Doug / smarc-fsl-linux-kernel

19 Mar, 2013

1 commit

28 Sep, 2012

1 commit

29 Mar, 2012

2 commits

  • 0195c0024   Merge tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/sc… ... Browse Code »

    …m/linux/kernel/git/dhowells/linux-asm_system

    Pull "Disintegrate and delete asm/system.h" from David Howells:
    "Here are a bunch of patches to disintegrate asm/system.h into a set of
    separate bits to relieve the problem of circular inclusion
    dependencies.

    I've built all the working defconfigs from all the arches that I can
    and made sure that they don't break.

    The reason for these patches is that I recently encountered a circular
    dependency problem that came about when I produced some patches to
    optimise get_order() by rewriting it to use ilog2().

    This uses bitops - and on the SH arch asm/bitops.h drags in
    asm-generic/get_order.h by a circuituous route involving asm/system.h.

    The main difficulty seems to be asm/system.h. It holds a number of
    low level bits with no/few dependencies that are commonly used (eg.
    memory barriers) and a number of bits with more dependencies that
    aren't used in many places (eg. switch_to()).

    These patches break asm/system.h up into the following core pieces:

    (1) asm/barrier.h

    Move memory barriers here. This already done for MIPS and Alpha.

    (2) asm/switch_to.h

    Move switch_to() and related stuff here.

    (3) asm/exec.h

    Move arch_align_stack() here. Other process execution related bits
    could perhaps go here from asm/processor.h.

    (4) asm/cmpxchg.h

    Move xchg() and cmpxchg() here as they're full word atomic ops and
    frequently used by atomic_xchg() and atomic_cmpxchg().

    (5) asm/bug.h

    Move die() and related bits.

    (6) asm/auxvec.h

    Move AT_VECTOR_SIZE_ARCH here.

    Other arch headers are created as needed on a per-arch basis."

    Fixed up some conflicts from other header file cleanups and moving code
    around that has happened in the meantime, so David's testing is somewhat
    weakened by that. We'll find out anything that got broken and fix it..

    * tag 'split-asm_system_h-for-linus-20120328' of git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-asm_system: (38 commits)
    Delete all instances of asm/system.h
    Remove all #inclusions of asm/system.h
    Add #includes needed to permit the removal of asm/system.h
    Move all declarations of free_initmem() to linux/mm.h
    Disintegrate asm/system.h for OpenRISC
    Split arch_align_stack() out from asm-generic/system.h
    Split the switch_to() wrapper out of asm-generic/system.h
    Move the asm-generic/system.h xchg() implementation to asm-generic/cmpxchg.h
    Create asm-generic/barrier.h
    Make asm-generic/cmpxchg.h #include asm-generic/cmpxchg-local.h
    Disintegrate asm/system.h for Xtensa
    Disintegrate asm/system.h for Unicore32 [based on ver #3, changed by gxt]
    Disintegrate asm/system.h for Tile
    Disintegrate asm/system.h for Sparc
    Disintegrate asm/system.h for SH
    Disintegrate asm/system.h for Score
    Disintegrate asm/system.h for S390
    Disintegrate asm/system.h for PowerPC
    Disintegrate asm/system.h for PA-RISC
    Disintegrate asm/system.h for MN10300
    ...

    Linus Torvalds
     
  • 9ffc93f20   Remove all #inclusions of asm/system.h ... Browse Code »

    Remove all #inclusions of asm/system.h preparatory to splitting and killing
    it. Performed with the following command:

    perl -p -i -e 's!^#\s*include\s*.*\n!!' `grep -Irl '^#\s*include\s*' *`

    Signed-off-by: David Howells

    David Howells
     

20 Mar, 2012

1 commit

  • ff732d281   [media] media: Initialize the media core with subsys_initcall() ... Browse Code »

    Media-related drivers living outside drivers/media/ (such as the UVC
    gadget driver in drivers/usb/gadget/) rely on the media core being
    initialized before they're probed. As drivers/usb/ is linked before
    drivers/media/, this is currently not the case and will lead to crashes
    if the drivers are not compiled as modules.

    Register media_devnode_init() as a subsys_initcall() instead of
    module_init() to fix this.

    Signed-off-by: Laurent Pinchart
    Acked-by: Bhupesh Sharma
    Acked-by: Sakari Ailus
    Tested-by: Sakari Ailus
    Signed-off-by: Mauro Carvalho Chehab

    Laurent Pinchart
     

02 Jun, 2011

1 commit

  • 8c89ddd53   [media] media: Fix media device minor registration ... Browse Code »

    The find_next_zero_bit() is called with the from and to arguments in the
    wrong order. This results in the function always returning 0, and all
    media devices being registered with minor 0. Furthermore, mdev->minor is
    then used before being assigned with the find_next_zero_bit() return
    value. This really makes sure we'll always use minor 0.

    Fix this and let the system support more than one media device.

    Signed-off-by: Laurent Pinchart
    Cc: stable@kernel.org
    Signed-off-by: Mauro Carvalho Chehab

    Laurent Pinchart
     

22 Mar, 2011

1 commit

  • cf4b9211b   [media] media: Media device node support ... Browse Code »

    The media_devnode structure provides support for registering and
    unregistering character devices using a dynamic major number. Reference
    counting is handled internally, making device drivers easier to write
    without having to solve the open/disconnect race condition issue over
    and over again.

    The code is based on video/v4l2-dev.c.

    [mchehab@redhat.com: Remove linux/smp_lock.h include to not break compilation on bisect]
    Signed-off-by: Laurent Pinchart
    Acked-by: Hans Verkuil
    Signed-off-by: Mauro Carvalho Chehab

    Laurent Pinchart