Re: [PATCH] dmaengine: ti: k3-udma: Fix a resource leak in an error handling path

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Hi,

On 1/24/21 9:09 AM, Christophe JAILLET wrote:
In 'dma_pool_create()', we return -ENOMEM, but don't release the resources
already allocated, as in all the other error handling paths.

Go to 'err_res_free' instead of returning directly.

Interesting that I only had error for the bcdma path...

Fixes: 017794739702 ("dmaengine: ti: k3-udma: Initial support for K3 BCDMA")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
---
This patch is not even compile tested.
I don't have the needed configuration.

No issue, that patch is trivial,

Acked-by: Peter Ujfalusi <peter.ujfalusi@xxxxxxxxx>

---
  drivers/dma/ti/k3-udma.c | 3 ++-
  1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c
index 8e3fd1119a77..96ad21869ba7 100644
--- a/drivers/dma/ti/k3-udma.c
+++ b/drivers/dma/ti/k3-udma.c
@@ -2447,7 +2447,8 @@ static int bcdma_alloc_chan_resources(struct dma_chan *chan)
  			dev_err(ud->ddev.dev,
  				"Descriptor pool allocation failed\n");
  			uc->use_dma_pool = false;
-			return -ENOMEM;
+			ret = -ENOMEM;
+			goto err_res_free;
  		}
uc->use_dma_pool = true;


--
Péter



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