Nicolas Ferre 17a766decb dmaengine: at_hdmac: remove clear-on-read in atc_dostart() ...

commit ed8b0d67f3 upstream.

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>
Signed-off-by: Vinod Koul <vinod.koul@linux.intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

2012-05-07 08:56:33 -07:00

..

ioat

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2011-05-28 12:35:15 -07:00

ipu

dma: Ipu: Convert interupt code

2011-03-25 22:09:00 +01:00

ppc4xx

Merge branch 'old_next' into next

2011-04-06 11:51:12 +05:30

amba-pl08x.c

ARM: amba: make probe() functions take const id tables

2011-02-23 16:24:14 +00:00

at_hdmac_regs.h

at_hdmac: bugfix for enabling channel irq

2012-02-13 11:06:07 -08:00

at_hdmac.c

dmaengine: at_hdmac: remove clear-on-read in atc_dostart()

2012-05-07 08:56:33 -07:00

coh901318_lli.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

coh901318_lli.h

tree-wide: Assorted spelling fixes

2010-02-09 11:13:56 +01:00

coh901318.c

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2011-05-28 12:35:15 -07:00

dmaengine.c

async_tx: make async_tx channel switching opt-in

2010-10-07 17:08:32 -07:00

dmatest.c

Haavard Skinnemoen has left Atmel

2011-05-18 23:24:50 +02:00

dw_dmac_regs.h

dmaengine/dw_dmac: Update maintainer-ship

2011-05-25 18:30:37 +05:30

dw_dmac.c

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2011-05-28 12:35:15 -07:00

fsldma.c

dt/fsldma: fix build warning caused by of_platform_device changes

2011-04-10 23:34:38 -07:00

fsldma.h

fsldma: fix controller lockups

2011-03-11 17:52:36 -08:00

imx-dma.c

dmaengine i.MX dma: initialize dma capabilities outside channel loop

2011-01-31 12:36:23 +01:00

imx-sdma.c

Merge branch 'imx' into dmaengine-fixes

2011-02-14 02:40:46 -08:00

intel_mid_dma_regs.h

Fix common misspellings

2011-03-31 11:26:23 -03:00

intel_mid_dma.c

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2011-05-28 12:35:15 -07:00

iop-adma.c

dma: use BUG_ON correctly in iop-adma.c, v4

2011-03-31 11:07:40 +05:30

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

pch_dma: Support new device LAPIS Semiconductor ML7831 IOH

2012-04-22 16:21:44 -07:00

Makefile

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2011-03-22 17:53:13 -07:00

mpc512x_dma.c

Fix common misspellings

2011-03-31 11:26:23 -03:00

mv_xor.c

dma: use BUG_ON correctly in mv_xor.c, v4

2011-03-31 11:07:40 +05:30

mv_xor.h

mv_xor: implement a private tx_list

2009-09-08 17:53:03 -07:00

mxs-dma.c

dmaengine: mxs-dma: add dma support for i.MX23/28

2011-03-02 07:06:27 +05:30

pch_dma.c

pch_dma: Support new device LAPIS Semiconductor ML7831 IOH

2012-04-22 16:21:44 -07:00

pl330.c

ARM: amba: make probe() functions take const id tables

2011-02-23 16:24:14 +00:00

shdma.c

dmaengine: shdma: SH_DMAC_MAX_CHANNELS message fix

2011-06-14 15:03:07 +09:00

shdma.h

dmaengine: shdma: Update SH_DMAC_MAX_CHANNELS to 20

2011-05-25 11:36:17 +09:00

ste_dma40_ll.c

dma40: cyclic xfer support

2011-01-30 22:27:21 -08:00

ste_dma40_ll.h

dma40: cyclic xfer support

2011-01-30 22:27:21 -08:00

ste_dma40.c

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2011-05-28 12:35:15 -07:00

timb_dma.c

mfd: Use mfd cell platform_data for timberdale cells platform bits

2011-05-26 19:45:05 +02:00

TODO

dmaengine: add TODO items for future work on dma drivers

2011-05-26 14:44:30 -07:00

txx9dmac.c

Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/async_tx

2010-05-21 17:05:46 -07:00

txx9dmac.h

txx9dmac: implement a private tx_list

2009-09-08 17:53:03 -07:00