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4e4106f5e9
linux/drivers/dma
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Paul Cercueil 4e4106f5e9 dmaengine: jz4780: Fix transfers being ACKed too soon 
When a multi-descriptor DMA transfer is in progress, the "IRQ pending"
flag will apparently be set for that channel as soon as the last
descriptor loads, way before the IRQ actually happens. This behaviour
has been observed on the JZ4725B, but maybe other SoCs are affected.

In the case where another DMA transfer is running into completion on a
separate channel, the IRQ handler would then run the completion handler
for our previous channel even if the transfer didn't actually finish.

Fix this by checking in the completion handler that we're indeed done;
if not the interrupted DMA transfer will simply be resumed.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-05-21 09:59:58 +05:30
..
bestcomm treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
dw Merge branch 'topic/dw' into for-linus 2019-03-12 12:03:47 +05:30
dw-axi-dmac dmaengine: dw-axi-dmac: Fix trivia typo 2019-01-08 22:36:18 +05:30
hsu dmaengine: hsu: remove dma_slave_config direction usage 2018-10-07 19:25:09 +05:30
ioat dmaengine: ioatdma: support latency tolerance report (LTR) for v3.4 2019-02-25 12:18:38 +05:30
ipu treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
mediatek dmaengine: mediatek-cqdma: fix wrong register usage in mtk_cqdma_start 2019-04-26 17:26:38 +05:30
ppc4xx dmaengine: ppc4xx: fix off-by-one build failure 2018-10-16 20:08:30 +05:30
qcom dmaengine: qcom_hidma: assign channel cookie correctly 2019-01-20 10:43:34 +05:30
sh dmaengine updates for v5.2-rc1 2019-05-09 08:51:45 -07:00
ti dmaengine: cppi41: delete channel from pending list when stop channel 2018-12-05 14:01:59 +05:30
xilinx dmaengine updates for v5.1-rc1 2019-03-14 09:11:54 -07:00
acpi-dma.c dmaengine: acpi-dma: align debug message with flow 2016-02-22 09:06:09 +05:30
altera-msgdma.c dmaengine: altera: Use IRQ-safe spinlock calls in the error paths as well 2017-10-20 11:51:10 +05:30
amba-pl08x.c dmaengine: pl08x: be fair when re-assigning physical channel 2019-03-25 21:52:28 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: Remove unnecessary 0x prefixes before %pad 2017-11-08 10:47:04 +05:30
at_hdmac.c dmaengine: at_hdmac: drop useless LIST_HEAD 2019-01-07 09:49:26 +05:30
at_xdmac.c dmaengine: at_xdmac: remove a stray bottom half unlock 2019-05-04 16:11:02 +05:30
bcm2835-dma.c dmaengine updates for v5.2-rc1 2019-05-09 08:51:45 -07:00
bcm-sba-raid.c dmaengine: bcm-sba-raid: Use dev_get_drvdata() 2019-04-29 10:47:15 +05:30
coh901318_lli.c dmaengine: coh901318: use NULL for pointer initialization 2016-09-26 22:28:24 +05:30
coh901318.c dmaengine: coh901318: Remove unused variable 2018-11-26 13:35:52 +05:30
coh901318.h
dma-axi-dmac.c dmaengine: axi-dmac: Enable DMA_INTERLEAVE capability 2019-04-24 11:08:38 +05:30
dma-jz4740.c dmaengine: jz4740: remove dma_slave_config direction usage 2018-10-07 19:20:14 +05:30
dma-jz4780.c dmaengine: jz4780: Fix transfers being ACKed too soon 2019-05-21 09:59:58 +05:30
dmaengine.c mm: replace all open encodings for NUMA_NO_NODE 2019-03-05 21:07:14 -08:00
dmaengine.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
dmatest.c dmaengine updates for v5.1-rc1 2019-03-14 09:11:54 -07:00
ep93xx_dma.c dmaengine: ep93xx: fix some typo 2018-11-11 14:56:49 +05:30
fsl_raid.c dmaengine: fsl_raid: make of_device_ids const. 2017-06-29 09:25:28 +05:30
fsl_raid.h
fsl-edma-common.c dmaengine: fsl-edma: dma map slave device address 2019-02-04 12:32:53 +05:30
fsl-edma-common.h dmaengine: fsl-edma: Fix typo in Vybrid name 2019-05-04 15:50:26 +05:30
fsl-edma.c dmaengine: fsl-edma: Adjust indentation 2019-05-04 15:50:26 +05:30
fsl-qdma.c dmaengine: fsl-qdma: add MODULE_LICENSE 2019-01-07 09:50:16 +05:30
fsldma.c dmaengine: fsldma: Replace DMA_IN/OUT by FSL_DMA_IN/OUT 2019-01-07 09:50:16 +05:30
fsldma.h dmaengine: fsldma: Add 64-bit I/O accessors for powerpc64 2019-02-04 12:56:54 +05:30
idma64.c dmaengine: idma64: Move driver name to the header 2019-04-26 16:55:23 +05:30
idma64.h dmaengine: idma64: Use actual device for DMA transfers 2019-03-21 19:48:26 +05:30
