[RFT,1/3] clk: imx: scu: fix kfree() of const memory on setting driver_override

Commit Message

Krzysztof Kozlowski Feb. 22, 2022, 1:27 p.m. UTC

The driver_override field from platform driver should not be initialized
from const memory because the core later kfree() it, for example when
driver_override is set via sysfs.

Fixes: 77d8f3068c63 ("clk: imx: scu: add two cells binding support")
Cc: <[e-mail]>
Signed-off-by: Krzysztof Kozlowski <[e-mail]>
---
 drivers/clk/imx/clk-scu.c | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

Patch

diff --git a/drivers/clk/imx/clk-scu.c b/drivers/clk/imx/clk-scu.c
index 083da31dc3ea..78ed40a0e3e2 100644
--- a/drivers/clk/imx/clk-scu.c
+++ b/drivers/clk/imx/clk-scu.c
@@ -683,7 +683,11 @@  struct clk_hw *imx_clk_scu_alloc_dev(const char *name,
 		return ERR_PTR(ret);
 	}
 
-	pdev->driver_override = "imx-scu-clk";
+	pdev->driver_override = kstrdup("imx-scu-clk", GFP_KERNEL);
+	if (!pdev->driver_override) {
+		platform_device_put(pdev);
+		return ERR_PTR(-ENOMEM);
+	}
 
 	ret = imx_clk_scu_attach_pd(&pdev->dev, rsrc_id);
 	if (ret)