| Message ID | 6df5d98c33407fca971d4318b1f48730130101a7.1618297800.git.Arthur.Petrosyan@synopsys.com (mailing list archive) |
|---|---|
| State | Accepted |
| Commit | 401411bbc4e62bcbcc020c2c458ecb90843140a8 |
| Headers | show |
| Series | [01/12] usb: dwc2: Add device clock gating support functions | expand |
diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c index b28b8cd45799..f8b819cfa80e 100644 --- a/drivers/usb/dwc2/platform.c +++ b/drivers/usb/dwc2/platform.c @@ -326,6 +326,15 @@ static int dwc2_driver_remove(struct platform_device *dev) "exit partial_power_down failed\n"); } + /* Exit clock gating when driver is removed. */ + if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_NONE && + hsotg->bus_suspended) { + if (dwc2_is_device_mode(hsotg)) + dwc2_gadget_exit_clock_gating(hsotg, 0); + else + dwc2_host_exit_clock_gating(hsotg, 0); + } + dwc2_debugfs_exit(hsotg); if (hsotg->hcd_enabled) dwc2_hcd_remove(hsotg);
When dwc2 core is in clock gating mode loading driver again causes driver fail. Because in that mode registers are not accessible. Added a flow of exiting clock gating mode to avoid the driver reload failure. Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com> --- drivers/usb/dwc2/platform.c | 9 +++++++++ 1 file changed, 9 insertions(+)