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linux/drivers/dma
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Achim Dahlhoff 6e7da74775 dmaengine: sh: rcar-dmac: Fix glitch in dmaengine_tx_status 
The tx_status poll in the rcar_dmac driver reads the status register
which indicates which chunk is busy (DMACHCRB). Afterwards the point
inside the chunk is read from DMATCRB. It is possible that the chunk
has changed between the two reads. The result is a non-monotonous
increase of the residue. Fix this by introducing a 'safe read' logic.

Fixes: 73a47bd0da66 ("dmaengine: rcar-dmac: use TCRB instead of TCR for residue")
Signed-off-by: Achim Dahlhoff <Achim.Dahlhoff@de.bosch.com>
Signed-off-by: Dirk Behme <dirk.behme@de.bosch.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Cc: <stable@vger.kernel.org> # v4.16+
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2019-04-23 10:45:34 +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
cross-tree: phase out dma_zalloc_coherent()
2019-01-08 07:58:37 -05:00
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: sh: rcar-dmac: Fix glitch in dmaengine_tx_status
2019-04-23 10:45:34 +05:30
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: amba-pl08x: convert to DEFINE_SHOW_ATTRIBUTE
2018-12-17 11:49:41 +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: Fix wrongfull report of a channel as in use
2019-02-02 15:55:26 +05:30
bcm2835-dma.c
dmaengine: bcm2835: Avoid GFP_KERNEL in device_prep_slave_sg
2019-04-23 10:43:54 +05:30
bcm-sba-raid.c
treewide: Use struct_size() for devm_kmalloc() and friends
2018-06-06 11:15:43 -07:00
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: Use struct_size() in kzalloc()
2019-01-20 10:51:38 +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: dma-jz4780: Use struct_size() in devm_kzalloc()
2019-01-07 18:05:17 +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: dma map slave device address
2019-02-04 12:32:53 +05:30
fsl-edma.c
dmaengine: fsl-edma: dma map slave device address
2019-02-04 12:32:53 +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
Merge branch 'topic/intel' into for-linus
2018-10-24 09:15:59 +01:00
idma64.h
asm-generic changes for 4.6
2016-03-24 23:13:48 -07:00
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 updates for v5.1-rc1
2019-03-14 09:11:54 -07:00
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: fsl-qdma: Add qDMA controller driver for Layerscape SoCs
2019-01-07 09:50:16 +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
Merge branch 'topic/renesas' into for-linus
2018-10-24 09:16:22 +01:00
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: drop useless LIST_HEAD
2019-01-07 09:49:26 +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: Add PM Runtime support
2019-01-07 09:52:24 +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: Use struct_size() in devm_kzalloc()
2019-01-20 10:48:23 +05:30
timb_dma.c
dmaengine: timb_dma: Use struct_size() in kzalloc()
2019-01-20 10:50:07 +05:30
TODO
…
txx9dmac.c
dmaengine: txx9dmac: simplify getting .drvdata
2018-04-22 21:38:06 +05:30
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
cross-tree: phase out dma_zalloc_coherent()
2019-01-08 07:58:37 -05:00
zx_dma.c
treewide: devm_kzalloc() -> devm_kcalloc()
2018-06-12 16:19:22 -07:00