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authorAnastasia Belova <abelova@astralinux.ru>2022-12-09 13:05:50 +0300
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2022-12-09 23:37:06 +0100
commitee9ef11bd2a59c2fefaa0959e5efcdf040d7c654 (patch)
treeb9cb6772a1b1531021bc673aa71e21a2c9a4944c /arch/mips
parent31495d4f6f1308d817a69f9228063a344c5c7ba4 (diff)
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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: e7300d04bd08 ("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>
Diffstat (limited to 'arch/mips')
-rw-r--r--arch/mips/bcm63xx/clk.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/mips/bcm63xx/clk.c b/arch/mips/bcm63xx/clk.c
index 6e6756e8fa0a..86a6e2590866 100644
--- a/arch/mips/bcm63xx/clk.c
+++ b/arch/mips/bcm63xx/clk.c
@@ -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);