linux-stable.git/drivers/dma, branch v5.4.252

dmaengine: pl330: rename _start to prevent build error

2023-06-09T08:28:52+00:00

[ Upstream commit a1a5f2c887252dec161c1e12e04303ca9ba56fa9 ]

"_start" is used in several arches and proably should be reserved
for ARCH usage. Using it in a driver for a private symbol can cause
a build error when it conflicts with ARCH usage of the same symbol.

Therefore rename pl330's "_start" to "pl330_start_thread" so that there
is no conflict and no build error.

drivers/dma/pl330.c:1053:13: error: '_start' redeclared as different kind of symbol
 1053 | static bool _start(struct pl330_thread *thrd)
      |             ^~~~~~
In file included from ../include/linux/interrupt.h:21,
                 from ../drivers/dma/pl330.c:18:
arch/riscv/include/asm/sections.h:11:13: note: previous declaration of '_start' with type 'char[]'
   11 | extern char _start[];
      |             ^~~~~~

Fixes: b7d861d93945 ("DMA: PL330: Merge PL330 driver into drivers/dma/")
Fixes: ae43b3289186 ("ARM: 8202/1: dmaengine: pl330: Add runtime Power Management support v12")
Signed-off-by: Randy Dunlap 
Cc: Jaswinder Singh 
Cc: Boojin Kim 
Cc: Krzysztof Kozlowski 
Cc: Russell King 
Cc: Vinod Koul 
Cc: dmaengine@vger.kernel.org
Cc: linux-riscv@lists.infradead.org
Link: https://lore.kernel.org/r/20230524045310.27923-1-rdunlap@infradead.org
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin

dmaengine: at_xdmac: do not enable all cyclic channels

2023-05-17T09:35:54+00:00

[ Upstream commit f8435befd81dd85b7b610598551fadf675849bc1 ]

Do not global enable all the cyclic channels in at_xdmac_resume(). Instead
save the global status in at_xdmac_suspend() and re-enable the cyclic
channel only if it was active before suspend.

Fixes: e1f7c9eee707 ("dmaengine: at_xdmac: creation of the atmel eXtended DMA Controller driver")
Signed-off-by: Claudiu Beznea 
Link: https://lore.kernel.org/r/20230214151827.1050280-6-claudiu.beznea@microchip.com
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin

dmaengine: dw-edma: Fix to enable to issue dma request on DMA processing

2023-05-17T09:35:54+00:00

[ Upstream commit 970b17dfe264a9085ba4e593730ecfd496b950ab ]

The issue_pending request is ignored while driver is processing a DMA
request. Fix to issue the pending requests on any dma channel status.

Fixes: e63d79d1ffcd ("dmaengine: Add Synopsys eDMA IP core driver")
Signed-off-by: Shunsuke Mie 
Link: https://lore.kernel.org/r/20230411101758.438472-2-mie@igel.co.jp
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin

dmaengine: dw-edma: Fix to change for continuous transfer

2023-05-17T09:35:54+00:00

[ Upstream commit a251994a441ee0a69ba7062c8cd2d08ead3db379 ]

The dw-edma driver stops after processing a DMA request even if a request
remains in the issued queue, which is not the expected behavior. The DMA
engine API requires continuous processing.

Add a trigger to start after one processing finished if there are requests
remain.

Fixes: e63d79d1ffcd ("dmaengine: Add Synopsys eDMA IP core driver")
Signed-off-by: Shunsuke Mie 
Link: https://lore.kernel.org/r/20230411101758.438472-1-mie@igel.co.jp
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin

dmaengine: mv_xor_v2: Fix an error code.

2023-05-17T09:35:53+00:00

[ Upstream commit 827026ae2e56ec05ef1155661079badbbfc0b038 ]

If the probe is deferred, -EPROBE_DEFER should be returned, not
+EPROBE_DEFER.

