From: Prashanth K Date: Fri, 24 Feb 2023 05:46:58 +0000 (+0530) Subject: usb: dwc3: gadget: Change condition for processing suspend event X-Git-Tag: v6.1.37~1630 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=3c5fafc27c02ff8a3a71fa4b0db2444e6f9d94c1;p=platform%2Fkernel%2Flinux-starfive.git usb: dwc3: gadget: Change condition for processing suspend event [ Upstream commit 4decf4060ecfee1f7a710999fcd421645ac0c419 ] Currently we process the suspend interrupt event only if the device is in configured state. Consider a case where device is not configured and got suspend interrupt, in that case our gadget will still use 100mA as composite_suspend didn't happen. But battery charging specification (BC1.2) expects a downstream device to draw less than 2.5mA when unconnected OR suspended. Fix this by removing the condition for processing suspend event, and thus composite_resume would set vbus draw to 2. Fixes: 72704f876f50 ("dwc3: gadget: Implement the suspend entry event handler") Signed-off-by: Prashanth K Acked-by: Thinh Nguyen Link: https://lore.kernel.org/r/1677217619-10261-2-git-send-email-quic_prashk@quicinc.com Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c index 79627ee..d262237 100644 --- a/drivers/usb/dwc3/gadget.c +++ b/drivers/usb/dwc3/gadget.c @@ -4252,15 +4252,8 @@ static void dwc3_gadget_interrupt(struct dwc3 *dwc, break; case DWC3_DEVICE_EVENT_SUSPEND: /* It changed to be suspend event for version 2.30a and above */ - if (!DWC3_VER_IS_PRIOR(DWC3, 230A)) { - /* - * Ignore suspend event until the gadget enters into - * USB_STATE_CONFIGURED state. - */ - if (dwc->gadget->state >= USB_STATE_CONFIGURED) - dwc3_gadget_suspend_interrupt(dwc, - event->event_info); - } + if (!DWC3_VER_IS_PRIOR(DWC3, 230A)) + dwc3_gadget_suspend_interrupt(dwc, event->event_info); break; case DWC3_DEVICE_EVENT_SOF: case DWC3_DEVICE_EVENT_ERRATIC_ERROR: