Doug / smarc-fsl-linux-kernel

18 Oct, 2010

1 commit

  • 631dd1a88   Update broken web addresses in the kernel. ... Browse Code »

    The patch below updates broken web addresses in the kernel

    Signed-off-by: Justin P. Mattock
    Cc: Maciej W. Rozycki
    Cc: Geert Uytterhoeven
    Cc: Finn Thain
    Cc: Randy Dunlap
    Cc: Matt Turner
    Cc: Dimitry Torokhov
    Cc: Mike Frysinger
    Acked-by: Ben Pfaff
    Acked-by: Hans J. Koch
    Reviewed-by: Finn Thain
    Signed-off-by: Jiri Kosina

    Justin P. Mattock
     

25 May, 2010

1 commit

  • bd9b5caf8   fbdev: section cleanup in arcfb ... Browse Code »

    Fix the sections in the arcfb driver, by moving:

    * the variables arcfb_fix and arcfb_var from .init.data to .devinit.data

    * arcfb_remove() from .text to .devexit.text

    This fixes the following warnings issued by modpost:

    WARNING: drivers/video/built-in.o(.devinit.text+0x543): Section mismatch in reference from the function arcfb_probe() to the variable .init.data:arcfb_var
    The function __devinit arcfb_probe() references
    a variable __initdata arcfb_var.
    If arcfb_var is only used by arcfb_probe then
    annotate arcfb_var with a matching annotation.

    WARNING: drivers/video/built-in.o(.devinit.text+0x558): Section mismatch in reference from the function arcfb_probe() to the variable .init.data:arcfb_fix
    The function __devinit arcfb_probe() references
    a variable __initdata arcfb_fix.
    If arcfb_fix is only used by arcfb_probe then
    annotate arcfb_fix with a matching annotation.

    Signed-off-by: Henrik Kretzschmar
    Acked-by: Uwe Kleine-König
    Cc: [if "platform-drivers: move probe to .devinit.text in drivers/video" was merged]
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Henrik Kretzschmar
     

30 Mar, 2010

1 commit

  • 5a0e3ad6a   include cleanup: Update gfp.h and slab.h includes to prepare for breaking implic… ... Browse Code »

    …it slab.h inclusion from percpu.h

    percpu.h is included by sched.h and module.h and thus ends up being
    included when building most .c files. percpu.h includes slab.h which
    in turn includes gfp.h making everything defined by the two files
    universally available and complicating inclusion dependencies.

    percpu.h -> slab.h dependency is about to be removed. Prepare for
    this change by updating users of gfp and slab facilities include those
    headers directly instead of assuming availability. As this conversion
    needs to touch large number of source files, the following script is
    used as the basis of conversion.

    http://userweb.kernel.org/~tj/misc/slabh-sweep.py

    The script does the followings.

    * Scan files for gfp and slab usages and update includes such that
    only the necessary includes are there. ie. if only gfp is used,
    gfp.h, if slab is used, slab.h.

    * When the script inserts a new include, it looks at the include
    blocks and try to put the new include such that its order conforms
    to its surrounding. It's put in the include block which contains
    core kernel includes, in the same order that the rest are ordered -
    alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
    doesn't seem to be any matching order.

    * If the script can't find a place to put a new include (mostly
    because the file doesn't have fitting include block), it prints out
    an error message indicating which .h file needs to be added to the
    file.

    The conversion was done in the following steps.

    1. The initial automatic conversion of all .c files updated slightly
    over 4000 files, deleting around 700 includes and adding ~480 gfp.h
    and ~3000 slab.h inclusions. The script emitted errors for ~400
    files.

    2. Each error was manually checked. Some didn't need the inclusion,
    some needed manual addition while adding it to implementation .h or
    embedding .c file was more appropriate for others. This step added
    inclusions to around 150 files.

    3. The script was run again and the output was compared to the edits
    from #2 to make sure no file was left behind.

    4. Several build tests were done and a couple of problems were fixed.
    e.g. lib/decompress_*.c used malloc/free() wrappers around slab
    APIs requiring slab.h to be added manually.

    5. The script was run on all .h files but without automatically
    editing them as sprinkling gfp.h and slab.h inclusions around .h
    files could easily lead to inclusion dependency hell. Most gfp.h
    inclusion directives were ignored as stuff from gfp.h was usually
    wildly available and often used in preprocessor macros. Each
    slab.h inclusion directive was examined and added manually as
    necessary.

    6. percpu.h was updated not to include slab.h.

    7. Build test were done on the following configurations and failures
    were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
    distributed build env didn't work with gcov compiles) and a few
    more options had to be turned off depending on archs to make things
    build (like ipr on powerpc/64 which failed due to missing writeq).

    * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
    * powerpc and powerpc64 SMP allmodconfig
    * sparc and sparc64 SMP allmodconfig
    * ia64 SMP allmodconfig
    * s390 SMP allmodconfig
    * alpha SMP allmodconfig
    * um on x86_64 SMP allmodconfig

    8. percpu.h modifications were reverted so that it could be applied as
    a separate patch and serve as bisection point.

