Messages in this thread | | | From | Heiko Stübner <> | Subject | Re: [PATCH] clk: rockchip: Initialize hw to error to avoid undefined behavior | Date | Thu, 24 Sep 2020 08:41:36 +0200 |
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Am Donnerstag, 24. September 2020, 02:44:41 CEST schrieb Stephen Boyd: > 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") > Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
> --- > 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 e97fd3dfbae7..ccd5c270c213 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_hw *hw; > + struct clk_hw *hw = ERR_PTR(-ENOMEM); > struct clk_mux *mux = NULL; > struct clk_gate *gate = NULL; > struct clk_divider *div = NULL; > > base-commit: ca52a47af60f791b08a540a8e14d8f5751ee63e9 >
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