This patch adds a call to s3c_hsotg_disconnect() from 'end session'
interrupt (GOTGINT_SES_END_DET) to correctly notify gadget subsystem
about unplugged usb cable. 'disconnected' interrupt (DISCONNINT) might
look a bit more suitable for this event, but it is asserted only in
host mode, so in device mode we need to use something else.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
drivers/usb/dwc2/gadget.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/usb/dwc2/gadget.c b/drivers/usb/dwc2/gadget.c
index 7b5856fadd93..119c8a3effc2 100644
--- a/drivers/usb/dwc2/gadget.c
+++ b/drivers/usb/dwc2/gadget.c
@@ -2279,6 +2279,12 @@ irq_retry:
dev_info(hsotg->dev, "OTGInt: %08x\n", otgint);
writel(otgint, hsotg->regs + GOTGINT);
+
+ if (otgint & GOTGINT_SES_END_DET) {
+ if (hsotg->gadget.speed != USB_SPEED_UNKNOWN)
+ s3c_hsotg_disconnect(hsotg);
+ hsotg->gadget.speed = USB_SPEED_UNKNOWN;
+ }
}
if (gintsts & GINTSTS_SESSREQINT) {
--
1.9.2
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