diff options
| author | Yang Yingliang | 2021-06-10 20:49:58 +0800 |
|---|---|---|
| committer | Takashi Iwai | 2021-06-12 09:31:13 +0200 |
| commit | be471fe332f7f14aa6828010b220d7e6902b91a0 (patch) | |
| tree | 11ff83c132a4653480c82ade24024ae0a90eab3e | |
| parent | 01893553e67c768985dc1531fa89fb04aa5134ce (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.c | 4 |
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; |