diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-09-15 11:49:25 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-09-21 16:26:49 +0200 |
| commit | 14651496a3de6807a17c310f63c894ea0c5d858e (patch) | |
| tree | 1677baee467a73f81cbba17489ac713d430a22c2 /drivers/usb/musb | |
| parent | c03d36995222400c1bbbb7245a233c4304cfc257 (diff) | |
usb: musb: tusb6010: 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/20210915034925.2399823-1-yangyingliang@huawei.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/musb')
| -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 c42937692207..e0347780907f 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 */ |