diff options
| author | Yang Yingliang <yangyingliang@huawei.com> | 2021-09-15 06:49:25 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-11-25 11:48:25 +0300 |
| commit | 06cfb4cb2241e704d72e3045cf4d7dfb567fbce0 (patch) | |
| tree | db38f766b6f5e68e478e324aa6629a30ab3608db /drivers | |
| parent | 9dd4b84d55216d004e14b56e90a49d5a60fb0b0a (diff) | |
| download | linux-06cfb4cb2241e704d72e3045cf4d7dfb567fbce0.tar.xz | |
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')
| -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 c968ecda42aa..7ed4cc348d99 100644 --- a/drivers/usb/musb/tusb6010.c +++ b/drivers/usb/musb/tusb6010.c @@ -1104,6 +1104,11 @@ 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 */ |