10 Jun, 2011

1 commit


04 Feb, 2011

1 commit

  • Some rtc drivers use the ioctl method instead of the alarm_irq_enable
    method for enabling alarm interupts. With the new virtualized RTC
    rework, its important for drivers to use the alarm_irq_enable instead.

    This patch converts the drivers that use the AIE ioctl method to
    use the alarm_irq_enable method. Other ioctl cmds are left untouched.

    I have not been able to test or even compile most of these drivers.
    Any help to make sure this change is correct would be appreciated!

    CC: Alessandro Zummo
    CC: Thomas Gleixner
    CC: Marcelo Roberto Jimenez
    Reported-by: Marcelo Roberto Jimenez
    Tested-by: Marcelo Roberto Jimenez
    Signed-off-by: John Stultz

    John Stultz
     

30 Mar, 2010

1 commit

  • …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
     

16 Dec, 2009

1 commit

  • Herton Ronaldo Krzesinski recently raised up, and fixed, an issue with the
    rtc_cmos driver, which was referring to an inconsistent driver data.

    This patch ensures that driver data registration happens before
    rtc_device_register().

    Signed-off-by: Alessandro Zummo
    Acked-by: Thomas Hommel
    Acked-by: Hans-Christian Egtvedt
    Acked-by: Paul Mundt
    Cc: David S. Miller
    Cc: Thomas Bogendoerfer
    Cc: Andrew Sharp
    Cc: Atsushi Nemoto
    Cc: Alexander Bigga
    Cc: Thomas Bogendoerfer
    Cc: Mark Zhan
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alessandro Zummo
     

07 Jan, 2009

1 commit

  • This patch fixes a bunch of irq checking misuses. Most drivers were
    getting irq via platform_get_irq(), which returns -ENXIO or r->start.

    rtc-cmos.c is special. It is using PNP and platform bindings. Hopefully
    nobody is using PNP IRQ 0 for RTC. So the changes should be safe.

    rtc-sh.c is using platform_get_irq, but was storing a result into an
    unsigned type, then was checking for < 0. This is fixed now.

    Signed-off-by: Anton Vorontsov
    Cc: Alessandro Zummo
    Acked-by: David Brownell
    Acked-by: Paul Mundt
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Anton Vorontsov
     

02 Jul, 2008

1 commit


13 Jun, 2008

1 commit

  • alarm->pending indicates whether there's an alarm that has actually been
    triggered, not whether we're waiting for it. alarm->enabled indicates
    that.

    Also add missing locking around reading the RTC registers.

    Signed-off-by: Haavard Skinnemoen
    Signed-off-by: Alessandro Zummo
    Cc: Hans-Christian Egtvedt
    Cc: David Brownell
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Haavard Skinnemoen
     

11 Apr, 2008

1 commit

  • Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
    prefixed with "platform:". Add MODULE_ALIAS() to the hotpluggable RTC
    platform drivers, to re-enable module auto loading.

    [dbrownell@users.sourceforge.net: more drivers, minor fix]
    Signed-off-by: Kay Sievers
    Signed-off-by: David Brownell
    Cc: Greg KH
    Cc: Alessandro Zummo
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Kay Sievers
     

18 Dec, 2007

1 commit

  • Reorder at32_rtc_probe() so that it's safe (no oopsing) to fire the
    IRQ handler the instant that it's registered. (Bug noted via "Debug
    shared IRQ handlers" kernel debug option.)

    Signed-off-by: David Brownell
    Cc: Alessandro Zummo
    Cc:
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    David Brownell
     

18 Jul, 2007

1 commit

  • Tested on the AT32AP7000/ATSTK1000. Driver does only suport time, wake up
    and a very simple alarm, because of hardware limitations.

    Hardware documentation can be found in the AT32AP7000 data sheet, which can
    be downloaded from

    http://www.atmel.com/dyn/products/datasheets.asp?family_id=682

    From: David Brownell

    - Strike some alarm setup code that's no longer needed.
    (This patch seems to have gotten lost somewhere...)

    - Make the driver name (and its module alias) match what
    the platform setup code uses, so the driver can bind
    and hotplug.

    [akpm@linux-foundation.org: fix several checkpatch.pl warnings]
    Signed-off-by: Hans-Christian Egtvedt
    Signed-off-by: Haavard Skinnemoen
    Cc: Alessandro Zummo
    Signed-off-by: David Brownell
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Hans-Christian Egtvedt