Re: [PATCH] clk: clocking-wizard: Fix Oops in clk_wzrd_register_divider()

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On 5/11/23 19:01, Dan Carpenter wrote:
Smatch detected this potential error pointer dereference
clk_wzrd_register_divider().  If devm_clk_hw_register() fails then
it sets "hw" to an error pointer and then dereferences it on the
next line.  Return the error directly instead.

Fixes: 5a853722eb32 ("staging: clocking-wizard: Add support for dynamic reconfiguration")
Signed-off-by: Dan Carpenter <dan.carpenter@xxxxxxxxxx>
---
  drivers/clk/xilinx/clk-xlnx-clock-wizard.c | 2 +-
  1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
index e83f104fad02..16df34f46280 100644
--- a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
+++ b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
@@ -525,7 +525,7 @@ static struct clk *clk_wzrd_register_divider(struct device *dev,
  	hw = &div->hw;
  	ret = devm_clk_hw_register(dev, hw);
  	if (ret)
-		hw = ERR_PTR(ret);
+		return ERR_PTR(ret);
return hw->clk;
  }

Reviewed-by: Michal Simek <michal.simek@xxxxxxx>

Thanks,
Michal



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