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b8603d2a57
linux/drivers/dma
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Lucas Stach b8603d2a57 dmaengine: imx-sdma: implement channel termination via worker 
The dmaengine documentation states that device_terminate_all may be
asynchronous and need not wait for the active transfers to stop.

This allows us to move most of the functionality currently implemented
in the sdma channel termination function to run in a worker, outside
of any atomic context. Moving this out of atomic context has two
benefits: we can now sleep while waiting for the channel to terminate,
instead of busy waiting and the freeing of the dma descriptors happens
with IRQs enabled, getting rid of a warning in the dma mapping code.

As the termination is now async, we need to implement the
device_synchronize dma engine function which simply waits for the
worker to finish its execution.

Signed-off-by: Lucas Stach <l.stach@pengutronix.de>
Signed-off-by: Robin Gong <yibin.gong@nxp.com>
Cc: stable <stable@vger.kernel.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
2018-12-05 13:53:00 +05:30
..
bestcomm treewide: kmalloc() -> kmalloc_array() 2018-06-12 16:19:22 -07:00
dw Merge branch 'topic/dw' into for-linus 2018-10-24 09:15:48 +01:00
dw-axi-dmac dmaengine: dw-axi-dmac: use dmaenginem_async_device_register to simplify the code 2018-08-29 21:43:17 +05:30
hsu dmaengine: hsu: remove dma_slave_config direction usage 2018-10-07 19:25:09 +05:30
ioat pci-v4.20-changes 2018-10-25 06:50:48 -07:00
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 2018-10-16 20:08:30 +05:30
qcom dmaengine updates for 4.18-rc1 2018-06-08 11:02:21 -07:00
sh dmaengine: rcar-dmac: set scatter/gather max segment size 2018-10-07 20:04:14 +05:30
ti dmaengine: ti: omap-dma: Fix OMAP1510 incorrect residue_granularity 2018-06-19 09:59:13 +05:30
xilinx dmaengine: xilinx_dma: Enable VDMA S2MM vertical flip support 2018-06-29 14:20:00 +05:30
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: 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 2018-11-29 19:49:41 +05:30
at_xdmac.c dmaengine: at_xdmac: move spin_lock_bh to spin_lock in tasklet 2018-09-03 16:24:05 +05:30
bcm2835-dma.c dmaengine: bcm2835: remove dma_slave_config direction usage 2018-10-07 19:18:16 +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 dma_slave_config direction usage 2018-10-07 19:19:03 +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: remove dma_slave_config direction usage 2018-10-07 19:20:14 +05:30
dma-jz4780.c Merge branch 'topic/jz' into for-linus 2018-10-24 09:16:04 +01:00
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: Remove use of VLAs 2018-04-16 21:05:54 +05:30
ep93xx_dma.c dmaengine: ep93xx_dma: remove dma_slave_config direction usage 2018-10-07 19:25:11 +05:30
fsl_raid.c dmaengine: fsl_raid: make of_device_ids const. 2017-06-29 09:25:28 +05:30
fsl_raid.h dmaengine: Driver support for FSL RaidEngine device. 2015-04-02 16:10:27 +05:30
fsl-edma-common.c dmaengine: fsl-edma: remove dma_slave_config direction usage 2018-10-09 14:29:58 +05:30
fsl-edma-common.h dmaengine: fsl-edma: remove dma_slave_config direction usage 2018-10-09 14:29:58 +05:30
fsl-edma.c dmaengine: fsl-edma: add edma version and configurable registers 2018-09-11 12:06:39 +05:30
fsldma.c dmaengine: fsldma: move spin_lock_bh to spin_lock in tasklet 2018-09-03 16:23:00 +05:30
fsldma.h dmaengine: fsldma: set BWC, DAHTS and SAHTS values correctly 2017-06-22 18:31:35 +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: imx-dma: remove dma_slave_config direction usage 2018-10-07 19:25:10 +05:30
imx-sdma.c dmaengine: imx-sdma: implement channel termination via worker 2018-12-05 13:53:00 +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: remove dma_slave_config direction usage 2018-10-07 19:25:10 +05:30
Kconfig Merge branch 'topic/jz' into for-linus 2018-10-24 09:16:04 +01:00
lpc18xx-dmamux.c dmaengine: add driver for lpc18xx dmamux 2015-08-18 22:12:14 +05:30
Makefile dmaengine: fsl-edma: add ColdFire mcf5441x edma support 2018-09-11 12:06:39 +05:30
mcf-edma.c dmaengine: mcf-edma: avoid warning for wrong pointer cast 2018-09-18 12:15:45 -07:00
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 dmaengine: Add an enum for the dmaengine alignment constraints 2015-08-05 10:53:52 +05:30
mmp_pdma.c dmaengine: mmp_pdma: convert callback to helper function 2016-08-08 08:11:39 +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 dmaengine: mv_xor: move spin_lock_bh to spin_lock in tasklet 2018-09-03 16:23:31 +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 dmaengine: mxs-dma: use dmaenginem_async_device_register to simplify the code 2018-08-29 21:43:18 +05:30
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 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: fix semicolon.cocci warnings 2018-09-11 11:40:35 +05:30
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: sprd: Support DMA link-list mode 2018-09-03 16:58:50 +05:30
st_fdma.c dmaengine: st_fdma: use dmaenginem_async_device_register to simplify the code 2018-08-29 21:43:17 +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: use dmaenginem_async_device_register to simplify the code 2018-08-29 21:43:17 +05:30
stm32-dma.c dmaengine: stm32-dma: check whether length is aligned on FIFO threshold 2018-10-02 20:32:15 +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-mdma: use dmaenginem_async_device_register to simplify the code 2018-08-29 21:43:17 +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: Support non-flow controlled slave configuration 2017-11-29 19:35:05 +05:30
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: Use proper enum in td_prep_slave_sg 2018-10-02 20:11:09 +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