From: Shubhrajyoti Datta Date: Wed, 18 May 2022 05:53:14 +0000 (+0530) Subject: clk: zynqmp: Add a check for NULL pointer X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=6ab9810cfe6c8f3d8b8750c827d7870abd3751b9;p=linux.git clk: zynqmp: Add a check for NULL pointer Add a NULL pointer check as clk_hw_get_parent can return NULL. Signed-off-by: Shubhrajyoti Datta Link: https://lore.kernel.org/r/20220518055314.2486-1-shubhrajyoti.datta@xilinx.com Acked-by: Michal Simek Signed-off-by: Stephen Boyd --- diff --git a/drivers/clk/zynqmp/divider.c b/drivers/clk/zynqmp/divider.c index 05788d8325d4b..33a3b2a226595 100644 --- a/drivers/clk/zynqmp/divider.c +++ b/drivers/clk/zynqmp/divider.c @@ -120,10 +120,13 @@ static void zynqmp_get_divider2_val(struct clk_hw *hw, long error = LONG_MAX; unsigned long div1_prate; struct clk_hw *div1_parent_hw; + struct zynqmp_clk_divider *pdivider; struct clk_hw *div2_parent_hw = clk_hw_get_parent(hw); - struct zynqmp_clk_divider *pdivider = - to_zynqmp_clk_divider(div2_parent_hw); + if (!div2_parent_hw) + return; + + pdivider = to_zynqmp_clk_divider(div2_parent_hw); if (!pdivider) return;