Ludovic Desroches 25c5e9626c dmaengine: at_xdmac: fix residue computation ... 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") Cc: stable@vger.kernel.org #4.1 and later Signed-off-by: Vinod Koul <vinod.koul@intel.com>		2016-03-10 16:32:36 +05:30
..
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	2016-02-15 22:19:32 +05:30
hsu	dmaengine: hsu: speed up residue calculation	2015-12-05 14:00:34 +05:30
ioat	dmaengine: IOATDMA: fix timer code that continues to restart channels during idle	2016-01-30 22:29:03 +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 updates for 4.5-rc1	2016-01-13 10:59:52 -08:00
xilinx	dmaengine: xilinx: Fix module autoload for OF platform driver	2015-10-01 07:35:39 +05:30
acpi-dma.c	dmaengine: acpi-dma: check for 64-bit MMIO address	2015-12-05 14:00:34 +05:30
amba-pl08x.c	dmaengine: pl08x: support dt channel assignment	2015-08-18 22:12:14 +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_hdmac.c	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	2016-03-10 16:32:36 +05:30
bcm2835-dma.c	dmaengine: bcm2835-dma: Convert to use DMA pool	2015-12-05 15:36:32 +05:30
coh901318_lli.c
coh901318.c	dmaengine: Add an enum for the dmaengine alignment constraints	2015-08-05 10:53:52 +05:30
coh901318.h
cppi41.c	dmaengine: cppi41: add missing bitfields	2015-04-11 21:12:58 +05:30
dma-axi-dmac.c	dmaengine: axi_dmac: Add synchronization support	2015-11-16 08:28:52 +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	Merge branch 'topic/async' into for-linus	2016-01-06 15:17:47 +05:30
dmaengine.h
dmatest.c	kernel/params: constify struct kernel_param_ops uses	2015-05-28 11:32:10 +09:30
edma.c	dmaengine: edma: fix residue race for cyclic	2016-02-08 08:42:55 +05:30
ep93xx_dma.c	dmaengine: ep93xx: Constify platform_device_id	2015-05-04 16:38:55 +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
fsl-edma.c	dmaengine: fsl-edma: add PM suspend/resume support	2015-12-05 15:52:13 +05:30
fsldma.c	dmaengine: fsldma: fix memory leak	2016-03-09 12:15:22 +05:30
fsldma.h	dmaengine: fsldma: declare slave capabilities for the generic code	2015-01-13 23:58:08 +05:30
idma64.c	dmaengine: idma64: use local variable to index descriptor	2015-12-05 13:54:28 +05:30
idma64.h	dmaengine: idma64: set maximum allowed segment size for DMA	2015-12-05 13:54:28 +05:30
img-mdc-dma.c	dmaengine: mdc: Correct terminate_all handling	2015-12-18 11:12:29 +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	sound updates for 4.5-rc1	2016-01-17 12:05:31 -08:00
lpc18xx-dmamux.c	dmaengine: add driver for lpc18xx dmamux	2015-08-18 22:12:14 +05:30
Makefile	dmaengine: Add STM32 DMA driver	2015-11-16 08:56:10 +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: mv_xor: add suspend/resume support	2016-01-06 15:42:27 +05:30
mv_xor.h	dmaengine: mv_xor: add suspend/resume support	2016-01-06 15:42:27 +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	Merge branch 'topic/omap' into for-linus	2016-01-06 15:18:19 +05:30
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	2016-03-03 21:06:45 +05:30
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_ll.c
ste_dma40_ll.h
ste_dma40.c	ste_dma40: Delete an unnecessary variable initialisation in d40_probe()	2015-12-10 09:17:10 +05:30
stm32-dma.c	dmaengine: stm32-dma: Fix unchecked deference of chan->desc	2015-12-10 09:45:22 +05:30
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: Free interrupts before killing tasklets	2015-12-05 16:13:08 +05:30
ti-dma-crossbar.c	dmaengine: ti-dma-crossbar: dra7: Support for reserving DMA event ranges	2015-11-30 15:09:16 +05:30
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	dmaengine: virt-dma: don't always free descriptor upon completion	2015-11-16 08:32:16 +05:30
virt-dma.h	Merge branch 'topic/async' into for-linus	2016-01-06 15:17:47 +05:30
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