diff options
| author | Thomas Taranowski <tom@baringforge.com> | 2011-01-13 04:00:44 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2011-01-13 19:03:18 +0300 |
| commit | 12a4dc43911785f51a596f771ae0701b18d436f1 (patch) | |
| tree | 3f518b15c2f2953e8c5967b4b17e85a20460a296 /arch/powerpc/platforms/pasemi | |
| parent | 2e9d4d84847b5b05c8a049b681f15906a91e0f78 (diff) | |
| download | linux-12a4dc43911785f51a596f771ae0701b18d436f1.tar.xz | |
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>
Diffstat (limited to 'arch/powerpc/platforms/pasemi')
0 files changed, 0 insertions, 0 deletions