From: Dan Carpenter dan.carpenter@linaro.org
[ Upstream commit 632c60ecd25dbacee54d5581fe3aeb834b57010a ]
This loop is freeing "clk" so it needs to use list_for_each_entry_safe(). Otherwise it dereferences a freed variable to get the next item on the loop.
Fixes: 77d8f3068c63 ("clk: imx: scu: add two cells binding support") Signed-off-by: Dan Carpenter dan.carpenter@linaro.org Reviewed-by: Abel Vesa abel.vesa@linaro.org Link: https://lore.kernel.org/r/0793fbd1-d2b5-4ec2-9403-3c39343a3e2d@kili.mountain Signed-off-by: Abel Vesa abel.vesa@linaro.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/clk/imx/clk-scu.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c index dc933fd5d5a0f..1cee88b073fa2 100644 --- a/drivers/clk/imx/clk-scu.c +++ b/drivers/clk/imx/clk-scu.c @@ -702,11 +702,11 @@ struct clk_hw *imx_clk_scu_alloc_dev(const char *name,
void imx_clk_scu_unregister(void) { - struct imx_scu_clk_node *clk; + struct imx_scu_clk_node *clk, *n; int i;
for (i = 0; i < IMX_SC_R_LAST; i++) { - list_for_each_entry(clk, &imx_scu_clks[i], node) { + list_for_each_entry_safe(clk, n, &imx_scu_clks[i], node) { clk_hw_unregister(clk->hw); kfree(clk); }