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

From: Piyush Mehta
Date: Tue Nov 07 2023 - 23:35:14 EST


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>
---
drivers/usb/dwc3/dwc3-xilinx.c | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/drivers/usb/dwc3/dwc3-xilinx.c b/drivers/usb/dwc3/dwc3-xilinx.c
index 5b7e92f476de..9cf26e9a1c3d 100644
--- a/drivers/usb/dwc3/dwc3-xilinx.c
+++ b/drivers/usb/dwc3/dwc3-xilinx.c
@@ -294,10 +294,15 @@ static int dwc3_xlnx_probe(struct platform_device *pdev)

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 +320,6 @@ 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);
}
--
2.25.1