img-mdc-dma.c dmaengine: img-mdc-dma: Use vchan_terminate_vdesc() instead of desc_free 2017-12-04 22:33:51 +05:30
imx-dma.c dmaengine updates for v5.1-rc1 2019-03-14 09:11:54 -07:00
imx-sdma.c dmaengine: imx-sdma: Only check ratio on parts that support 1:1 2019-04-26 17:18:21 +05:30
iop-adma.c dmaengine: iop-adma: convert callback to helper function 2016-08-08 08:11:39 +05:30
k3dma.c dmaengine: k3dma: Add support for dma-channel-mask 2019-02-04 14:30:57 +05:30
Kconfig dmaengine: axi-dmac: extend support for ZynqMP arch 2019-03-25 21:52:28 +05:30
lpc18xx-dmamux.c
Makefile dmaengine: fsl-qdma: Add qDMA controller driver for Layerscape SoCs 2019-01-07 09:50:16 +05:30
mcf-edma.c dmaengine: fsl-edma: dma map slave device address 2019-02-04 12:32:53 +05:30
mic_x100_dma.c dmaengine: mic_x100_dma: convert to DEFINE_SHOW_ATTRIBUTE 2018-12-17 11:49:41 +05:30
mic_x100_dma.h
mmp_pdma.c dmaengine: mmp_pdma: remove dma_slave_config direction usage 2018-11-05 10:32:46 +05:30
mmp_tdma.c Merge branch 'topic/dmam' into for-linus 2018-10-24 09:15:43 +01:00
moxart-dma.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
mpc512x_dma.c Merge branch 'topic/err_reporting' into for-linus 2016-10-03 09:17:33 +05:30
mv_xor_v2.c dmaengine: mv_xor_v2: use {lower,upper}_32_bits to configure HW descriptor address 2018-07-25 17:53:22 +05:30
mv_xor.c Merge branch 'topic/mv' into for-linus 2019-03-12 12:04:16 +05:30
mv_xor.h dmaengine: mv_xor: Add support for scatter-gather DMA mode 2016-11-25 11:16:36 +05:30
mxs-dma.c cross-tree: phase out dma_zalloc_coherent() 2019-01-08 07:58:37 -05:00
nbpfaxi.c dmaengine: nbpfaxi: Use dev_get_drvdata() 2019-04-29 10:47:15 +05:30
of-dma.c dmaengine: Convert to using %pOF instead of full_name 2017-07-19 09:30:44 +05:30
owl-dma.c dmaengine: owl: Fix warnings generated during build 2018-10-15 22:39:16 +05:30
pch_dma.c PCI: Move Rohm Vendor ID to generic list 2019-02-01 17:24:52 -06:00
pl330.c dmaengine: pl330: _stop: clear interrupt status 2019-04-26 16:51:37 +05:30
pxa_dma.c dmaengine-4.21-rc1 2019-01-01 15:45:48 -08:00
s3c24xx-dma.c headers: separate linux/mod_devicetable.h from linux/platform_device.h 2018-07-07 17:52:26 +02:00
sa11x0-dma.c dmaengine: sa11x0: drop useless LIST_HEAD 2019-01-07 09:49:26 +05:30
sirf-dma.c dmaengine: sirf-dma: remove unused ‘sdesc’ 2016-12-12 22:25:22 +05:30
sprd-dma.c dmaengine: sprd: Change channel id to slave id for DMA cell specifier 2019-02-25 12:11:19 +05:30
st_fdma.c dmaengine: st_fdma: use struct_size() in kzalloc() 2019-01-07 18:05:22 +05:30
st_fdma.h dmaengine: st_fdma: Add STMicroelectronics FDMA driver header file 2016-10-18 20:12:06 +05:30
ste_dma40_ll.c dmaengine: ste_dma40_ll: make d40_width_to_bits static 2016-06-08 08:59:55 +05:30
ste_dma40_ll.h
ste_dma40.c dmaengine: ste_dma40: remove dma_slave_config direction usage 2018-11-24 20:22:21 +05:30
stm32-dma.c dmaengine: stm32-dma: fix residue calculation in stm32-dma 2019-05-04 15:46:58 +05:30
stm32-dmamux.c dmaengine: stm32-dmamux: Add PM Runtime support 2019-01-07 09:52:24 +05:30
stm32-mdma.c dmaengine: stm32-mdma: Revert "dmaengine: stm32-mdma: Add a check on read_u32_array" 2019-03-25 21:56:54 +05:30
sun4i-dma.c dmaengine: sun4i: fix invalid argument 2017-04-24 09:50:05 +05:30
sun6i-dma.c dmaengine: sun6i: Retrieve channel count/max request from devicetree 2017-10-23 11:44:03 +05:30
tegra20-apb-dma.c dmaengine: tegra-apb: Use struct_size() in devm_kzalloc() 2019-01-07 18:07:58 +05:30
tegra210-adma.c dmaengine: tegra210-adma: restore channel status 2019-05-04 16:13:42 +05:30
timb_dma.c dmaengine: timb_dma: Use struct_size() in kzalloc() 2019-01-20 10:50:07 +05:30
TODO
txx9dmac.c drivers: Remove explicit invocations of mmiowb() 2019-04-08 12:01:02 +01:00
txx9dmac.h
uniphier-mdmac.c dmaengine: uniphier-mdmac: add UniPhier MIO DMAC driver 2018-11-24 19:42:59 +05:30
virt-dma.c dmaengine: virt-dma: Add helper to free/reuse a descriptor 2017-12-04 22:33:51 +05:30
virt-dma.h dmaengine: virt-dma: Support for race free transfer termination 2017-12-04 22:33:51 +05:30
xgene-dma.c dmaengine: xgene-dma: fix spelling mistake "descripto" -> "descriptor" 2019-04-26 16:57:15 +05:30
zx_dma.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00