Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933292AbbHXNW0 (ORCPT ); Mon, 24 Aug 2015 09:22:26 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:57126 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932388AbbHXNWR (ORCPT ); Mon, 24 Aug 2015 09:22:17 -0400 From: Roger Quadros To: , , , CC: , , , , , , , , , Roger Quadros Subject: [PATCH v4 11/13] usb: core: hub: Notify OTG fsm when A device sets b_hnp_enable Date: Mon, 24 Aug 2015 16:21:22 +0300 Message-ID: <1440422484-4737-12-git-send-email-rogerq@ti.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1440422484-4737-1-git-send-email-rogerq@ti.com> References: <1440422484-4737-1-git-send-email-rogerq@ti.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1592 Lines: 49 This is the a_set_b_hnp_enable flag in the OTG state machine diagram and must be set when the A-Host has successfully set the b_hnp_enable feature of the OTG-B-Peripheral attached to it. When this bit changes we kick our OTG FSM to make note of the change and act accordingly. Signed-off-by: Roger Quadros --- drivers/usb/core/hub.c | 10 +++++++++- 1 file changed, 9 insertions(+), 1 deletion(-) diff --git a/drivers/usb/core/hub.c b/drivers/usb/core/hub.c index 431839b..3993168 100644 --- a/drivers/usb/core/hub.c +++ b/drivers/usb/core/hub.c @@ -2271,6 +2271,9 @@ static int usb_enumerate_device_otg(struct usb_device *udev) "can't set HNP mode: %d\n", err); bus->b_hnp_enable = 0; + } else { + /* notify OTG fsm about a_set_b_hnp_enable */ + usb_otg_kick_fsm(udev->bus->controller); } } } @@ -4238,8 +4241,13 @@ hub_port_init (struct usb_hub *hub, struct usb_device *udev, int port1, */ if (!hdev->parent) { delay = HUB_ROOT_RESET_TIME; - if (port1 == hdev->bus->otg_port) + if (port1 == hdev->bus->otg_port) { hdev->bus->b_hnp_enable = 0; +#ifdef CONFIG_USB_OTG + /* notify OTG fsm about a_set_b_hnp_enable change */ + usb_otg_kick_fsm(hdev->bus->controller); +#endif + } } /* Some low speed devices have problems with the quick delay, so */ -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/