dma: edma.c: remove edma_desc leakage

geyslan · Vinod Koul · commit 2f6d8fad0a16 · 2013-10-11T07:31:47.000+05:30
Free memory allocated to edma_desc when failing to allocate slot.

Signed-off-by: Geyslan G. Bem &lt;geyslan@gmail.com&gt;
Signed-off-by: Vinod Koul &lt;vinod.koul@intel.com&gt;
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c
@@ -306,6 +306,7 @@ static struct dma_async_tx_descriptor *edma_prep_slave_sg(
 						EDMA_SLOT_ANY);
 			if (echan->slot[i] < 0) {
 				dev_err(dev, "Failed to allocate slot\n");
+				kfree(edesc);
 				return NULL;
 			}
 		}

Original file line number	Diff line number	Diff line change
`@@ -306,6 +306,7 @@ static struct dma_async_tx_descriptor *edma_prep_slave_sg(`
`306`	`306`	`EDMA_SLOT_ANY);`
`307`	`307`	`if (echan->slot[i] < 0) {`
`308`	`308`	`dev_err(dev, "Failed to allocate slot\n");`
	`309`	`+ kfree(edesc);`
`309`	`310`	`return NULL;`
`310`	`311`	`}`
`311`	`312`	`}`