In function rockchip_usb3_phy_power_on(), local variable "val" could be uninitialized if function regmap_read() returns -EINVAL. However, this value is directly used in later context. This is potentially unsafe.
Signed-off-by: Yizhuo <[email protected]> --- drivers/phy/rockchip/phy-rockchip-typec.c | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) diff --git a/drivers/phy/rockchip/phy-rockchip-typec.c b/drivers/phy/rockchip/phy-rockchip-typec.c index a958c9bced01..b1e24418cb2d 100644 --- a/drivers/phy/rockchip/phy-rockchip-typec.c +++ b/drivers/phy/rockchip/phy-rockchip-typec.c @@ -716,7 +716,10 @@ static int rockchip_usb3_phy_power_on(struct phy *phy) /* wait TCPHY for pipe ready */ for (timeout = 0; timeout < 100; timeout++) { - regmap_read(tcphy->grf_regs, reg->offset, &val); + ret = regmap_read(tcphy->grf_regs, reg->offset, &val); + if (ret) + goto unlock_ret; + if (!(val & BIT(reg->enable_bit))) { tcphy->mode |= new_mode & (MODE_DFP_USB | MODE_UFP_USB); goto unlock_ret; -- 2.17.1