    Given the fact that I had only a couple of failures from tests on step
    6, I'm fairly confident about the coverage of this conversion patch.
    If there is a breakage, it's likely to be something in one of the arch
    headers which should be easily discoverable easily on most builds of
    the specific arch.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

08 Mar, 2010

1 commit

  • c2e13037e   platform-drivers: move probe to .devinit.text in drivers/video ... Browse Code »

    A pointer to a probe callback is passed to the core via
    platform_driver_register and so the function must not disappear when the
    .init sections are discarded. Otherwise (if also having HOTPLUG=y)
    unbinding and binding a device to the driver via sysfs will result in an
    oops as does a device being registered late.

    An alternative to this patch is using platform_driver_probe instead of
    platform_driver_register plus removing the pointer to the probe function
    from the struct platform_driver.

    Signed-off-by: Uwe Kleine-König
    Cc: Adrian Bunk
    Cc: Alberto Mardegan
    Cc: Andrew Morton
    Cc: Andriy Skulysh
    Cc: Antonino Daplas
    Cc: Anton Vorontsov
    Cc: Ben Dooks
    Cc: Chandramouli Narayanan
    Cc: Christoph Hellwig
    Cc: Frans Pop
    Cc: Geert Uytterhoeven
    Cc: Greg Kroah-Hartman
    Cc: Helge Deller
    Cc: Huang Ying
    Cc: Ian Molton
    Cc: Joshua Kinard
    Cc: Kaj-Michael Lang
    Cc: Krzysztof Helt
    Cc: linux-fbdev-devel@lists.sourceforge.net
    Cc: Maciej W. Rozycki
    Cc: Magnus Damm
    Cc: Martin Michlmayr
    Cc: Matthias Kaehlcke
    Cc: Paul Mundt
    Cc: Pavel Machek
    Cc: Philipp Zabel
    Cc: Richard Purdie
    Cc: Roel Kluin
    Cc: Roland Stigge
    Cc: Russell King
    Cc: Thomas Bogendoerfer
    Cc: Vincent Sanders
    Cc: Yoichi Yuasa
    Acked-by: Ralf Baechle
    Acked-by: Arnaud Patard
    Acked-by: James Simmons
    Acked-by: Peter Jones
    Acked-by: Jaya Kumar
    Signed-off-by: Greg Kroah-Hartman

    Uwe Kleine-König
     

17 Oct, 2007

1 commit

09 May, 2007

4 commits

09 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
     

11 Jul, 2006

1 commit

  • a8f340e39   [PATCH] vt: Remove VT-specific declarations and definitions from tty.h ... Browse Code »

    MAX_NR_CONSOLES, fg_console, want_console and last_console are more of a
    function of the VT layer than the TTY one. Moving these to vt.h and vt_kern.h
    allows all of the framebuffer and VT console drivers to remove their
    dependency on tty.h.

    [akpm@osdl.org: fix alpha build]
    Signed-off-by: Jon Smirl
    Signed-off-by: Antonino Daplas
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jon Smirl
     

03 Jul, 2006

1 commit

12 Mar, 2006

2 commits

15 Jan, 2006

1 commit

11 Jan, 2006

1 commit

  • a0aa7d063   [PATCH] drivers/video/: possible cleanups ... Browse Code »

    This patch contains the possible cleanups including the following:
    - every file should #include the headers containing the prototypes for
    it's global functions
    - make needlessly global functions static
    - kyro/STG4000Interface.h: #include video/kyro.h and linux/pci.h
    instead of a manual "struct pci_dev"
    - i810_main.{c,h}: prototypes for static functions belong to the
    C file

    Signed-off-by: Adrian Bunk
    Acked-by: "Antonino A. Daplas"
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Adrian Bunk
     

16 Dec, 2005

1 commit

10 Nov, 2005

1 commit

07 Nov, 2005

1 commit

  • c465e05a0   [PATCH] fbcon/fbdev: Move softcursor out of fbdev to fbcon ... Browse Code »

    According to Jon Smirl, filling in the field fb_cursor with soft_cursor for
    drivers that do not support hardware cursors is redundant. The soft_cursor
    function is usable by all drivers because it is just a wrapper around
    fb_imageblit. And because soft_cursor is an fbcon-specific hook, the file is
    moved to the console directory.

    Thus, drivers that do not support hardware cursors can leave the fb_cursor
    field blank. For drivers that do, they can fill up this field with their own
    version.

    The end result is a smaller code size. And if the framebuffer console is not
    loaded, module/kernel size is also reduced because the soft_cursor module will
    also not be loaded.

    Signed-off-by: Antonino Daplas
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Antonino A. Daplas
     

06 Nov, 2005

1 commit

  • 8d972a962   [DRIVER MODEL] Fix arcfb ... Browse Code »

    Release code in driver modules is a potential cause of oopsen.
    The device may be in use by a userspace process, which will keep
    a reference to the device. If the module is unloaded, the module
    text will be freed. Subsequently, when the last reference is
    dropped, the release code will be called, which no longer exists.

    Use generic platform device allocation/release code in modules.

    Signed-off-by: Russell King
    Acked-by: Greg Kroah-Hartman

    Russell King
     

30 Oct, 2005

1 commit

22 Jun, 2005

1 commit

  • 1154ea7dc   [PATCH] Framebuffer driver for Arc LCD board ... Browse Code »

    Add support for the Arc monochrome LCD board.

    The board uses KS108 controllers to drive individual 64x64 LCD matrices.
    The board can be paneled in a variety of setups such as 2x1=128x64,
    4x4=256x256 and so on. The board/host interface is through GPIO.

    Signed-off-by: Jaya Kumar
    Cc: "Antonino A. Daplas"
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jaya Kumar