From: Tom Rix trix@redhat.com
[ Upstream commit 28b18e4eb515af7c6661c3995c6e3c34412c2874 ]
clang static analysis flags this garbage return
drivers/net/ethernet/marvell/sky2.c:208:2: warning: Undefined or garbage value returned to caller [core.uninitialized.UndefReturn] return v; ^~~~~~~~
static inline u16 gm_phy_read( ... { u16 v; __gm_phy_read(hw, port, reg, &v); return v; }
__gm_phy_read can return without setting v.
So handle similar to skge.c's gm_phy_read, initialize v.
Signed-off-by: Tom Rix trix@redhat.com Reviewed-by: Andrew Lunn andrew@lunn.ch Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/net/ethernet/marvell/sky2.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/marvell/sky2.c b/drivers/net/ethernet/marvell/sky2.c index 8ba9eadc20791..3fb9cbdac3bf0 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -215,7 +215,7 @@ io_error:
static inline u16 gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg) { - u16 v; + u16 v = 0; __gm_phy_read(hw, port, reg, &v); return v; }