dmaengine: dw-edma: Serialize abort state updates

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dw_edma_abort_interrupt() drops vc.lock before changing request and
status. issue_pending() can acquire the lock in that small window,
observe the old busy state, and skip starting queued descriptors. Then
the abort handler overwrites the channel status as idle, leaving the new
descriptors stranded for good.

Keep descriptor completion and the state transition in the same critical
section.

Fixes: e63d79d1ff ("dmaengine: Add Synopsys eDMA IP core driver")
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Koichiro Den <den@valinux.co.jp>
Link: https://patch.msgid.link/20260717180639.2643243-4-den@valinux.co.jp
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Koichiro Den 2026-07-18 03:06:33 +09:00 • committed by Vinod Koul

parent 99109a51ef

commit dd80e259f6

1 changed files with 1 additions and 1 deletions

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drivers/dma/dw-edma/dw-edma-core.c

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