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android_kernel_oneplus_msm8998/drivers/dma
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Ludovic Desroches 782cfeb248 dmaengine: at_xdmac: fix residue computation 
commit 25c5e9626ca4d40928dc9c44f009ce2ed0a739e7 upstream.

When computing the residue we need two pieces of information: the current
descriptor and the remaining data of the current descriptor. To get
that information, we need to read consecutively two registers but we
can't do it in an atomic way. For that reason, we have to check manually
that current descriptor has not changed.

Signed-off-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Suggested-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Reported-by: David Engraf <david.engraf@sysgo.com>
Tested-by: David Engraf <david.engraf@sysgo.com>
Fixes: e1f7c9eee7 ("dmaengine: at_xdmac: creation of the atmel
eXtended DMA Controller driver")
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2016-03-16 08:42:58 -07:00
..
bestcomm dmaengine: constify of_device_id array 2015-03-18 22:13:14 +05:30
dw dmaengine: dw: disable BLOCK IRQs for non-cyclic xfer 2016-03-03 15:07:24 -08:00
hsu dmaengine: hsu: remove platform data 2015-10-17 21:22:08 -07:00
ioat dmaengine: ioatdma: add PCIe AER handlers 2015-09-21 21:10:05 +05:30
ipu genirq: Remove irq argument from irq flow handlers 2015-09-16 15:47:51 +02:00
ppc4xx dmaengine: Remove FSF mailing addresses 2015-03-16 22:28:15 +05:30
sh dmaengine: sh: usb-dmac: Fix pm_runtime_{enable,disable}() imbalance 2015-11-16 08:39:52 +05:30
xilinx dmaengine: xilinx: Fix module autoload for OF platform driver 2015-10-01 07:35:39 +05:30
acpi-dma.c dmaengine updates for 4.4-rc1 2015-11-10 10:05:17 -08:00
amba-pl08x.c dmaengine: pl08x: support dt channel assignment 2015-08-18 22:12:14 +05:30
at_hdmac.c dmaengine: at_hdmac: use %pad format string for dma_addr_t 2015-11-16 09:21:05 +05:30
at_hdmac_regs.h dmaengine: at_hdmac: use %pad format string for dma_addr_t 2015-11-16 09:21:05 +05:30
at_xdmac.c dmaengine: at_xdmac: fix residue computation 2016-03-16 08:42:58 -07:00
bcm2835-dma.c dmaengine: bcm2835-dma: Convert to use DMA pool 2015-12-05 15:36:32 +05:30
coh901318.c dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05 10:53:52 +05:30
coh901318.h
coh901318_lli.c
cppi41.c dmaengine: cppi41: add missing bitfields 2015-04-11 21:12:58 +05:30
dma-axi-dmac.c dmaengine: Add support for the Analog Devices AXI-DMAC DMA controller 2015-08-23 18:55:10 +05:30
dma-jz4740.c Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2015-04-24 09:49:37 -07:00
dma-jz4780.c dmaengine: jz4780: Kill tasklets before unregistering the device 2015-08-18 22:28:50 +05:30
dmaengine.c dmaengine updates for 4.4-rc1 2015-11-10 10:05:17 -08:00
dmaengine.h
dmatest.c kernel/params: constify struct kernel_param_ops uses 2015-05-28 11:32:10 +09:30
edma.c Merge branch 'fix/edma' into fixes 2015-12-10 08:43:43 +05:30
ep93xx_dma.c dmaengine: ep93xx: Constify platform_device_id 2015-05-04 16:38:55 +05:30
fsl-edma.c dmaengine: fsl-edma: clear pending interrupts on initialization 2015-06-25 09:22:32 +05:30
fsl_raid.c dmaengine: fsl_raid: statify fsl_re_chan_probe 2015-04-02 16:11:35 +05:30
fsl_raid.h dmaengine: Driver support for FSL RaidEngine device. 2015-04-02 16:10:27 +05:30
fsldma.c dmaengine: fsldma: Fix module autoload for OF platform driver 2015-10-01 07:34:31 +05:30
fsldma.h dmaengine: fsldma: declare slave capabilities for the generic code 2015-01-13 23:58:08 +05:30
idma64.c dmaengine updates for 4.4-rc1 2015-11-10 10:05:17 -08:00
idma64.h dmaengine: idma64: use lo_hi_readq() / lo_hi_writeq() 2015-09-25 07:54:05 +05:30
