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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>
This commit is contained in:
Yang Yingliang 2021-09-15 11:49:25 +08:00 committed by Greg Kroah-Hartman
parent ba9579f832
commit 3ee15f1af1
1 changed files with 5 additions and 0 deletions
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5
drivers/usb/musb/tusb6010.c
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@ -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 */