dmaengine: omap-dma: fix dma_pool resource leak in error paths

[ Upstream commit 2e1136acf8a8887c29f52e35a77b537309af321f ]

The dma_pool created by dma_pool_create() is not destroyed when
dma_async_device_register() or of_dma_controller_register() fails,
causing a resource leak in the probe error paths.

Add dma_pool_destroy() in both error paths to properly release the
allocated dma_pool resource.

Fixes: 7bedaa553760 ("dmaengine: add OMAP DMA engine driver")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Link: https://patch.msgid.link/20251103073018.643-1-vulab@iscas.ac.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/dma/ti/omap-dma.c b/drivers/dma/ti/omap-dma.c
index cf96cf915c0c7483a6edf3e46048c90b8fc43a76..efc9093707e5aeef00fc532a115a997a2f7ef787 100644 (file)
--- a/drivers/dma/ti/omap-dma.c
+++ b/drivers/dma/ti/omap-dma.c
@@ -1809,6 +1809,8 @@ static int omap_dma_probe(struct platform_device *pdev)
        if (rc) {
                pr_warn("OMAP-DMA: failed to register slave DMA engine device: %d\n",
                        rc);
+               if (od->ll123_supported)
+                       dma_pool_destroy(od->desc_pool);
                omap_dma_free(od);
                return rc;
        }
@@ -1824,6 +1826,8 @@ static int omap_dma_probe(struct platform_device *pdev)
                if (rc) {
                        pr_warn("OMAP-DMA: failed to register DMA controller\n");
                        dma_async_device_unregister(&od->ddev);
+                       if (od->ll123_supported)
+                               dma_pool_destroy(od->desc_pool);
                        omap_dma_free(od);
                }
        }