[PATCH 2/2] uio: uio_dmem_genirq: finalize conversion of probe to devm_ handlers

From: Alexandru Ardelean
Date: Fri Nov 20 2020 - 02:57:14 EST


This moves move pm_runtime_disable on a devm_add_action_or_reset() handler.
And with the use of the devm_uio_register_device() function, the remove
hook is no longer required.

Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
---
drivers/uio/uio_dmem_genirq.c | 28 ++++++++++------------------
1 file changed, 10 insertions(+), 18 deletions(-)

diff --git a/drivers/uio/uio_dmem_genirq.c b/drivers/uio/uio_dmem_genirq.c
index 72aa372d6ba6..6b5cfa5b0673 100644
--- a/drivers/uio/uio_dmem_genirq.c
+++ b/drivers/uio/uio_dmem_genirq.c
@@ -143,6 +143,13 @@ static int uio_dmem_genirq_irqcontrol(struct uio_info *dev_info, s32 irq_on)
return 0;
}

+static void uio_dmem_genirq_pm_disable(void *data)
+{
+ struct device *dev = data;
+
+ pm_runtime_disable(dev);
+}
+
static int uio_dmem_genirq_probe(struct platform_device *pdev)
{
struct uio_dmem_genirq_pdata *pdata = dev_get_platdata(&pdev->dev);
@@ -280,25 +287,11 @@ static int uio_dmem_genirq_probe(struct platform_device *pdev)
*/
pm_runtime_enable(&pdev->dev);

- ret = uio_register_device(&pdev->dev, priv->uioinfo);
- if (ret) {
- dev_err(&pdev->dev, "unable to register uio device\n");
- pm_runtime_disable(&pdev->dev);
+ ret = devm_add_action_or_reset(&pdev->dev, uio_dmem_genirq_pm_disable, &pdev->dev);
+ if (ret)
return ret;
- }
-
- platform_set_drvdata(pdev, priv);
- return 0;
-}
-
-static int uio_dmem_genirq_remove(struct platform_device *pdev)
-{
- struct uio_dmem_genirq_platdata *priv = platform_get_drvdata(pdev);
-
- uio_unregister_device(priv->uioinfo);
- pm_runtime_disable(&pdev->dev);

- return 0;
+ return devm_uio_register_device(&pdev->dev, priv->uioinfo);
}

static int uio_dmem_genirq_runtime_nop(struct device *dev)
@@ -332,7 +325,6 @@ MODULE_DEVICE_TABLE(of, uio_of_genirq_match);

static struct platform_driver uio_dmem_genirq = {
.probe = uio_dmem_genirq_probe,
- .remove = uio_dmem_genirq_remove,
.driver = {
.name = DRIVER_NAME,
.pm = &uio_dmem_genirq_dev_pm_ops,
--
2.27.0