uio: uio_dmem_genirq: check the return value of devm_kasprintf()

devm_kasprintf() can fail so check its return value and bail-out on no
memory.

Fixes: 52e2dc2ce2d8 ("uio: Convert a few more users to using %pOFn instead of device_node.name")
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Link: https://lore.kernel.org/r/20241202181703.28546-1-brgl@bgdev.pl
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/uio/uio_dmem_genirq.c b/drivers/uio/uio_dmem_genirq.c
index c70dd81bfc61fd26851335f67eb356d066aaa97d..31aa75110ba5916a1c2f289e080b7e55b2007e63 100644 (file)
--- a/drivers/uio/uio_dmem_genirq.c
+++ b/drivers/uio/uio_dmem_genirq.c
@@ -167,6 +167,8 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
                }
                uioinfo->name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%pOFn",
                                               pdev->dev.of_node);
+               if (!uioinfo->name)
+                       return -ENOMEM;
                uioinfo->version = "devicetree";
        }