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dmaengine: dw-edma: Clear stale requests on termination

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terminate_all() can finish immediately when the channel is unconfigured,
paused, idle, or already stopped in hardware. A pending PAUSE request can
survive these paths and block issue_pending() even after termination.

Clear the request whenever termination leaves the channel idle. A running
channel keeps its STOP request until the interrupt handler consumes it.

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/20260717180639.2643243-7-den@valinux.co.jp
Signed-off-by: Vinod Koul <vkoul@kernel.org>
This commit is contained in:
Koichiro Den 2026-07-18 03:06:36 +09:00 committed by Vinod Koul
parent f7d1619f3e
commit c0d9c6275a
1 changed files with 2 additions and 0 deletions
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2
drivers/dma/dw-edma/dw-edma-core.c
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@ -292,6 +292,8 @@ static int dw_edma_device_terminate_all(struct dma_chan *dchan)
} else {
chan->request = EDMA_REQ_STOP;
}
if (chan->status == EDMA_ST_IDLE)
chan->request = EDMA_REQ_NONE;
return err;
}