From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from omzsmtpe02.verizonbusiness.com ([199.249.25.209]:5250 "EHLO omzsmtpe02.verizonbusiness.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932227AbdDDTeD (ORCPT ); Tue, 4 Apr 2017 15:34:03 -0400 From: alexander.levin@verizon.com To: "gregkh@linuxfoundation.org" CC: "stable@vger.kernel.org" Subject: [PATCH for 4.9 75/98] usb: musb: da8xx: Fix host mode suspend Date: Tue, 4 Apr 2017 19:32:30 +0000 Message-ID: <20170404193158.19041-76-alexander.levin@verizon.com> References: <20170404193158.19041-1-alexander.levin@verizon.com> In-Reply-To: <20170404193158.19041-1-alexander.levin@verizon.com> Content-Language: en-US Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Sender: stable-owner@vger.kernel.org List-ID: From: Alexandre Bailon [ Upstream commit 486fc20ac8391338a42b015801b846acda4db7b7 ] On da8xx, VBUS is not maintained during suspend when musb is in host mode. On resume, all the connected devices will be disconnected and then will be enumerated again. This happens because MUSB_DEVCTL is cleared during suspend. Use the quirk MUSB_PRESERVE_SESSION to preseve MUSB_DEVCTL during suspend. Signed-off-by: Alexandre Bailon Signed-off-by: Bin Liu Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin --- drivers/usb/musb/da8xx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/usb/musb/da8xx.c b/drivers/usb/musb/da8xx.c index bacee0f..a2f0dbe 100644 --- a/drivers/usb/musb/da8xx.c +++ b/drivers/usb/musb/da8xx.c @@ -434,7 +434,7 @@ static int da8xx_musb_exit(struct musb *musb) } =20 static const struct musb_platform_ops da8xx_ops =3D { - .quirks =3D MUSB_INDEXED_EP, + .quirks =3D MUSB_INDEXED_EP | MUSB_PRESERVE_SESSION, .init =3D da8xx_musb_init, .exit =3D da8xx_musb_exit, =20 --=20 2.9.3