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clk: rockchip: Fix error return in phase clock registration 

The newly added clock notifier may return an error code but so far the
error output in the function would only return an error pointer from
registering the clock.

So when the clock notifier fails the clock would be unregistered but the
return would still be the clock pointer which could then not be
dereferenced correctly. So fix the error handling to prevent that.

Fixes: 60cf09e45f ("clk: rockchip: Restore the clock phase after the rate was changed")
Signed-off-by: Shawn Lin <shawn.lin@rock-chips.com>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
This commit is contained in:
Shawn Lin 2018-03-21 10:39:20 +08:00 committed by Heiko Stuebner
parent 570fda972b
commit 0d92d1802c
1 changed files with 4 additions and 2 deletions
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6
drivers/clk/rockchip/clk-mmc-phase.c
View File

@ -223,8 +223,10 @@ struct clk *rockchip_clk_register_mmc(const char *name,
mmc_clock->shift = shift;
clk = clk_register(NULL, &mmc_clock->hw);
if (IS_ERR(clk))
if (IS_ERR(clk)) {
ret = PTR_ERR(clk);
goto err_register;
}
mmc_clock->clk_rate_change_nb.notifier_call =
&rockchip_mmc_clk_rate_notify;
@ -237,5 +239,5 @@ err_notifier:
clk_unregister(clk);
err_register:
kfree(mmc_clock);
return clk;
return ERR_PTR(ret);
}