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clk: zynqmp: Add a check for NULL pointer

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[ Upstream commit 6ab9810cfe6c8f3d8b8750c827d7870abd3751b9 ]

Add a NULL pointer check as clk_hw_get_parent can return NULL.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@xilinx.com>
Link: https://lore.kernel.org/r/20220518055314.2486-1-shubhrajyoti.datta@xilinx.com
Acked-by: Michal Simek <michal.simek@amd.com>
Signed-off-by: Stephen Boyd <sboyd@kernel.org>
Stable-dep-of: 1fe15be1fb61 ("drivers: clk: zynqmp: update divider round rate logic")
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Shubhrajyoti Datta
2022-05-18 11:23:14 +05:30
committed by Greg Kroah-Hartman
parent 45b4ea38c9
commit af0b86199b
1 changed files with 5 additions and 2 deletions
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7
drivers/clk/zynqmp/divider.c
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@@ -119,10 +119,13 @@ static void zynqmp_get_divider2_val(struct clk_hw *hw,
long error = LONG_MAX; long error = LONG_MAX;
unsigned long div1_prate; unsigned long div1_prate;
struct clk_hw *div1_parent_hw; struct clk_hw *div1_parent_hw;
struct zynqmp_clk_divider *pdivider;
struct clk_hw *div2_parent_hw = clk_hw_get_parent(hw); 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) if (!pdivider)
return; return;