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usb: dwc2: Update exit hibernation when port reset is asserted 

No need to check for "DWC2_POWER_DOWN_PARAM_HIBERNATION" param
as "hsotg->hibernated" flag is already enough for exiting from
hibernation mode.

- Removes checking of "DWC2_POWER_DOWN_PARAM_HIBERNATION" param.

- For code readability Hibernation exit code moved after
debug message print.

- Added "dwc2_exit_hibernation()" function error checking.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124651.51C8DA005C@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Artur Petrosyan 2021-04-16 16:46:50 +04:00 committed by Greg Kroah-Hartman
parent 7e25c20df4
commit c363af9ce3
1 changed files with 11 additions and 6 deletions
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17
drivers/usb/dwc2/hcd.c
View File

@ -3668,9 +3668,17 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
break;
case USB_PORT_FEAT_RESET:
if (hsotg->params.power_down == DWC2_POWER_DOWN_PARAM_HIBERNATION &&
hsotg->hibernated)
dwc2_exit_hibernation(hsotg, 0, 1, 1);
dev_dbg(hsotg->dev,
"SetPortFeature - USB_PORT_FEAT_RESET\n");
hprt0 = dwc2_read_hprt0(hsotg);
if (hsotg->hibernated) {
retval = dwc2_exit_hibernation(hsotg, 0, 1, 1);
if (retval)
dev_err(hsotg->dev,
"exit hibernation failed\n");
}
if (hsotg->in_ppd) {
retval = dwc2_exit_partial_power_down(hsotg, 1,
@ -3684,9 +3692,6 @@ static int dwc2_hcd_hub_control(struct dwc2_hsotg *hsotg, u16 typereq,
DWC2_POWER_DOWN_PARAM_NONE && hsotg->bus_suspended)
dwc2_host_exit_clock_gating(hsotg, 0);
hprt0 = dwc2_read_hprt0(hsotg);
dev_dbg(hsotg->dev,
"SetPortFeature - USB_PORT_FEAT_RESET\n");
pcgctl = dwc2_readl(hsotg, PCGCTL);
pcgctl &= ~(PCGCTL_ENBL_SLEEP_GATING | PCGCTL_STOPPCLK);
dwc2_writel(hsotg, pcgctl, PCGCTL);