diff options
| author | Artur Petrosyan <Arthur.Petrosyan@synopsys.com> | 2021-04-16 15:46:58 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2021-04-22 12:55:33 +0300 |
| commit | b29b494bcc2e612e3abcd1b136db25433eaeee1d (patch) | |
| tree | ab8981f9aae455ff0b14b81eb93406dcfcd56e9d /drivers/usb/dwc2 | |
| parent | c363af9ce3db7e374b37e0509ccf31f8da4da404 (diff) | |
| download | linux-b29b494bcc2e612e3abcd1b136db25433eaeee1d.tar.xz | |
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: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Signed-off-by: Artur Petrosyan <Arthur.Petrosyan@synopsys.com>
Signed-off-by: Minas Harutyunyan <Minas.Harutyunyan@synopsys.com>
Link: https://lore.kernel.org/r/20210416124659.652CFA005C@mailhost.synopsys.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/dwc2')
| -rw-r--r-- | drivers/usb/dwc2/gadget.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c index 2f50f3e62caa..e6bb1bdb2760 100644 --- a/drivers/usb/dwc2/gadget.c +++ b/drivers/usb/dwc2/gadget.c @@ -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; |