[PATCH] phy: Variable "val" in function miphy_osc_is_ready() could be uninitialized

[Yizhuo]

In function miphy_osc_is_ready(), local variable "val"
could be uninitalized. if function regmap_read() returns
-EINVAL. However, this value is used in if statement.
This is potentially unsafe.

Signed-off-by: Yizhuo <yzhai...@ucr.edu>
---
 drivers/phy/st/phy-miphy28lp.c | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/drivers/phy/st/phy-miphy28lp.c b/drivers/phy/st/phy-miphy28lp.c
index 213e2e15339c..40c7c0a611a0 100644
--- a/drivers/phy/st/phy-miphy28lp.c
+++ b/drivers/phy/st/phy-miphy28lp.c
@@ -835,7 +835,8 @@ static int miphy_osc_is_ready(struct miphy28lp_phy 
*miphy_phy)
 {
        struct miphy28lp_dev *miphy_dev = miphy_phy->phydev;
        unsigned long finish = jiffies + 5 * HZ;
-       u32 val;
+       u32 val = 0;
+       int ret;
 
        if (!miphy_phy->osc_rdy)
                return 0;
@@ -844,8 +845,10 @@ static int miphy_osc_is_ready(struct miphy28lp_phy 
*miphy_phy)
                return -EINVAL;
 
        do {
-               regmap_read(miphy_dev->regmap,
+               ret = regmap_read(miphy_dev->regmap,
                                miphy_phy->syscfg_reg[SYSCFG_STATUS], &val);
+               if (ret)
+                       return ret;
 
                if ((val & MIPHY_OSC_RDY) != MIPHY_OSC_RDY)
                        cpu_relax();
-- 
2.17.1