Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759059Ab3CGNWT (ORCPT ); Thu, 7 Mar 2013 08:22:19 -0500 Received: from arroyo.ext.ti.com ([192.94.94.40]:53824 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758608Ab3CGNWM (ORCPT ); Thu, 7 Mar 2013 08:22:12 -0500 From: Kishon Vijay Abraham I To: , , , , , , , , , , , , , , , , Subject: [PATCH v2 2/4] usb: dwc3: dwc3-omap: return -EPROBE_DEFER if probe has not yet executed Date: Thu, 7 Mar 2013 18:51:44 +0530 Message-ID: <1362662506-14823-3-git-send-email-kishon@ti.com> X-Mailer: git-send-email 1.7.10.4 In-Reply-To: <1362662506-14823-1-git-send-email-kishon@ti.com> References: <1362662506-14823-1-git-send-email-kishon@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: 2026 Lines: 65 return -EPROBE_DEFER from dwc3_omap_mailbox in dwc3-omap.c, if the probe of dwc3-omap has not yet been executed or failed. Signed-off-by: Kishon Vijay Abraham I --- drivers/usb/dwc3/dwc3-omap.c | 7 +++++-- include/linux/usb/dwc3-omap.h | 6 +++--- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/drivers/usb/dwc3/dwc3-omap.c b/drivers/usb/dwc3/dwc3-omap.c index 546f1fd..2fe9723f 100644 --- a/drivers/usb/dwc3/dwc3-omap.c +++ b/drivers/usb/dwc3/dwc3-omap.c @@ -138,11 +138,14 @@ static inline void dwc3_omap_writel(void __iomem *base, u32 offset, u32 value) writel(value, base + offset); } -void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) { u32 val; struct dwc3_omap *omap = _omap; + if (!omap) + return -EPROBE_DEFER; + switch (status) { case OMAP_DWC3_ID_GROUND: dev_dbg(omap->dev, "ID GND\n"); @@ -185,7 +188,7 @@ void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) dev_dbg(omap->dev, "ID float\n"); } - return; + return 0; } EXPORT_SYMBOL_GPL(dwc3_omap_mailbox); diff --git a/include/linux/usb/dwc3-omap.h b/include/linux/usb/dwc3-omap.h index 51eae14..5615f4d 100644 --- a/include/linux/usb/dwc3-omap.h +++ b/include/linux/usb/dwc3-omap.h @@ -19,11 +19,11 @@ enum omap_dwc3_vbus_id_status { }; #if (defined(CONFIG_USB_DWC3) || defined(CONFIG_USB_DWC3_MODULE)) -extern void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status); +extern int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status); #else -static inline void dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) +static inline int dwc3_omap_mailbox(enum omap_dwc3_vbus_id_status status) { - return; + return -ENODEV; } #endif -- 1.7.10.4 -- 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/