Fixes: 3cd2c313f1d6 ("dmaengine: mv_xor_v2: Fix clock resource by adding a register clock")
Signed-off-by: Christophe JAILLET 
Link: https://lore.kernel.org/r/201170dff832a3c496d125772e10070cd834ebf2.1679814350.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin 
Signed-off-by: Greg Kroah-Hartman

dmaengine: sh: rcar-dmac: Check for error num after dma_set_max_seg_size

2023-03-03T10:41:48+00:00

commit da2ad87fba0891576aadda9161b8505fde81a84d upstream.

As the possible failure of the dma_set_max_seg_size(), it should be
better to check the return value of the dma_set_max_seg_size().

Fixes: 97d49c59e219 ("dmaengine: rcar-dmac: set scatter/gather max segment size")
Reported-by: Geert Uytterhoeven 
Signed-off-by: Jiasheng Jiang 
Reviewed-by: Geert Uytterhoeven 
Link: https://lore.kernel.org/r/20220111011239.452837-1-jiasheng@iscas.ac.cn
Signed-off-by: Vinod Koul 
Signed-off-by: Greg Kroah-Hartman 
Signed-off-by: Nobuhiro Iwamatsu (CIP)

dmaengine: imx-sdma: Fix a possible memory leak in sdma_transfer_init

2023-02-06T06:52:48+00:00

[ Upstream commit 1417f59ac0b02130ee56c0c50794b9b257be3d17 ]

If the function sdma_load_context() fails, the sdma_desc will be
freed, but the allocated desc->bd is forgot to be freed.

We already met the sdma_load_context() failure case and the log as
below:
[ 450.699064] imx-sdma 30bd0000.dma-controller: Timeout waiting for CH0 ready
...

In this case, the desc->bd will not be freed without this change.

Signed-off-by: Hui Wang 
Reviewed-by: Sascha Hauer 
Link: https://lore.kernel.org/r/20221130090800.102035-1-hui.wang@canonical.com
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin

dmaengine: xilinx_dma: call of_node_put() when breaking out of for_each_child_of_node()

2023-02-06T06:52:40+00:00

[ Upstream commit 596b53ccc36a546ab28e8897315c5b4d1d5a0200 ]

Since for_each_child_of_node() will increase the refcount of node, we need
to call of_node_put() manually when breaking out of the iteration.

Fixes: 9cd4360de609 ("dma: Add Xilinx AXI Video Direct Memory Access Engine driver support")
Signed-off-by: Liu Shixin 
Acked-by: Peter Korsgaard 
Link: https://lore.kernel.org/r/20221122021612.1908866-1-liushixin2@huawei.com
Signed-off-by: Vinod Koul 
Signed-off-by: Sasha Levin

dmaengine: xilinx_dma: Fix devm_platform_ioremap_resource error handling

2023-02-06T06:52:39+00:00

[ Upstream commit 91df7751eb890e970afc08f50b8f0fa5ea39e03d ]

Add missing cleanup in devm_platform_ioremap_resource().
When probe fails remove dma channel resources and disable clocks in
accordance with the order of resources allocated .

Signed-off-by: Swati Agarwal 
Link: https://lore.kernel.org/r/20220817061125.4720-2-swati.agarwal@xilinx.com
Signed-off-by: Vinod Koul 
Stable-dep-of: 596b53ccc36a ("dmaengine: xilinx_dma: call of_node_put() when breaking out of for_each_child_of_node()")
Signed-off-by: Sasha Levin

dmaengine: xilinx_dma: use devm_platform_ioremap_resource()

2023-02-06T06:52:39+00:00

[ Upstream commit a8bd47542863947e2433db35558477caf0d89995 ]

Replace the chain of platform_get_resource() and devm_ioremap_resource()
with devm_platform_ioremap_resource(). It simplifies the flow and there
is no functional change.

Fixes below cocinelle warning-
WARNING: Use devm_platform_ioremap_resource for xdev -> regs

Signed-off-by: Radhey Shyam Pandey 
Link: https://lore.kernel.org/r/1569495060-18117-4-git-send-email-radhey.shyam.pandey@xilinx.com
Signed-off-by: Vinod Koul 
Stable-dep-of: 596b53ccc36a ("dmaengine: xilinx_dma: call of_node_put() when breaking out of for_each_child_of_node()")
Signed-off-by: Sasha Levin