19:56 +0100)]
ide: add IDE_HFLAG_NO_{IO32_BIT,UNMASK_IRQS} host flags

* Use the same bit for IDE_HFLAG_CS5520 and IDE_HFLAG_VDMA host flags
  (both are used only by cs5520 host driver currently).

* Add IDE_HFLAG_NO_IO32_BIT host flag and use it instead of ->no_io_32bit
  ide_hwif_t field.

* Add IDE_HFLAG_NO_UNMASK_IRQS host flag, then convert dtc2278 and rz1000
  host drivers to use it.

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: factor out code initializing devices from ide_init_port()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:39 +0000 (19:56 +0100)]
ide: factor out code initializing devices from ide_init_port()

* Factor out code initializing devices from ide_init_port() to
  ide_port_init_devices().

* Call the new function from ide_device_add_all().

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: fix ide_unregister() usage in host drivers
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:39 +0000 (19:56 +0100)]
ide: fix ide_unregister() usage in host drivers

bast-ide.c/ide-cs.c/delkin_cb.c:

* Don't set 'restore' flag for ide_unregister() when initializing new
  interface.

rapide.c/ide-pnp.c/ide-cs.c/ide_platform.c/au1xxx-ide.c/delkin_cb.c/scc_pata.c:

* Don't set 'init_default' and 'restore' flags for ide_unregister() when
  removing interface.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: add ide_deprecated_find_port() helper
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:39 +0000 (19:56 +0100)]
ide: add ide_deprecated_find_port() helper

* Factor out code for finding ide_hwifs[] slot from ide_register_hw()
  to ide_deprecated_find_port().

* Convert bast-ide, ide-cs and delkin_cb host drivers to use ide_device_add()
  instead of ide_register_hw() (while at it drop doing "ide_unregister()" loop
  which tries to unregister _all_ IDE interfaces if useable ide_hwifs[] slot
  cannot be find).

This patch leaves us with only two ide_register_hw() users:
- drivers/macintosh/mediabay.c
- drivers/ide/ide.c

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: add 'init_default' and 'restore' arguments to ide_unregister()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:39 +0000 (19:56 +0100)]
ide: add 'init_default' and 'restore' arguments to ide_unregister()

* Add 'init_default' (flag for calling init_hwif_default()) and 'restore'
  (flag for calling ide_hwif_restore()) arguments to ide_unregister().

* Update ide_unregister() users to set 'init_default' and 'restore' flags.

* No need to set 'init_default' flag in ide_register_hw() if the setup done
  by init_hwif_default() is going to be overridden by ide_init_port_hw().

* No need to set 'init_default' and 'restore' flags in cleanup_module().

There should be no functionality changes caused by this patch.

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove redundant init_hwif_default() call from ide_register_hw()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:38 +0000 (19:56 +0100)]
ide: remove redundant init_hwif_default() call from ide_register_hw()

ide_init_port_hw() call overrides setup done by init_hwif_default().

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agoide: remove redundant hwif->present check from ide_register_hw()
Bartlomiej Zolnierkiewicz [Sat, 2 Feb 2008 18:56:38 +0000 (19:56 +0100)]
ide: remove redundant hwif->present check from ide_register_hw()

We check earlier for hwif->present and call ide_unregister() if necessary
(after ide_unregister() hwif->present will be always cleared).

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
16 years agopdc202xx_old: remove surplus initialiser
Alan Cox [Sat, 2 Feb 2008 18:56:38 +0000 (19:56 +0100)]
pdc202xx_old: remove surplus initialiser

Bart:
- drive-by CodingStyle fixups

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>