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usb: dwc2: Allow exit partial power down in urb enqueue

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

Added exit from partial power down state to avoid port
reset issue and process upper layer request correctly.

Acked-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Link: https://lore.kernel.org/r/20210408094542.685BAA0094@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Artur Petrosyan 2021-04-08 13:45:41 +04:00 committed by Greg Kroah-Hartman
parent 4d4d99afa2
commit 75f43ac3c1
1 changed files with 7 additions and 0 deletions
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7
drivers/usb/dwc2/hcd.c
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@ -4633,6 +4633,13 @@ static int _dwc2_hcd_urb_enqueue(struct usb_hcd *hcd, struct urb *urb,
dwc2_dump_urb_info(hcd, urb, "urb_enqueue");
}
if (hsotg->in_ppd) {
retval = dwc2_exit_partial_power_down(hsotg, 0, true);
if (retval)
dev_err(hsotg->dev,
"exit partial_power_down failed\n");
}
if (!ep)
return -EINVAL;