uio: uio_fsl_elbc_gpcm:: Add null pointer check to uio_fsl_elbc_gpcm_probe

[ Upstream commit d48fb15e6ad142e0577428a8c5028136e10c7b3d ]

devm_kasprintf() returns a pointer to dynamically allocated memory
which can be NULL upon failure.

Fixes: d57801c45f53e ("uio: uio_fsl_elbc_gpcm: use device-managed allocators")
Signed-off-by: Li Qiang <liqiang01@kylinos.cn>
Link: https://patch.msgid.link/20251015064020.56589-1-liqiang01@kylinos.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/uio/uio_fsl_elbc_gpcm.c b/drivers/uio/uio_fsl_elbc_gpcm.c
index 81454c3e2484c8558c46b93417b24641b69f37c4..338dd2aaabc871cafac0acffb9871bb72826ee61 100644 (file)
--- a/drivers/uio/uio_fsl_elbc_gpcm.c
+++ b/drivers/uio/uio_fsl_elbc_gpcm.c
@@ -384,6 +384,11 @@ 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) {
+               ret = -ENODEV;
+               goto out_err3;
+       }
+
        info->mem[0].addr = res.start;
        info->mem[0].size = resource_size(&res);
        info->mem[0].memtype = UIO_MEM_PHYS;
@@ -423,6 +428,8 @@ static int uio_fsl_elbc_gpcm_probe(struct platform_device *pdev)
 out_err2:
        if (priv->shutdown)
                priv->shutdown(info, true);
+
+out_err3:
        iounmap(info->mem[0].internal_addr);
        return ret;
 }