[PATCH 6.6 183/299] usb: dwc3: gadget: Dont disconnect if not started

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6.6-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>

commit b191a18cb5c47109ca696370a74a5062a70adfd0 upstream.

Don't go through soft-disconnection sequence if the controller hasn't
started. Otherwise, there will be timeout and warning reports from the
soft-disconnection flow.

Cc: stable@xxxxxxxxxxxxxxx
Fixes: 61a348857e86 ("usb: dwc3: gadget: Fix NULL pointer dereference in dwc3_gadget_suspend")
Reported-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Closes: https://lore.kernel.org/linux-usb/20240215233536.7yejlj3zzkl23vjd@xxxxxxxxxxxx/T/#mb0661cd5f9272602af390c18392b9a36da4f96e6
Tested-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
Signed-off-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Link: https://lore.kernel.org/r/e3be9b929934e0680a6f4b8f6eb11b18ae9c7e07.1708043922.git.Thinh.Nguyen@xxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/usb/dwc3/gadget.c |    5 +++++
 1 file changed, 5 insertions(+)

--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2650,6 +2650,11 @@ static int dwc3_gadget_soft_disconnect(s
 	int ret;
 
 	spin_lock_irqsave(&dwc->lock, flags);
+	if (!dwc->pullups_connected) {
+		spin_unlock_irqrestore(&dwc->lock, flags);
+		return 0;
+	}
+
 	dwc->connected = false;
 
 	/*






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