From: Prashanth K <quic_prashk@quicinc.com>
Date: Fri, 24 Feb 2023 11:16:58 +0530
Subject: [PATCH] usb: dwc3: gadget: Change condition for processing suspend
event
References: bsc#1012628
Patch-mainline: 6.3.2
Git-commit: 4decf4060ecfee1f7a710999fcd421645ac0c419
[ 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 <quic_prashk@quicinc.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/1677217619-10261-2-git-send-email-quic_prashk@quicinc.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Signed-off-by: Jiri Slaby <jslaby@suse.cz>
---
drivers/usb/dwc3/gadget.c | 11 ++---------
1 file changed, 2 insertions(+), 9 deletions(-)
diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 743186c2..3faac324 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -4262,15 +4262,8 @@ 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:
--
2.35.3