github-mirror/linux
1
0
Fork 0
mirror of https://github.com/torvalds/linux.git synced 2026-06-08 14:42:37 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity Graph
7e7befd8de
linux/drivers/dma
History
Achim Dahlhoff 129c337c66 dmaengine: sh: rcar-dmac: Fix glitch in dmaengine_tx_status 
commit 6e7da74775 upstream.

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: 73a47bd0da ("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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-02 09:58:55 +02:00
..
bestcomm treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
dw dmaengine: dw: Fix FIFO size for Intel Merrifield 2018-12-13 09:16:19 +01:00
dw-axi-dmac dmaengine: dw-axi-dmac: fix spelling mistake: "catched" -> "caught" 2018-03-27 17:44:39 +05:30
hsu dmaengine: hsu: Support dmaengine_terminate_sync() 2018-07-10 21:10:44 +05:30
ioat driver/dma/ioat: Call del_timer_sync() without holding prep_lock 2018-11-13 11:08:36 -08:00
ipu treewide: Use array_size() in vmalloc() 2018-06-12 16:19:22 -07:00
mediatek dmaengine: mediatek: Add MediaTek High-Speed DMA controller for MT7622 and MT7623 SoC 2018-03-27 15:18:15 +05:30
ppc4xx dmaengine: ppc4xx: fix off-by-one build failure 2018-11-13 11:08:41 -08:00
qcom dmaengine: qcom_hidma: initialize tx flags in hidma_prep_dma_* 2019-04-05 22:33:15 +02:00
sh dmaengine: sh: rcar-dmac: Fix glitch in dmaengine_tx_status 2019-05-02 09:58:55 +02:00
ti dmaengine: cppi41: delete channel from pending list when stop channel 2018-12-13 09:16:20 +01:00
xilinx dmaengine: xilinx_dma: Remove __aligned attribute on zynqmp_dma_desc_ll 2019-02-12 19:47:02 +01:00
acpi-dma.c
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: Use vchan_terminate_vdesc() instead of desc_free 2017-12-04 22:33:51 +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: fix module unloading 2018-12-05 19:32:12 +01:00
at_xdmac.c dmaengine: at_xdmac: Fix wrongfull report of a channel as in use 2019-03-13 14:02:36 -07:00
bcm-sba-raid.c treewide: Use struct_size() for devm_kmalloc() and friends 2018-06-06 11:15:43 -07:00
bcm2835-dma.c dmaengine: bcm2835: Fix abort of transactions 2019-02-12 19:47:24 +01:00
coh901318_lli.c
coh901318.c dmaengine: coh901318: Remove unnecessary 0x prefixes before %pad 2017-11-08 10:46:46 +05:30
coh901318.h
dma-axi-dmac.c dmaengine: axi-dmac: Request IRQ with IRQF_SHARED 2018-05-02 10:06:42 +05:30
dma-jz4740.c dmaengine: jz4740: disable/unprepare clk if probe fails 2017-12-11 09:00:06 +05:30
dma-jz4780.c dmaengine: dma-jz4780: Return error if not probed from DT 2018-11-13 11:08:38 -08:00
dmaengine.c Merge branch 'ida-4.19' of git://git.infradead.org/users/willy/linux-dax 2018-08-26 11:48:42 -07:00
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: dmatest: Abort test in case of mapping error 2019-03-13 14:02:36 -07:00
ep93xx_dma.c headers: separate linux/mod_devicetable.h from linux/platform_device.h 2018-07-07 17:52:26 +02:00
fsl_raid.c dmaengine: fsl_raid: make of_device_ids const. 2017-06-29 09:25:28 +05:30
fsl_raid.h
fsl-edma.c dmaengine: fsl-edma: disable clks on all error paths 2017-12-15 09:53:04 +05:30
