[PATCH] uio: uio_fsl_elbc_gpcm: Add NULL check in the uio_fsl_elbc_gpcm_probe

[Henry Martin]

When devm_kasprintf() fails, it returns a NULL pointer. However, this return value is not properly checked in the function uio_fsl_elbc_gpcm_probe.

A NULL check should be added after the devm_kasprintf() to prevent potential NULL pointer dereference error.

Fixes: d57801c45f53e ("uio: uio_fsl_elbc_gpcm: use device-managed allocators")

Signed-off-by: Henry Martin <bsdhenrymartin@xxxxxxxxx>
---
 drivers/uio/uio_fsl_elbc_gpcm.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/uio/uio_fsl_elbc_gpcm.c b/drivers/uio/uio_fsl_elbc_gpcm.c
index 81454c3e2484..59ba1a2dcfe3 100644
--- a/drivers/uio/uio_fsl_elbc_gpcm.c
+++ b/drivers/uio/uio_fsl_elbc_gpcm.c
@@ -384,6 +384,10 @@ static int uio_fsl_elbc_gpcm_probe(struct platform_device *pdev)
 
 	/* set all UIO data */
 	info->mem[0].name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%pOFn", node);
+	if (!info->mem[0].name) {
+		dev_err(priv->dev, "devm_kasprintf failed for region name\n");
+		return -ENOMEM;
+	}
 	info->mem[0].addr = res.start;
 	info->mem[0].size = resource_size(&res);
 	info->mem[0].memtype = UIO_MEM_PHYS;
-- 
2.34.1