[PATCH] ARM: imx: Check return value of devm_kasprintf in imx_mmdc_perf_init

[Kunwu Chan]

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure. Ensure the allocation was successful
by checking the pointer validity.

Fixes: ebeb49f43c89 ("ARM: imx: Call ida_simple_remove() for ida_simple_get")
Signed-off-by: Kunwu Chan <chentao at kylinos.cn>
---
 arch/arm/mach-imx/mmdc.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/mach-imx/mmdc.c b/arch/arm/mach-imx/mmdc.c
index 2157493b78a9..7c471d6a851d 100644
--- a/arch/arm/mach-imx/mmdc.c
+++ b/arch/arm/mach-imx/mmdc.c
@@ -501,6 +501,10 @@ static int imx_mmdc_perf_init(struct platform_device *pdev, void __iomem *mmdc_b
 
 	name = devm_kasprintf(&pdev->dev,
 				GFP_KERNEL, "mmdc%d", ret);
+	if (!name) {
+		ret = -ENOMEM;
+		goto pmu_free;
+	}
 
 	pmu_mmdc->mmdc_ipg_clk = mmdc_ipg_clk;
 	pmu_mmdc->devtype_data = (struct fsl_mmdc_devtype_data *)of_id->data;
-- 
2.34.1