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Thomas Taranowski 12a4dc4391 rapidio: fix hang on RapidIO doorbell queue full condition
In fsl_rio_dbell_handler() the code currently simply acknowledges the QFI
queue full interrupt, but does nothing to resolve the queue full
condition.  Instead, it jumps to the end of the isr.  When a queue full
condition occurs, the isr is then re-entered immediately and continually,
forever.

The fix is to just fall through and read out current doorbell entries.

Signed-off-by: Thomas Taranowski <tom@baringforge.com>
Cc: Alexandre Bounine <alexandre.bounine@idt.com>
Cc: Kumar Gala <galak@kernel.crashing.org>
Cc: Matt Porter <mporter@kernel.crashing.org>
Cc: Li Yang <leoli@freescale.com>
Cc: Thomas Moll <thomas.moll@sysgo.com>
Cc: Micha Nelissen <micha@neli.hopto.org>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2011-01-13 08:03:18 -08:00
..
boot Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-01-11 16:31:41 -08:00
configs powerpc/4xx: Add Canyonlands suspend and idle support 2010-11-29 10:05:24 -05:00
include/asm Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-01-11 16:31:41 -08:00
kernel Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-01-11 16:31:41 -08:00
kvm KVM: PPC: BookE: Load the lower half of MSR 2010-11-05 14:42:29 -02:00
lib powerpc: Hardcode popcnt instructions for old assemblers 2010-12-09 15:35:30 +11:00
math-emu powerpc/Makefiles: Change to new flag variables 2010-10-13 16:19:22 +11:00
mm powerpc/pseries: Fix build of topology stuff without CONFIG_NUMA 2011-01-12 10:56:29 +11:00
oprofile oprofile/fsl emb: Don't set MSR[PMM] until after clearing the interrupt. 2010-10-14 00:53:05 -05:00
platforms Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-01-11 16:31:41 -08:00
sysdev rapidio: fix hang on RapidIO doorbell queue full condition 2011-01-13 08:03:18 -08:00
xmon powerpc/Makefiles: Change to new flag variables 2010-10-13 16:19:22 +11:00
Kconfig Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2011-01-11 16:31:41 -08:00
Kconfig.debug powerpc: Unconditionally enabled irq stacks 2010-06-15 15:02:37 +10:00
Makefile powerpc: Fix typo in uImage target 2010-08-24 15:26:32 +10:00
relocs_check.pl powerpc: Check for unsupported relocs when using CONFIG_RELOCATABLE 2009-09-24 15:31:40 +10:00