* [PATCH] dmaengine: ti: edma: Add some null pointer checks to the edma_probe
@ 2024-01-18 3:19 Kunwu Chan
2024-01-22 16:25 ` Vinod Koul
0 siblings, 1 reply; 2+ messages in thread
From: Kunwu Chan @ 2024-01-18 3:19 UTC (permalink / raw)
To: peter.ujfalusi, vkoul; +Cc: dmaengine, linux-kernel, Kunwu Chan
devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.
Signed-off-by: Kunwu Chan <chentao@kylinos.cn>
---
drivers/dma/ti/edma.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c
index f1f920861fa9..5f8d2e93ff3f 100644
--- a/drivers/dma/ti/edma.c
+++ b/drivers/dma/ti/edma.c
@@ -2404,6 +2404,11 @@ static int edma_probe(struct platform_device *pdev)
if (irq > 0) {
irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s_ccint",
dev_name(dev));
+ if (!irq_name) {
+ ret = -ENOMEM;
+ goto err_disable_pm;
+ }
+
ret = devm_request_irq(dev, irq, dma_irq_handler, 0, irq_name,
ecc);
if (ret) {
@@ -2420,6 +2425,11 @@ static int edma_probe(struct platform_device *pdev)
if (irq > 0) {
irq_name = devm_kasprintf(dev, GFP_KERNEL, "%s_ccerrint",
dev_name(dev));
+ if (!irq_name) {
+ ret = -ENOMEM;
+ goto err_disable_pm;
+ }
+
ret = devm_request_irq(dev, irq, dma_ccerr_handler, 0, irq_name,
ecc);
if (ret) {
--
2.39.2
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2024-01-18 3:19 [PATCH] dmaengine: ti: edma: Add some null pointer checks to the edma_probe Kunwu Chan
2024-01-22 16:25 ` Vinod Koul
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