25 Feb, 2010

1 commit

• da64c2a8d   clocksource: Fix up a registration/IRQ race in the sh drivers. ... Browse Code »

  All of the SH clocksource drivers follow the scheme that the IRQ is setup
  prior to registering the clockevent. The interrupt handler in the
  clockevent cases looks to the event handler function pointer being filled
  in by the registration code, permitting us to get in to situations where
  asserted IRQs step in to the handler before registration has had a chance
  to complete and hitting a NULL pointer deref.

  In practice this is not an issue for most platforms, but some of them
  with fairly special loaders (or that are chain-loading from another
  kernel) may enter in to this situation. This fixes up the oops reported
  by Rafael on hp6xx.

  Reported-and-tested-by: Rafael Ignacio Zurita
  Cc: stable@kernel.org
  Signed-off-by: Paul Mundt

  Paul Mundt

  2010-02-25 15:37:46 +0800  

24 Jun, 2009

1 commit

• 6f4b67b8f   clocksource: sh_tmu: Make undefined TCOR behaviour less undefined. ... Browse Code »

  Avoid undocumented vague TMU behavior when zero value is set to TCOR.

  This primarily fixes up issues encountered under qemu with a zero-length
  period, while the hardware itself is fairly ambivalent one way or the
  other.

  Signed-off-by: Shin-ichiro KAWASAKI
  Acked-by: Magnus Damm
  Signed-off-by: Paul Mundt

  Shin-ichiro KAWASAKI

  2009-06-24 20:08:11 +0800  

17 Jun, 2009

1 commit

• be890a1a9   sh: turn off irqs when disabling CMT/TMU timers ... Browse Code »

  Modify the CMT and TMU drivers to disable interrupts when
  disabling the timer. Only using start/stop bits is not
  enough.

  This fixes a bootup hang on Migo-R when the CMT is replaced
  by TMU for clockevents but the CMT keeps on delivering irqs
  even though the timer start bit is off.

  Signed-off-by: Magnus Damm
  Signed-off-by: Paul Mundt

  Magnus Damm

  2009-06-17 14:39:56 +0800  

14 Jun, 2009

1 commit

• e7fad451f   clocksource: Drop unused irqaction.mask from SH drivers. ... Browse Code »

  The irqaction.mask is legacy code that is wholly unused and going away,
  so simply drop its use in the SH drivers completely.

  Fixes up build failures in -next.

  Signed-off-by: Paul Mundt

  Paul Mundt

  2009-06-14 20:18:24 +0800  

03 May, 2009

2 commits

• 46a12f742   sh: Consolidate MTU2/CMT/TMU timer platform data. ... Browse Code »

  All of the SH timers use a roughly identical structure for platform data,
  which presently is broken out for each block. Consolidate all of these
  definitions, as there is no reason for them to be broken out in the first
  place.

  Signed-off-by: Paul Mundt

  Paul Mundt

  2009-05-03 16:57:17 +0800  
• 9570ef204   clocksource: SuperH TMU Timer driver ... Browse Code »

  This patch adds a TMU driver for the SuperH architecture.

  The TMU driver is a platform driver with early platform
  support to allow using a TMU channel as clockevent or
  clocksource during system bootup or later.

  Clocksource or clockevent can be selected.
  Both periodic and oneshot clockevents are supported.

  Signed-off-by: Magnus Damm
  Signed-off-by: Paul Mundt

  Magnus Damm

  2009-05-03 16:41:15 +0800