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MIPS: BCM63xx: Add check for NULL for clk in clk_enable
Check clk for NULL before calling clk_enable_unlocked where clk
is dereferenced. There is such check in other implementations
of clk_enable.
Found by Linux Verification Center (linuxtesting.org) with SVACE.
Fixes: e7300d04bd
("MIPS: BCM63xx: Add support for the Broadcom BCM63xx family of SOCs.")
Signed-off-by: Anastasia Belova <abelova@astralinux.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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@ -361,6 +361,8 @@ static struct clk clk_periph = {
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*/
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*/
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int clk_enable(struct clk *clk)
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int clk_enable(struct clk *clk)
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{
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{
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if (!clk)
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return 0;
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mutex_lock(&clocks_mutex);
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mutex_lock(&clocks_mutex);
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clk_enable_unlocked(clk);
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clk_enable_unlocked(clk);
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mutex_unlock(&clocks_mutex);
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mutex_unlock(&clocks_mutex);
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