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Date: Wed, 20 May 2020 15:14:16 +0100 From: Ben Hutchings <ben@...adent.org.uk> To: linux-kernel@...r.kernel.org, stable@...r.kernel.org CC: akpm@...ux-foundation.org, Denis Kirjanov <kda@...ux-powerpc.org>, "Sasha Levin" <sashal@...nel.org>, "Felipe Balbi" <balbi@...nel.org>, "Bin Liu" <b-liu@...com>, "Greg Kroah-Hartman" <gregkh@...uxfoundation.org> Subject: [PATCH 3.16 48/99] usb: dwc3: turn off VBUS when leaving host mode 3.16.84-rc1 review patch. If anyone has any objections, please let me know. ------------------ From: Bin Liu <b-liu@...com> commit 09ed259fac621634d51cd986aa8d65f035662658 upstream. 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: 5f94adfeed97 ("usb: dwc3: core: refactor mode initialization to its own function") Signed-off-by: Bin Liu <b-liu@...com> Signed-off-by: Felipe Balbi <balbi@...nel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> Signed-off-by: Sasha Levin <sashal@...nel.org> Signed-off-by: Ben Hutchings <ben@...adent.org.uk> --- drivers/usb/dwc3/core.c | 3 +++ 1 file changed, 3 insertions(+) --- a/drivers/usb/dwc3/core.c +++ b/drivers/usb/dwc3/core.c @@ -614,6 +614,9 @@ static void dwc3_core_exit_mode(struct d /* do nothing */ break; } + + /* de-assert DRVVBUS for HOST and OTG mode */ + dwc3_set_mode(dwc, DWC3_GCTL_PRTCAP_DEVICE); } #define DWC3_ALIGN_MASK (16 - 1)
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