summaryrefslogtreecommitdiff
diff options
context:
space:
mode:
authorYang Yingliang <yangyingliang@huawei.com>2021-06-10 20:49:58 +0800
committerTakashi Iwai <tiwai@suse.de>2021-06-12 09:31:13 +0200
commitbe471fe332f7f14aa6828010b220d7e6902b91a0 (patch)
tree11ff83c132a4653480c82ade24024ae0a90eab3e
parent01893553e67c768985dc1531fa89fb04aa5134ce (diff)
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: Yang Yingliang <yangyingliang@huawei.com> Link: https://lore.kernel.org/r/20210610124958.116142-1-yangyingliang@huawei.com Signed-off-by: Takashi Iwai <tiwai@suse.de>
-rw-r--r--sound/mips/snd-n64.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/sound/mips/snd-n64.c b/sound/mips/snd-n64.c
index e35e93157755..463a6fe589eb 100644
--- a/sound/mips/snd-n64.c
+++ b/sound/mips/snd-n64.c
@@ -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;