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ata: pata_pxa: Fix DMA channel leak on probe error

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commit fcaf242e7f upstream.

When dmaengine_slave_config() fails, the DMA channel acquired by
dma_request_chan() is not released before returning the error,
leaking the channel reference.

Fix by adding dma_release_channel() in the error path.

The ata_host_activate() error path already correctly releases the
DMA channel.

Cc: stable@vger.kernel.org
Fixes: 88622d80af ("ata: pata_pxa: dmaengine conversion")
Signed-off-by: Wentao Liang <vulab@iscas.ac.cn>
Reviewed-by: Niklas Cassel <cassel@kernel.org>
Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Wentao Liang
2026-07-24 16:03:44 +02:00
committed by Greg Kroah-Hartman
parent 07c05601a9
commit 566d5bf1e2
1 changed files with 1 additions and 0 deletions
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drivers/ata/pata_pxa.c
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@@ -287,6 +287,7 @@ static int pxa_ata_probe(struct platform_device *pdev)
ret = dmaengine_slave_config(data->dma_chan, &config);
if (ret < 0) {
dev_err(&pdev->dev, "dma configuration failed: %d\n", ret);
dma_release_channel(data->dma_chan);
return ret;
}