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MIPS: BCM63xx: Add check for NULL for clk in clk_enable
[ Upstream commitee9ef11bd2
] 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> Signed-off-by: Sasha Levin <sashal@kernel.org>
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@ -361,6 +361,8 @@ static struct clk clk_periph = {
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*/
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int clk_enable(struct clk *clk)
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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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clk_enable_unlocked(clk);
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mutex_unlock(&clocks_mutex);
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