usb: dwc2: Allow exit hibernation in urb enqueue

When core is in hibernation state and an external
hub is connected, upper layer sends URB enqueue request,
which results in port reset issue.

- Added exit from hibernation state to avoid port
reset issue and process upper layer request properly.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124803.D1C1FA005F@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Artur Petrosyan 2021-04-16 16:48:02 +04:00 committed by Greg Kroah-Hartman
parent e358c2159c
commit c3595df7a6
1 changed files with 14 additions and 0 deletions

View File

@ -4631,12 +4631,26 @@ static int _dwc2_hcd_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
struct dwc2_qh *qh;
bool qh_allocated = false;
struct dwc2_qtd *qtd;
struct dwc2_gregs_backup *gr;
gr = &hsotg->gr_backup;
if (dbg_urb(urb)) {
dev_vdbg(hsotg->dev, "DWC OTG HCD URB Enqueue\n");
dwc2_dump_urb_info(hcd, urb, "urb_enqueue");
}
if (hsotg->hibernated) {
if (gr->gotgctl & GOTGCTL_CURMODE_HOST)
retval = dwc2_exit_hibernation(hsotg, 0, 0, 1);
else
retval = dwc2_exit_hibernation(hsotg, 0, 0, 0);
if (retval)
dev_err(hsotg->dev,
"exit hibernation failed.\n");
}
if (hsotg->in_ppd) {
retval = dwc2_exit_partial_power_down(hsotg, 0, true);
if (retval)