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linux/drivers/dma
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Andy Shevchenko c9e0fc1438 dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer 
[ Upstream commit ee1cdcdae5 ]

The commit 2895b2cad6 ("dmaengine: dw: fix cyclic transfer callbacks")
re-enabled BLOCK interrupts with regard to make cyclic transfers work. However,
this change becomes a regression for non-cyclic transfers as interrupt counters
under stress test had been grown enormously (approximately per 4-5 bytes in the
UART loop back test).

Taking into consideration above enable BLOCK interrupts if and only if channel
is programmed to perform cyclic transfer.

Fixes: 2895b2cad6 ("dmaengine: dw: fix cyclic transfer callbacks")
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Mans Rullgard <mans@mansr.com>
Tested-by: Mans Rullgard <mans@mansr.com>
Acked-by: Viresh Kumar <viresh.kumar@linaro.org>
Cc: <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
History 2016-03-04 10:18:42 -05:00
..
bestcomm drivers: clean-up prom.h implicit includes 2013-10-09 20:04:04 -05:00
dw dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer 2016-03-04 10:18:42 -05:00
ioat net_dma: simple removal 2014-09-28 07:05:16 -07:00
ipu dmaengine: ipu: use return value of request_irq 2014-07-25 15:39:50 +05:30
ppc4xx Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-01-29 20:27:23 -08:00
sh dmaengine: shdmac: avoid unused variable warnings 2015-06-28 13:39:26 -04:00
xilinx dma: xilinx: Remove .owner field for driver 2014-08-19 22:36:50 +05:30
acpi-dma.c acpi-dma: convert to return error code when asked for channel 2014-02-11 23:30:50 +05:30
amba-pl08x.c dma: pl08x: Use correct specifier for size_t values 2014-08-04 13:45:26 +05:30
at_hdmac.c dma: at_hdmac: fix invalid remaining bytes detection 2014-08-07 21:52:27 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: remove unused function 2013-12-12 22:43:41 -08:00
bcm2835-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
coh901318.c dmaengine: coh901318: use dmaengine_terminate_all() API 2014-10-15 21:30:59 +05:30
coh901318.h dma: coh901318: merge header files 2013-01-07 17:36:37 +01:00
coh901318_lli.c Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma 2013-02-26 09:24:48 -08:00
cppi41.c dma: cppi41: Switch to using managed resource in probe 2014-10-15 20:26:45 +05:30
dma-jz4740.c dmaengine: jz4740: Fix non-cyclic descriptor completion 2014-09-11 10:54:25 +05:30
dmaengine.c dmaengine-3.17 2014-10-07 20:39:25 -04:00
dmaengine.h dmaengine: consolidate initialization of cookies 2012-03-13 11:37:22 +05:30
dmatest.c dmaengine-3.17 2014-10-07 20:39:25 -04:00
edma.c dmaengine: edma: fix memory leak when terminating running transfers 2015-04-24 17:13:53 -04:00
ep93xx_dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
fsl-edma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
fsldma.c dmaengine: freescale: remove FSLDMA_EXTERNAL_START control method 2014-10-15 21:31:28 +05:30
fsldma.h dmaengine: Freescale: change descriptor release process for supporting async_tx 2014-07-14 21:32:18 +05:30
imx-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
imx-sdma.c dma: imx-sdma: fix another incorrect __init annotation 2014-09-28 21:30:05 +05:30
intel_mid_dma.c dmaengine: intel_mid_dma: use DMA_COMPLETE for dma completion status 2013-10-25 11:16:04 +05:30
intel_mid_dma_regs.h dma: fix comments 2012-09-01 08:57:12 -07:00
iop-adma.c Merge commit 'dmaengine-3.13-v2' of git://git.kernel.org/pub/scm/linux/kernel/git/djbw/dmaengine 2013-11-16 12:02:36 +05:30
k3dma.c dmaengine: k3dma: fix sparse warnings 2014-01-20 13:53:20 +05:30
Kconfig Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2014-10-18 18:11:04 -07:00
Makefile dmaengine-3.17 2014-10-07 20:39:25 -04:00
mic_x100_dma.c dma: MIC X100 DMA Driver 2014-07-12 09:57:42 -07:00
mic_x100_dma.h dma: MIC X100 DMA Driver 2014-07-12 09:57:42 -07:00
mmp_pdma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
mmp_tdma.c dmaengine: mmp_tdma: add DMA_PREP_INTERRUPT flag support 2014-09-11 10:47:44 +05:30
moxart-dma.c dmaengine: Add MOXA ART DMA engine driver 2014-01-20 12:32:46 +05:30
mpc512x_dma.c dmaengine: mpc512x: register for device tree channel lookup 2014-07-26 00:21:42 +05:30
mv_xor.c dmaengine: mv_xor: bug fix for racing condition in descriptors cleanup 2015-07-03 23:02:28 -04:00
mv_xor.h dmaengine: mv_xor: bug fix for racing condition in descriptors cleanup 2015-07-03 23:02:28 -04:00
mxs-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
nbpfaxi.c dmaengine: nbpf_error_get_channel() can be static 2014-08-05 22:00:18 +05:30
of-dma.c dmaengine: of: add common xlate function for matching by channel id 2014-07-26 00:21:41 +05:30
omap-dma.c dmaengine: omap-dma: Fix memory leak when terminating running transfer 2015-04-24 17:13:54 -04:00
pch_dma.c dmaengine: pch: fix compilation for alpha target 2014-05-22 18:50:49 +05:30
pl330.c dmaengine: Fix allocation size for PL330 data buffer depth. 2014-11-17 13:01:22 +05:30
qcom_bam_dma.c dmaengine: qcom_bam_dma: Add descriptor flags 2014-07-14 22:06:41 +05:30
s3c24xx-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
sa11x0-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
sirf-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
ste_dma40.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
ste_dma40_ll.c dmaengine: ste_dma40_ll: Replace meaningless register set with comment 2013-06-04 11:12:10 +02:00
ste_dma40_ll.h dmaengine: ste_dma40: Remove unnecessary call to d40_phy_cfg() 2013-05-23 21:13:19 +02:00
sun6i-dma.c dmaengine: sun6i: Fix memcpy operation 2014-11-12 14:54:09 +05:30
tegra20-apb-dma.c dmaengine: Remove the context argument to the prep_dma_cyclic operation 2014-08-04 13:41:50 +05:30
timb_dma.c dmaengine: remove DMA unmap from drivers 2013-11-14 11:04:38 -08:00
TODO dmaengine: dw: don't perform DMA when dmaengine_submit is called 2014-07-15 22:14:30 +05:30
txx9dmac.c dma: fix build warnings in txx9 2013-12-12 22:43:41 -08:00
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 dma: fix vchan_cookie_complete() debug print 2014-01-26 17:33:45 +05:30