| Message ID | 20210525044732.31660-1-jackp@codeaurora.org |
|---|---|
| State | New |
| Headers | show |
| Series | [5.9] usb: dwc3: gadget: Enable suspend events | expand |
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index e822ba03d3cc..0fb4b29a2962 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -2112,6 +2112,10 @@ static void dwc3_gadget_enable_irq(struct dwc3 *dwc) if (DWC3_VER_IS_PRIOR(DWC3, 250A)) reg |= DWC3_DEVTEN_ULSTCNGEN; + /* On 2.30a and above this bit enables U3/L2-L1 Suspend Events */ + if (!DWC3_VER_IS_PRIOR(DWC3, 230A)) + reg |= DWC3_DEVTEN_EOPFEN; + dwc3_writel(dwc->regs, DWC3_DEVTEN, reg); }
commit d1d90dd27254c44d087ad3f8b5b3e4fff0571f45 upstream. commit 72704f876f50 ("dwc3: gadget: Implement the suspend entry event handler") introduced (nearly 5 years ago!) an interrupt handler for U3/L1-L2 suspend events. The problem is that these events aren't currently enabled in the DEVTEN register so the handler is never even invoked. Fix this simply by enabling the corresponding bit in dwc3_gadget_enable_irq() using the same revision check as found in the handler. Fixes: 72704f876f50 ("dwc3: gadget: Implement the suspend entry event handler") Acked-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Jack Pham <jackp@codeaurora.org> Cc: stable <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20210428090111.3370-1-jackp@codeaurora.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> --- drivers/usb/dwc3/gadget.c | 4 ++++ 1 file changed, 4 insertions(+)