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dmaengine: ti: edma: Add some null pointer checks to the edma_probe 

[ Upstream commit 6e2276203ac9ff10fc76917ec9813c660f627369 ]

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>
Link: https://lore.kernel.org/r/20240118031929.192192-1-chentao@kylinos.cn
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Kunwu Chan 2024-01-18 11:19:29 +08:00 committed by Greg Kroah-Hartman
parent 3e746c4e48
commit 9d508c8971
1 changed files with 10 additions and 0 deletions
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10
drivers/dma/ti/edma.c
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@ -2413,6 +2413,11 @@ 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) {
@ -2429,6 +2434,11 @@ 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) {