Commit b7ca7520 authored Dec 09, 2022 by Anastasia Belova Committed by Greg Kroah-Hartman Jan 18, 2023

MIPS: BCM63xx: Add check for NULL for clk in clk_enable



[ Upstream commit ee9ef11bd2a59c2fefaa0959e5efcdf040d7c654 ]

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: e7300d04 ("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>

parent 14bb4bde

arch/mips/bcm63xx/clk.c

+2 −0

Original line number	Diff line number	Diff line
		@@ -361,6 +361,8 @@ static struct clk clk_periph = {
		*/
		int clk_enable(struct clk *clk)
		{
		if (!clk)
		return 0;
		mutex_lock(&clocks_mutex);
		clk_enable_unlocked(clk);
		mutex_unlock(&clocks_mutex);