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ccc3d69764
linux/drivers/dma
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Rabin Vincent ccc3d69764 dmaengine: ste_dma40: don't allow high priority dest event lines 
Hardware bug: when a logical channel is triggerred by a high priority
destination event line, an extra packet transaction is generated in case
of important data write response latency on previous logical channel A
and if the source transfer of current logical channel B is already
completed and if no other channel with a higher priority than B is
waiting for execution.

Software workaround: do not set the high priority level for the
destination event lines that trigger logical channels.

Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Reviewed-by: Shreshtha Kumar Sahu <shreshthakumar.sahu@stericsson.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Fabio Baltieri <fabio.baltieri@linaro.org>
2013-01-14 10:50:37 +01:00
..
ioat Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next 2012-12-12 18:07:07 -08:00
ipu dma: ipu: rename mach/ipu.h to include/linux/dma/ipu-dma.h 2012-10-15 10:03:12 +08:00
ppc4xx dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
sh dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
amba-pl08x.c drivers/dma/amba-pl08x.c: fix error return code 2012-08-22 09:51:04 +05:30
at_hdmac_regs.h ARM: at91: move platform_data definitions 2012-09-14 11:16:40 +02:00
at_hdmac.c Sound updates for 3.7-rc1 2012-10-09 07:07:14 +09:00
coh901318_lli.c dmaengine: Use sg_dma_address instead of sg_phys 2012-05-11 12:04:38 +05:30
coh901318_lli.h dmaengine: move drivers to dma_transfer_direction 2011-10-27 20:53:43 +05:30
coh901318.c dma: coh901318: use devm allocation 2012-06-14 08:42:26 +05:30
dmaengine.c drivers/dma/dmaengine.c: lower the priority of 'failed to get' dma channel message 2012-10-06 03:04:36 +09:00
dmaengine.h dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
dmatest.c dmatest: check for dma mapping error 2012-12-17 17:15:13 -08:00
dw_dmac_regs.h drivers/dma/dw_dmac: make driver's endianness configurable 2012-10-25 14:37:53 -07:00
dw_dmac.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
edma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
ep93xx_dma.c Sound updates for 3.7-rc1 2012-10-09 07:07:14 +09:00
fsldma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
fsldma.h dmaengine: move last completed cookie into generic dma_chan structure 2012-03-13 11:36:06 +05:30
imx-dma.c Merge branch 'arm-next' of git://git.xilinx.com/linux-xlnx into next/cleanup 2012-11-06 07:51:06 -08:00
imx-sdma.c dma: imx-sdma: remove unneeded mach/hardware.h inclusion 2012-10-15 10:03:13 +08:00
intel_mid_dma_regs.h dma: fix comments 2012-09-01 08:57:12 -07:00
intel_mid_dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
iop-adma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
iovlock.c
Kconfig drivers/dma/dw_dmac: make driver's endianness configurable 2012-10-25 14:37:53 -07:00
Makefile dmaengine: mmp-pdma support 2012-09-14 08:14:07 +05:30
mmp_pdma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
mmp_tdma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
mpc512x_dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
mv_xor.c ARM: arm-soc: Updates for Marvell mvebu/kirkwood 2012-12-14 14:54:26 -08:00
mv_xor.h dma: mv_xor: clear the window override control registers 2012-11-22 18:16:37 +01:00
mxs-dma.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2012-10-10 11:10:41 +09:00
omap-dma.c ARM: OMAP: Move plat-omap/dma-omap.h to include/linux/omap-dma.h 2012-11-30 08:41:50 -08:00
pch_dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
pl330.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
sa11x0-dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
sirf-dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
ste_dma40_ll.c dmaengine: ste_dma40: use writel_relaxed for lcxa 2013-01-14 10:50:15 +01:00
ste_dma40_ll.h dma: fix comments 2012-09-01 08:57:12 -07:00
ste_dma40.c dmaengine: ste_dma40: don't allow high priority dest event lines 2013-01-14 10:50:37 +01:00
tegra20-apb-dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
timb_dma.c dma: remove use of __devinit 2012-11-28 12:42:36 -08:00
TODO
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
virt-dma.c dmaengine: virt-dma: add support for cyclic DMA periodic callbacks 2012-07-01 14:15:23 +01:00
virt-dma.h dmaengine: virt-dma: add support for cyclic DMA periodic callbacks 2012-07-01 14:15:23 +01:00