From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758764Ab2DYL2S (ORCPT ); Wed, 25 Apr 2012 07:28:18 -0400 Received: from va3ehsobe006.messaging.microsoft.com ([216.32.180.16]:13227 "EHLO va3outboundpool.messaging.microsoft.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758680Ab2DYL2Q (ORCPT ); Wed, 25 Apr 2012 07:28:16 -0400 X-SpamScore: 3 X-BigFish: VS3(zzzz1202h1082kzz8275dhz2dh2a8h668h839hd24he5bh) X-Forefront-Antispam-Report: CIP:70.37.183.190;KIP:(null);UIP:(null);IPV:NLI;H:mail.freescale.net;RD:none;EFVD:NLI From: Dong Aisheng To: CC: , , , Subject: [PATCH 1/2] pinctrl: support gpio request deferred probing Date: Wed, 25 Apr 2012 19:38:13 +0800 Message-ID: <1335353894-22096-1-git-send-email-b29396@freescale.com> X-Mailer: git-send-email 1.7.0.4 MIME-Version: 1.0 Content-Type: text/plain X-OriginatorOrg: freescale.com Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Dong Aisheng As pinctrl handles, it may be possible the pinctrl gpio ranges are still not got registered when user call pinctrl_gpio_request. Thus, add defer support for it too. Signed-off-by: Dong Aisheng --- drivers/pinctrl/core.c | 7 ++++--- 1 files changed, 4 insertions(+), 3 deletions(-) diff --git a/drivers/pinctrl/core.c b/drivers/pinctrl/core.c index 5cd5a5a..ea2412a 100644 --- a/drivers/pinctrl/core.c +++ b/drivers/pinctrl/core.c @@ -276,7 +276,8 @@ pinctrl_match_gpio_range(struct pinctrl_dev *pctldev, unsigned gpio) * * Find the pin controller handling a certain GPIO pin from the pinspace of * the GPIO subsystem, return the device and the matching GPIO range. Returns - * negative if the GPIO range could not be found in any device. + * -EPROBE_DEFER if the GPIO range could not be found in any device since it + * may still have not been registered. */ static int pinctrl_get_device_gpio_range(unsigned gpio, struct pinctrl_dev **outdev, @@ -296,7 +297,7 @@ static int pinctrl_get_device_gpio_range(unsigned gpio, } } - return -EINVAL; + return -EPROBE_DEFER; } /** @@ -382,7 +383,7 @@ int pinctrl_request_gpio(unsigned gpio) ret = pinctrl_get_device_gpio_range(gpio, &pctldev, &range); if (ret) { mutex_unlock(&pinctrl_mutex); - return -EINVAL; + return ret; } /* Convert to the pin controllers number space */ -- 1.7.0.4