Eric Lee / smarc-fsl-linux-kernel

23 Sep, 2009

1 commit

08 Jan, 2009

1 commit

  • 011b15df4   USB: change interface to usb_lock_device_for_reset() ... Browse Code »

    This patch (as1161) changes the interface to
    usb_lock_device_for_reset(). The existing interface is apparently not
    very clear, judging from the fact that several of its callers don't
    use it correctly. The new interface always returns 0 for success and
    it always requires the caller to unlock the device afterward.

    The new routine will not return immediately if it is called while the
    driver's probe method is running. Instead it will wait until the
    probe is over and the device has been unlocked. This shouldn't cause
    any problems; I don't know of any cases where drivers call
    usb_lock_device_for_reset() during probe.

    Signed-off-by: Alan Stern
    Cc: Pete Zaitcev
    Signed-off-by: Greg Kroah-Hartman

    Alan Stern
     

25 Apr, 2008

2 commits

29 Nov, 2007

1 commit

23 Oct, 2007

1 commit

13 Oct, 2007

1 commit

20 Jul, 2007

1 commit

09 May, 2007

1 commit

15 Feb, 2007

1 commit

  • cd354f1ae   [PATCH] remove many unneeded #includes of sched.h ... Browse Code »

    After Al Viro (finally) succeeded in removing the sched.h #include in module.h
    recently, it makes sense again to remove other superfluous sched.h includes.
    There are quite a lot of files which include it but don't actually need
    anything defined in there. Presumably these includes were once needed for
    macros that used to live in sched.h, but moved to other header files in the
    course of cleaning it up.

    To ease the pain, this time I did not fiddle with any header files and only
    removed #includes from .c-files, which tend to cause less trouble.

    Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
    arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
    allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
    configs in arch/arm/configs on arm. I also checked that no new warnings were
    introduced by the patch (actually, some warnings are removed that were emitted
    by unnecessarily included header files).

    Signed-off-by: Tim Schmielau
    Acked-by: Russell King
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Tim Schmielau
     

02 Dec, 2006

1 commit

05 Oct, 2006

1 commit

  • 7d12e780e   IRQ: Maintain regs pointer globally rather than passing to IRQ handlers ... Browse Code »

    Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
    of passing regs around manually through all ~1800 interrupt handlers in the
    Linux kernel.

    The regs pointer is used in few places, but it potentially costs both stack
    space and code to pass it around. On the FRV arch, removing the regs parameter
    from all the genirq function results in a 20% speed up of the IRQ exit path
    (ie: from leaving timer_interrupt() to leaving do_IRQ()).

    Where appropriate, an arch may override the generic storage facility and do
    something different with the variable. On FRV, for instance, the address is
    maintained in GR28 at all times inside the kernel as part of general exception
    handling.

    Having looked over the code, it appears that the parameter may be handed down
    through up to twenty or so layers of functions. Consider a USB character
    device attached to a USB hub, attached to a USB controller that posts its
    interrupts through a cascaded auxiliary interrupt controller. A character
    device driver may want to pass regs to the sysrq handler through the input
    layer which adds another few layers of parameter passing.

    I've build this code with allyesconfig for x86_64 and i386. I've runtested the
    main part of the code on FRV and i386, though I can't test most of the drivers.
    I've also done partial conversion for powerpc and MIPS - these at least compile
    with minimal configurations.

    This will affect all archs. Mostly the changes should be relatively easy.
    Take do_IRQ(), store the regs pointer at the beginning, saving the old one:

    struct pt_regs *old_regs = set_irq_regs(regs);

    And put the old one back at the end:

    set_irq_regs(old_regs);

    Don't pass regs through to generic_handle_irq() or __do_IRQ().

    In timer_interrupt(), this sort of change will be necessary:

    - update_process_times(user_mode(regs));
    - profile_tick(CPU_PROFILING, regs);
    + update_process_times(user_mode(get_irq_regs()));
    + profile_tick(CPU_PROFILING);

    I'd like to move update_process_times()'s use of get_irq_regs() into itself,
    except that i386, alone of the archs, uses something other than user_mode().

    Some notes on the interrupt handling in the drivers:

    (*) input_dev() is now gone entirely. The regs pointer is no longer stored in
    the input_dev struct.

    (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does
    something different depending on whether it's been supplied with a regs
    pointer or not.

    (*) Various IRQ handler function pointers have been moved to type
    irq_handler_t.

    Signed-Off-By: David Howells
    (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

    David Howells
     

29 Sep, 2006

1 commit

06 Jun, 2006

1 commit

  • 5d5ff44fe   [SCSI] fix up request buffer reference in various scsi drivers ... Browse Code »

    Various scsi drivers use scsi_cmnd.buffer and scsi_cmnd.bufflen in their
    queuecommand functions. Those fields are internal storage for the
    midlayer only and are used to restore the original payload after
    request_buffer and request_bufflen have been overwritten for EH. Using
    the buffer and bufflen fields means they do very broken things in error
    handling.

    Signed-off-by: Christoph Hellwig
    Signed-off-by: James Bottomley

    Christoph Hellwig
     

24 Mar, 2006

1 commit

11 Jan, 2006

1 commit

  • 3c6bee1d4   [PATCH] turn "const static" into "static const" ... Browse Code »

    ICC likes to complain about storage class not being first, GCC doesn't
    care much (except for cases like "inline static").
    have a hard time seeing how it could break anything.

    Thanks to Gabriel A. Devenyi for pointing out
    http://linuxicc.sourceforge.net/ which is what made me create this patch.

    Signed-off-by: Jesper Juhl
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jesper Juhl
     

05 Jan, 2006

1 commit

18 Nov, 2005

1 commit

10 Nov, 2005

1 commit

29 Oct, 2005

1 commit

28 Jul, 2005

1 commit

  • 77933d727   [PATCH] clean up inline static vs static inline ... Browse Code »

    `gcc -W' likes to complain if the static keyword is not at the beginning of
    the declaration. This patch fixes all remaining occurrences of "inline
    static" up with "static inline" in the entire kernel tree (140 occurrences in
    47 files).

    While making this change I came across a few lines with trailing whitespace
    that I also fixed up, I have also added or removed a blank line or two here
    and there, but there are no functional changes in the patch.

    Signed-off-by: Jesper Juhl
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jesper Juhl
     

23 Apr, 2005

1 commit

19 Apr, 2005

1 commit

  • 2bc474c36   [PATCH] kill old EH constants ... Browse Code »

    Fix up two drivers that incorrectly were using the old return values for
    their new-style EH methods and kill off scsi_obsolete.h that defined the
    constants. The initio driver has all these constansts defined locally
    and uses them internally, I'll fix that up some time later.

    Signed-off-by: James Bottomley

     

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    Initial git repository build. I'm not bothering with the full history,
    even though we have it. We can create a separate "historical" git
    archive of that later if we want to, and in the meantime it's about
    3.2GB when imported into git - space that would just make the early
    git days unnecessarily complicated, when we don't have a lot of good
    infrastructure for it.

    Let it rip!

    Linus Torvalds