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

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>

diff --git a/drivers/dma/ti/edma.c b/drivers/dma/ti/edma.c
index f1f920861fa9d8937a34bc29906778720a8dbfd8..5f8d2e93ff3fb516ea6374e007110b057377f11e 100644 (file)
--- 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) {