Commit b29b494b authored by Artur Petrosyan's avatar Artur Petrosyan Committed by Greg Kroah-Hartman
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usb: dwc2: Reset DEVADDR after exiting gadget hibernation. 



Initially resetting device address was done in dwc2_hsotg_irq()
interrupt handler. However, when core is hibernated USB RESET
is not handled in dwc2_hsotg_irq() handler, instead USB RESET
interrupt is handled in dwc2_handle_gpwrdn_intr() handler.

- Added reset device address to zero when core exits from gadget
  hibernation.

Acked-by: default avatarMinas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: default avatarArtur Petrosyan <Arthur.Petrosyan@synopsys.com>
Signed-off-by: default avatarMinas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124659.652CFA005C@mailhost.synopsys.com


Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent c363af9c

drivers/usb/dwc2/gadget.c

+4 −0
Original line number Diff line number Diff line
@@ -5305,6 +5305,10 @@ int dwc2_gadget_exit_hibernation(struct dwc2_hsotg *hsotg, 
	dwc2_writel(hsotg, dr->dcfg, DCFG);

	dwc2_writel(hsotg, dr->dctl, DCTL);



	/* On USB Reset, reset device address to zero */

	if (reset)

		dwc2_clear_bit(hsotg, DCFG, DCFG_DEVADDR_MASK);



	/* De-assert Wakeup Logic */

	gpwrdn = dwc2_readl(hsotg, GPWRDN);

	gpwrdn &= ~GPWRDN_PMUACTV;