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ed8b0d67f3
linux/drivers/dma
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Nicolas Ferre ed8b0d67f3 dmaengine: at_hdmac: remove clear-on-read in atc_dostart() 
This loop on EBCISR register was designed to clear IRQ sources before enabling
a DMA channel. This register is clear-on-read so a race condition can appear if
another channel is already active and has just finished its transfer.
Removing this read on EBCISR is fixing the issue as there is no case where an IRQ
could be pending: we already make sure that this register is drained at probe()
time and during resume.

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
2012-04-20 15:38:05 +05:30
..
ioat dmaengine: fix for cookie changes and merge 2012-03-13 11:58:12 +05:30
ipu dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
ppc4xx dmaengine: ensure all DMA engine drivers initialize their cookies 2012-03-13 11:37:42 +05:30
amba-pl08x.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: add slave config operation 2012-03-21 21:12:29 +05:30
at_hdmac.c dmaengine: at_hdmac: remove clear-on-read in atc_dostart() 2012-04-20 15:38:05 +05:30
coh901318_lli.c dmaengine: move drivers to dma_transfer_direction 2011-10-27 20:53:43 +05:30
coh901318_lli.h dmaengine: move drivers to dma_transfer_direction 2011-10-27 20:53:43 +05:30
coh901318.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
dmaengine.c dma: dmaengine: Distinguish between 'dmaengine: failed to get' messages 2012-03-06 17:01:07 +05:30
dmaengine.h dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
dmatest.c dmaengine: fix missing 'cnt' in ?: in dmatest 2012-01-23 11:43:18 -08:00
dw_dmac_regs.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
dw_dmac.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
ep93xx_dma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
fsldma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
fsldma.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
imx-dma.c dmaengine: imx-dma: dont complete descriptor for cyclic dma 2012-04-20 15:28:07 +05:30
imx-sdma.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-03-29 15:34:57 -07:00
intel_mid_dma_regs.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
intel_mid_dma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
iop-adma.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-03-29 15:34:57 -07:00
iovlock.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
Kconfig Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-03-29 15:34:57 -07:00
Makefile DMA: sa11x0: add SA-11x0 DMA driver 2012-03-07 11:32:21 +00:00
mpc512x_dma.c dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
mv_xor.c dmaengine: ensure all DMA engine drivers initialize their cookies 2012-03-13 11:37:42 +05:30
mv_xor.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
mxs-dma.c dma: mxs-dma: enable channel in device_issue_pending call 2012-04-20 15:35:58 +05:30
pch_dma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
pl330.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-03-29 15:34:57 -07:00
sa11x0-dma.c DMA: sa11x0: add SA-11x0 DMA driver 2012-03-07 11:32:21 +00:00
shdma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
shdma.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
sirf-dma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
ste_dma40_ll.c dma40: cyclic xfer support 2011-01-30 22:27:21 -08:00
ste_dma40_ll.h dmaengine/ste_dma40: support pm in dma40 2011-11-22 09:46:06 +05:30
ste_dma40.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
timb_dma.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
TODO dmaengine: remove ste_dma40 from issue_pending TODO 2011-07-14 04:02:08 +05:30
txx9dmac.c dmaengine: add context parameter to prep_slave_sg and prep_dma_cyclic 2012-03-21 19:20:23 +05:30
txx9dmac.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30