From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754601AbaICHkw (ORCPT ); Wed, 3 Sep 2014 03:40:52 -0400 Received: from top.free-electrons.com ([176.31.233.9]:43175 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1753837AbaICHkt (ORCPT ); Wed, 3 Sep 2014 03:40:49 -0400 From: Antoine Tenart To: balbi@ti.com, gregkh@linuxfoundation.org, Peter.Chen@freescale.com, kishon@ti.com, stern@rowland.harvard.edu Cc: Antoine Tenart , sergei.shtylyov@cogentembedded.com, yoshihiro.shimoda.uh@renesas.com, alexandre.belloni@free-electrons.com, thomas.petazzoni@free-electrons.com, zmxu@marvell.com, jszhang@marvell.com, linux-usb@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v4 6/9] usb: allow to supply the PHY in the drivers when using HCD Date: Wed, 3 Sep 2014 09:40:37 +0200 Message-Id: <1409730040-14200-7-git-send-email-antoine.tenart@free-electrons.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1409730040-14200-1-git-send-email-antoine.tenart@free-electrons.com> References: <1409730040-14200-1-git-send-email-antoine.tenart@free-electrons.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patch modify the generic code handling PHYs to allow them to be supplied from the drivers. This adds checks to ensure no PHY was already there when looking for one in the generic code. This also makes sure we do not modify its state in the generic HCD functions, it was provided by the driver. Signed-off-by: Antoine Tenart Acked-by: Alan Stern --- drivers/usb/core/hcd.c | 7 ++++--- 1 file changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/usb/core/hcd.c b/drivers/usb/core/hcd.c index 6619239baf6d..dc0e46e5e618 100644 --- a/drivers/usb/core/hcd.c +++ b/drivers/usb/core/hcd.c @@ -2646,7 +2646,7 @@ int usb_add_hcd(struct usb_hcd *hcd, } } - if (IS_ENABLED(CONFIG_GENERIC_PHY)) { + if (IS_ENABLED(CONFIG_GENERIC_PHY) && !hcd->phy) { struct phy *phy = phy_get(hcd->self.controller, "usb"); if (IS_ERR(phy)) { @@ -2666,6 +2666,7 @@ int usb_add_hcd(struct usb_hcd *hcd, goto err_phy; } hcd->phy = phy; + hcd->remove_phy = 1; } } @@ -2812,7 +2813,7 @@ err_allocate_root_hub: err_register_bus: hcd_buffer_destroy(hcd); err_create_buf: - if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->phy) { + if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) { phy_power_off(hcd->phy); phy_exit(hcd->phy); phy_put(hcd->phy); @@ -2896,7 +2897,7 @@ void usb_remove_hcd(struct usb_hcd *hcd) usb_deregister_bus(&hcd->self); hcd_buffer_destroy(hcd); - if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->phy) { + if (IS_ENABLED(CONFIG_GENERIC_PHY) && hcd->remove_phy && hcd->phy) { phy_power_off(hcd->phy); phy_exit(hcd->phy); phy_put(hcd->phy); -- 1.9.1