Commit be471fe3 authored by Yang Yingliang's avatar Yang Yingliang Committed by Takashi Iwai
Browse files

ALSA: n64: check return value after calling platform_get_resource() 



It will cause null-ptr-deref if platform_get_resource() returns NULL,
we need check the return value.

Signed-off-by: default avatarYang Yingliang <yangyingliang@huawei.com>
Link: https://lore.kernel.org/r/20210610124958.116142-1-yangyingliang@huawei.com


Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
parent 01893553

sound/mips/snd-n64.c

+4 −0
Original line number Diff line number Diff line
@@ -338,6 +338,10 @@ static int __init n64audio_probe(struct platform_device *pdev) 
	strcpy(card->longname, "N64 Audio");



	res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);

	if (!res) {

		err = -EINVAL;

		goto fail_dma_alloc;

	}

	if (devm_request_irq(&pdev->dev, res->start, n64audio_isr,

				IRQF_SHARED, "N64 Audio", priv)) {

		err = -EBUSY;