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| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-09-15 11:49:25 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-26 10:47:14 +0100 |
| commit | 3ee15f1af17407be381bcf06a78fa60b471242dd (patch) | |
| tree | 0da3ff921131641dcf4461d00bf8fde5522fae14 /drivers/usb | |
| parent | ba9579f832bd6b4b31978b301aadb9c301d29000 (diff) | |
| download | linux-3ee15f1af17407be381bcf06a78fa60b471242dd.tar.gz linux-3ee15f1af17407be381bcf06a78fa60b471242dd.tar.bz2 linux-3ee15f1af17407be381bcf06a78fa60b471242dd.zip | |
usb: musb: tusb6010: check return value after calling platform_get_resource()
[ Upstream commit 14651496a3de6807a17c310f63c894ea0c5d858e ]
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/20210915034925.2399823-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/musb/tusb6010.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/usb/musb/tusb6010.c b/drivers/usb/musb/tusb6010.c index 4ecfbf6bb1fa..902507da8aa8 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -1103,6 +1103,11 @@ static int tusb_musb_init(struct musb *musb) /* dma address for async dma */ mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + if (!mem) { + pr_debug("no async dma resource?\n"); + ret = -ENODEV; + goto done; + } musb->async = mem->start; /* dma address for sync dma */ |