return -EINVAL;
}
- res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
- if (!res)
- return -ENXIO;
-
- if (res->start % 4 != 0 || resource_size(res) < 4) {
- dev_err(&pdev->dev,
- "address must be at least four bytes wide and 32-bit aligned\n");
- return -EINVAL;
- }
-
/* Allocate memory for the device structure (and zero it) */
priv = devm_kzalloc(&pdev->dev,
sizeof(struct timeriomem_rng_private), GFP_KERNEL);
platform_set_drvdata(pdev, priv);
+ priv->io_base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
+ if (IS_ERR(priv->io_base))
+ return PTR_ERR(priv->io_base);
+
+ if (res->start % 4 != 0 || resource_size(res) < 4) {
+ dev_err(&pdev->dev,
+ "address must be at least four bytes wide and 32-bit aligned\n");
+ return -EINVAL;
+ }
+
if (pdev->dev.of_node) {
int i;
priv->rng_ops.name = dev_name(&pdev->dev);
priv->rng_ops.read = timeriomem_rng_read;
- priv->io_base = devm_ioremap_resource(&pdev->dev, res);
- if (IS_ERR(priv->io_base)) {
- return PTR_ERR(priv->io_base);
- }
-
/* Assume random data is already available. */
priv->present = 1;
complete(&priv->completion);