On Fri, Dec 09, 2022 at 01:05:50PM +0300, Anastasia Belova wrote:
> 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@xxxxxxxxxxxxx>
> ---
> v2: Fix errors reported by kernel test robot <lkp@xxxxxxxxx>.
> v3: Merge several patches into single one.
> arch/mips/bcm63xx/clk.c | 2 ++
> 1 file changed, 2 insertions(+)
>
> 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);
> --
> 2.30.2
applied to mips-next.
Thomas.
--
Crap can work. Given enough thrust pigs will fly, but it's not necessarily a
good idea. [ RFC1925, 2.3 ]
