[PATCH v2] usb: dwc3: xilinx: improve error handling for PM APIs

From: Radhey Shyam Pandey
Date: Tue Nov 21 2023 - 13:21:36 EST


From: Piyush Mehta <piyush.mehta@xxxxxxx>

Improve error handling for PM APIs in the dwc3_xlnx_probe function by
introducing devm_pm_runtime_enable and error label. Removed unnecessary
API pm_runtime_disable call in dwc3_xlnx_remove.

Signed-off-by: Piyush Mehta <piyush.mehta@xxxxxxx>
Signed-off-by: Radhey Shyam Pandey <radhey.shyam.pandey@xxxxxxx>
---
Changes for v2:
- Remove pm_runtime_enable() call.
---
drivers/usb/dwc3/dwc3-xilinx.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-xilinx.c b/drivers/usb/dwc3/dwc3-xilinx.c
index 5b7e92f476de..6095f4dee6ce 100644
--- a/drivers/usb/dwc3/dwc3-xilinx.c
+++ b/drivers/usb/dwc3/dwc3-xilinx.c
@@ -293,11 +293,15 @@ static int dwc3_xlnx_probe(struct platform_device *pdev)
goto err_clk_put;

pm_runtime_set_active(dev);
- pm_runtime_enable(dev);
+ ret = devm_pm_runtime_enable(dev);
+ if (ret < 0)
+ goto err_pm_set_suspended;
+
pm_suspend_ignore_children(dev, false);
- pm_runtime_get_sync(dev);
+ return pm_runtime_resume_and_get(dev);

- return 0;
+err_pm_set_suspended:
+ pm_runtime_set_suspended(dev);

err_clk_put:
clk_bulk_disable_unprepare(priv_data->num_clocks, priv_data->clks);
@@ -315,7 +319,6 @@ static void dwc3_xlnx_remove(struct platform_device *pdev)
clk_bulk_disable_unprepare(priv_data->num_clocks, priv_data->clks);
priv_data->num_clocks = 0;

- pm_runtime_disable(dev);
pm_runtime_put_noidle(dev);
pm_runtime_set_suspended(dev);
}
--
2.34.1