Messages in this thread Patch in this message | | | From | Sasha Levin <> | Subject | [PATCH AUTOSEL 4.14 11/12] net: sky2: initialize return of gm_phy_read | Date | Tue, 14 Jul 2020 10:39:53 -0400 |
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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 5046efdad5390..34ae4bf6e7162 100644 --- a/drivers/net/ethernet/marvell/sky2.c +++ b/drivers/net/ethernet/marvell/sky2.c @@ -215,7 +215,7 @@ static int __gm_phy_read(struct sky2_hw *hw, unsigned port, u16 reg, u16 *val) 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; } -- 2.25.1
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