From: Christophe JAILLET christophe.jaillet@wanadoo.fr
[ Upstream commit 5d15cbf63515c6183d2ed7c9dd0586b4db23ffb1 ]
'dma_request_chan()' calls should be balanced by a corresponding 'dma_release_channel()' call.
Add the missing call both in the error handling path of the probe function and in the remove function.
Fixes: ff65ffe46d28 ("mmc: Add Actions Semi Owl SoCs SD/MMC driver") Signed-off-by: Christophe JAILLET christophe.jaillet@wanadoo.fr Link: https://lore.kernel.org/r/20201209194202.54099-1-christophe.jaillet@wanadoo.... Signed-off-by: Ulf Hansson ulf.hansson@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/mmc/host/owl-mmc.c | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/drivers/mmc/host/owl-mmc.c b/drivers/mmc/host/owl-mmc.c index 53b81582f1afe..5490962dc8e53 100644 --- a/drivers/mmc/host/owl-mmc.c +++ b/drivers/mmc/host/owl-mmc.c @@ -640,7 +640,7 @@ static int owl_mmc_probe(struct platform_device *pdev) owl_host->irq = platform_get_irq(pdev, 0); if (owl_host->irq < 0) { ret = -EINVAL; - goto err_free_host; + goto err_release_channel; }
ret = devm_request_irq(&pdev->dev, owl_host->irq, owl_irq_handler, @@ -648,19 +648,21 @@ static int owl_mmc_probe(struct platform_device *pdev) if (ret) { dev_err(&pdev->dev, "Failed to request irq %d\n", owl_host->irq); - goto err_free_host; + goto err_release_channel; }
ret = mmc_add_host(mmc); if (ret) { dev_err(&pdev->dev, "Failed to add host\n"); - goto err_free_host; + goto err_release_channel; }
dev_dbg(&pdev->dev, "Owl MMC Controller Initialized\n");
return 0;
+err_release_channel: + dma_release_channel(owl_host->dma); err_free_host: mmc_free_host(mmc);
@@ -674,6 +676,7 @@ static int owl_mmc_remove(struct platform_device *pdev)
mmc_remove_host(mmc); disable_irq(owl_host->irq); + dma_release_channel(owl_host->dma); mmc_free_host(mmc);
return 0;