diff options
| author | Shang XiaoJing <shangxiaojing@huawei.com> | 2022-11-25 05:12:22 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-01-12 21:13:35 +0300 |
| commit | 17eee264ef386ef30a69dd70e36f29893b85c170 (patch) | |
| tree | fcbe688d5ce747f3a0e398519b68fc46d056aee9 | |
| parent | 7124c93887cc4e6c5b48920f83115e4a5892e870 (diff) | |
| download | linux-17eee264ef386ef30a69dd70e36f29893b85c170.tar.xz | |
phy: usb: sunplus: Fix potential null-ptr-deref in sp_usb_phy_probe()
sp_usb_phy_probe() will call platform_get_resource_byname() that may fail
and return NULL. devm_ioremap() will use usbphy->moon4_res_mem->start as
input, which may causes null-ptr-deref. Check the ret value of
platform_get_resource_byname() to avoid the null-ptr-deref.
Fixes: 99d9ccd97385 ("phy: usb: Add USB2.0 phy driver for Sunplus SP7021")
Signed-off-by: Shang XiaoJing <shangxiaojing@huawei.com>
Link: https://lore.kernel.org/r/20221125021222.25687-1-shangxiaojing@huawei.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/phy/sunplus/phy-sunplus-usb2.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/phy/sunplus/phy-sunplus-usb2.c b/drivers/phy/sunplus/phy-sunplus-usb2.c index e827b79f6d49..56de41091d63 100644 --- a/drivers/phy/sunplus/phy-sunplus-usb2.c +++ b/drivers/phy/sunplus/phy-sunplus-usb2.c @@ -254,6 +254,9 @@ static int sp_usb_phy_probe(struct platform_device *pdev) return PTR_ERR(usbphy->phy_regs); usbphy->moon4_res_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "moon4"); + if (!usbphy->moon4_res_mem) + return -EINVAL; + usbphy->moon4_regs = devm_ioremap(&pdev->dev, usbphy->moon4_res_mem->start, resource_size(usbphy->moon4_res_mem)); if (!usbphy->moon4_regs) |