img-mdc-dma.c dmaengine: img-mdc: remove device_alloc_chan_resources handler 2015-03-18 22:44:58 +05:30
imx-dma.c dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05 10:53:52 +05:30
imx-sdma.c dmaengine: imx-sdma: remove __init annotation on sdma_event_remap 2015-11-16 09:14:25 +05:30
iop-adma.c drivers/dma/iop-adma: Use dma_alloc_writecombine() kernel-style 2015-08-25 09:59:46 +02:00
k3dma.c dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05 10:53:52 +05:30
Kconfig Merge branch 'topic/idma' into for-linus 2015-10-31 07:37:05 +05:30
lpc18xx-dmamux.c dmaengine: add driver for lpc18xx dmamux 2015-08-18 22:12:14 +05:30
Makefile dmaengine: idma: rename to INTEL_IDMA64 2015-09-24 20:55:58 +05:30
mic_x100_dma.c dmaengine: Revert "dmaengine: mic_x100: add missing spin_unlock" 2016-01-06 15:16:36 +05:30
mic_x100_dma.h dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05 10:53:52 +05:30
mmp_pdma.c dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05 10:53:52 +05:30
mmp_tdma.c dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05 10:53:52 +05:30
moxart-dma.c dmaengine: moxart-dma: Fix module autoload for OF platform driver 2015-10-01 07:34:31 +05:30
mpc512x_dma.c dmaengine: mpc512x: Fix module autoload for OF platform driver 2015-10-01 07:34:31 +05:30
mv_xor.c dmaengine updates for 4.3-rc1 2015-09-04 11:10:18 -07:00
mv_xor.h dmaengine: mv_xor: improve descriptors list handling and reduce locking 2015-06-10 22:18:31 +05:30
mxs-dma.c dmaengine: mxs: Constify platform_device_id 2015-05-04 16:38:55 +05:30
nbpfaxi.c dmaengine: nbpfaxi: Constify platform_device_id 2015-05-04 16:38:55 +05:30
of-dma.c dmaengine: of_dma: Support for DMA routers 2015-05-09 17:11:25 +05:30
omap-dma.c dmaengine: omap-dma: Enable packed accesses for cyclic transfers 2015-10-05 16:31:34 +01:00
pch_dma.c dmaengine: Remove remaining FSF mailing addresses 2015-07-06 19:18:53 +05:30
pl330.c dmaengine updates for 4.3-rc1 2015-09-04 11:10:18 -07:00
pxa_dma.c dmaengine: pxa_dma: fix cyclic transfers 2016-03-09 15:34:53 -08:00
qcom_bam_dma.c Merge branch 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma 2015-04-24 09:49:37 -07:00
s3c24xx-dma.c dmaengine: s3c24xx: Constify platform_device_id 2015-05-04 16:38:55 +05:30
sa11x0-dma.c dmaengine: sa11x0: report slave capabilities to upper layers 2015-04-17 23:24:35 +05:30
sirf-dma.c dmaengine: sirf: Fix module autoload for OF platform driver 2015-10-01 07:34:31 +05:30
ste_dma40.c dmaengine: ste_dma40: fix a trivial typo 2015-10-25 04:15:40 +05:30
ste_dma40_ll.c
ste_dma40_ll.h
sun4i-dma.c dmaengine: sun4i: fix unsafe list iteration 2015-09-30 12:17:22 +05:30
sun6i-dma.c dmaengine: sun6i: Fix module autoload for OF platform driver 2015-10-01 07:35:26 +05:30
tegra20-apb-dma.c dmaengine: tegra-apb: Simplify locking for device using global pause 2015-08-20 12:10:25 +05:30
ti-dma-crossbar.c dmaengine: ti-dma-crossbar: Add support for crossbar on AM33xx/AM43xx 2015-10-27 10:22:45 +09:00
timb_dma.c dmaengine: Remove remaining FSF mailing addresses 2015-07-06 19:18:53 +05:30
TODO dmaengine: dw: don't perform DMA when dmaengine_submit is called 2014-07-15 22:14:30 +05:30
txx9dmac.c dmaengine: txx9: Rename device_control 2014-12-22 12:33:22 +05:30
txx9dmac.h MIPS: Replace MIPS-specific 64BIT_PHYS_ADDR with generic PHYS_ADDR_T_64BIT 2014-11-24 22:46:44 +01:00
virt-dma.c Revert "dmaengine: virt-dma: don't always free descriptor upon completion" 2015-07-31 20:33:43 +05:30
virt-dma.h dmaengine: virt-dma: Fix kernel-doc annotations 2015-10-27 11:12:09 +09:00
xgene-dma.c dmaengine: xgene-dma: Fix double IRQ issue by setting IRQ_DISABLE_UNLAZY flag 2016-01-07 11:09:36 +05:30
zx296702_dma.c dmaengine updates for 4.4-rc1 2015-11-10 10:05:17 -08:00