dmaengine: fsl-edma: fix DMA channel leak in eDMAv4

commit 4ee632c82d2dbb9e2dcc816890ef182a151cbd99 upstream.

Allocate channel count consistently increases due to a missing source ID
(srcid) cleanup in the fsl_edma_free_chan_resources() function at imx93
eDMAv4.

Reset 'srcid' at fsl_edma_free_chan_resources().

Cc: stable@vger.kernel.org
Fixes: 72f5801a4e2b ("dmaengine: fsl-edma: integrate v3 support")
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231127214325.2477247-1-Frank.Li@nxp.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/dma/fsl-edma-common.c b/drivers/dma/fsl-edma-common.c
index 6a3abe5..b53f462 100644 (file)
--- a/drivers/dma/fsl-edma-common.c
+++ b/drivers/dma/fsl-edma-common.c
@@ -828,6 +828,7 @@ void fsl_edma_free_chan_resources(struct dma_chan *chan)
        dma_pool_destroy(fsl_chan->tcd_pool);
        fsl_chan->tcd_pool = NULL;
        fsl_chan->is_sw = false;
+       fsl_chan->srcid = 0;
 }
 
 void fsl_edma_cleanup_vchan(struct dma_device *dmadev)