dmaengine: dw-edma: Initialize IRQ data before requesting IRQs

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dw_edma_irq_request() passes struct dw_edma_irq to request_irq() before
dw_edma_channel_setup() fills the back pointer. A shared interrupt can
therefore enter the handler with dw_irq->dw still NULL, leading to a
NULL pointer dereference.

Set the back pointer before installing each handler.

Fixes: e63d79d1ff ("dmaengine: Add Synopsys eDMA IP core driver")
Cc: stable@vger.kernel.org
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Signed-off-by: Koichiro Den <den@valinux.co.jp>
Link: https://patch.msgid.link/20260721062815.4117887-5-den@valinux.co.jp
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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Koichiro Den 2026-07-21 15:28:05 +09:00 • committed by Vinod Koul

parent c9c25b2f32

commit 647217abea

1 changed files with 2 additions and 1 deletions

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

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