usb: dwc3: turn off VBUS when leaving host mode

liubiin · gregkh · commit 09ed259fac62 · 2020-01-15T10:39:22.000+01:00
VBUS should be turned off when leaving the host mode. Set GCTL_PRTCAP to device mode in teardown to de-assert DRVVBUS pin to turn off VBUS power. Fixes: 5f94adf ("usb: dwc3: core: refactor mode initialization to its own function") Cc: stable@vger.kernel.org Signed-off-by: Bin Liu <b-liu@ti.com> Signed-off-by: Felipe Balbi <balbi@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
@@ -1246,6 +1246,9 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)
 		/* do nothing */
 		break;
 	}
+
+	/* de-assert DRVVBUS for HOST and OTG mode */
+	dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE);
 }
 
 static void dwc3_get_properties(struct dwc3 *dwc)

Original file line number	Diff line number	Diff line change
`@@ -1246,6 +1246,9 @@ static void dwc3_core_exit_mode(struct dwc3 *dwc)`
`1246`	`1246`	`/* do nothing */`
`1247`	`1247`	`break;`
`1248`	`1248`	`}`
	`1249`	`+`
	`1250`	`+ /* de-assert DRVVBUS for HOST and OTG mode */`
	`1251`	`+ dwc3_set_prtcap(dwc, DWC3_GCTL_PRTCAP_DEVICE);`
`1249`	`1252`	`}`
`1250`	`1253`
`1251`	`1254`	`static void dwc3_get_properties(struct dwc3 *dwc)`