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Subject[PATCH 5.8 447/633] clk: rockchip: Initialize hw to error to avoid undefined behavior
Date
From: Stephen Boyd <sboyd@kernel.org>

[ Upstream commit b608f11d49ec671739604cc763248d8e8fadbbeb ]

We can get down to this return value from ERR_CAST() without
initializing hw. Set it to -ENOMEM so that we always return something
sane.

Fixes the following smatch warning:

drivers/clk/rockchip/clk-half-divider.c:228 rockchip_clk_register_halfdiv() error: uninitialized symbol 'hw'.
drivers/clk/rockchip/clk-half-divider.c:228 rockchip_clk_register_halfdiv() warn: passing zero to 'ERR_CAST'

Cc: Elaine Zhang <zhangqing@rock-chips.com>
Cc: Heiko Stuebner <heiko@sntech.de>
Fixes: 956060a52795 ("clk: rockchip: add support for half divider")
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/clk/rockchip/clk-half-divider.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/rockchip/clk-half-divider.c b/drivers/clk/rockchip/clk-half-divider.c
index b333fc28c94b6..37c858d689e0d 100644
--- a/drivers/clk/rockchip/clk-half-divider.c
+++ b/drivers/clk/rockchip/clk-half-divider.c
@@ -166,7 +166,7 @@ struct clk *rockchip_clk_register_halfdiv(const char *name,
unsigned long flags,
spinlock_t *lock)
{
- struct clk *clk;
+ struct clk *clk = ERR_PTR(-ENOMEM);
struct clk_mux *mux = NULL;
struct clk_gate *gate = NULL;
struct clk_divider *div = NULL;
--
2.25.1


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