fsldma.c dmaengine: fsldma: simplify getting .drvdata 2018-04-22 21:37:17 +05:30
fsldma.h dmaengine: fsldma: set BWC, DAHTS and SAHTS values correctly 2017-06-22 18:31:35 +05:30
idma64.c dmaengine: idma64: Support dmaengine_terminate_sync() 2018-07-10 21:10:44 +05:30
idma64.h
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: imx-dma: fix warning comparison of distinct pointer types 2019-04-05 22:33:15 +02:00
imx-sdma.c dmaengine: imx-sdma: use GFP_NOWAIT for dma descriptor allocations 2018-12-13 09:16:20 +01:00
iop-adma.c
k3dma.c dmaengine: k3dma: Off by one in k3_of_dma_simple_xlate() 2018-06-28 11:57:21 +05:30
Kconfig Merge branch 'topic/imx' into for-linus 2018-08-17 17:59:27 +05:30
lpc18xx-dmamux.c
Makefile dmaengine: Add Actions Semi Owl family S900 DMA driver 2018-08-09 08:16:00 +05:30
mic_x100_dma.c dmaengine: mic_x100_dma: use devm_kzalloc to fix an issue 2018-08-27 11:16:04 +05:30
mic_x100_dma.h
mmp_pdma.c
mmp_tdma.c
moxart-dma.c treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
mpc512x_dma.c
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 treewide: kzalloc() -> kcalloc() 2018-06-12 16:19:22 -07:00
mv_xor.h dmaengine: mv_xor: Add support for scatter-gather DMA mode 2016-11-25 11:16:36 +05:30
mxs-dma.c dmaengine: mxs-dma: Switch to SPDX identifier 2018-05-23 11:10:31 +05:30
nbpfaxi.c dmaengine: nbpfaxi: Mark expected switch fall-through 2018-07-09 17:01:35 +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: Add Actions Semi Owl family S900 DMA driver 2018-08-09 08:16:00 +05:30
pch_dma.c dmaengine: pch_dma: Replace PCI pool old API 2017-10-31 17:01:06 +05:30
pl330.c DMAengine updates for v4.19-rc1 2018-08-18 15:55:59 -07:00
pxa_dma.c dmaengine: pxa: add a default requestor policy 2018-06-18 21:29:23 +02:00
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 treewide: Use struct_size() for kmalloc()-family 2018-06-06 11:15:43 -07:00
sirf-dma.c dmaengine: sirf-dma: remove unused ‘sdesc’ 2016-12-12 22:25:22 +05:30
sprd-dma.c dmaengine updates for 4.18-rc1 2018-06-08 11:02:21 -07:00
st_fdma.c
st_fdma.h
ste_dma40_ll.c
ste_dma40_ll.h
ste_dma40.c dmaengine: ste_dma40: Remove VLA usage 2018-07-02 17:46:24 +05:30
stm32-dma.c dmaengine: stm32: replace "%p" with "%pK" 2018-07-09 23:01:57 +05:30
stm32-dmamux.c dmaengine: stm32-dmamux: fix a potential buffer overflow 2018-03-22 10:51:35 +05:30
stm32-mdma.c dmaengine: stm32: replace "%p" with "%pK" 2018-07-09 23:01:57 +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: avoid overflow of byte tracking 2019-04-05 22:33:16 +02:00
tegra210-adma.c dmaengine: tegra210-adma: fix of_irq_get() error check 2017-08-09 11:39:16 +05:30
timb_dma.c dmaengine: timb_dma: fix spelling mistake: "Couldnt" -> "Couldn't" 2017-12-11 08:57:38 +05:30
TODO
txx9dmac.c dmaengine: txx9dmac: simplify getting .drvdata 2018-04-22 21:38:06 +05:30
txx9dmac.h
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: remove unused xgene_dma_invalidate_buffer 2017-08-22 22:13:44 +05:30
zx_dma.c treewide: devm_kzalloc() -> devm_kcalloc() 2018-06-12 16:19:22 -07:00