Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752812Ab1F3Lu4 (ORCPT ); Thu, 30 Jun 2011 07:50:56 -0400 Received: from adelie.canonical.com ([91.189.90.139]:43558 "EHLO adelie.canonical.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752723Ab1F3Luv (ORCPT ); Thu, 30 Jun 2011 07:50:51 -0400 From: Ike Panhc To: linux-kernel@vger.kernel.org, platform-driver-x86@vger.kernel.org Cc: Matthew Garrett , Corentin Chary Subject: [PATCH 2/3] ideapad: let camera_power node invisiable if no camera Date: Thu, 30 Jun 2011 19:50:47 +0800 Message-Id: <1309434647-4701-1-git-send-email-ike.pan@canonical.com> X-Mailer: git-send-email 1.7.4.1 In-Reply-To: <1309434584-4636-1-git-send-email-ike.pan@canonical.com> References: <1309434584-4636-1-git-send-email-ike.pan@canonical.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1463 Lines: 50 Signed-off-by: Ike Panhc --- drivers/platform/x86/ideapad-laptop.c | 18 ++++++++++++++++++ 1 files changed, 18 insertions(+), 0 deletions(-) diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index 42b9ba7..1612abd 100644 --- a/drivers/platform/x86/ideapad-laptop.c +++ b/drivers/platform/x86/ideapad-laptop.c @@ -38,6 +38,7 @@ #define CFG_BT_BIT (16) #define CFG_3G_BIT (17) #define CFG_WIFI_BIT (18) +#define CFG_CAMERA_BIT (19) struct ideapad_private { struct rfkill *rfk[IDEAPAD_RFKILL_DEV_NUM]; @@ -208,7 +209,24 @@ static struct attribute *ideapad_attributes[] = { NULL }; +static mode_t ideapad_is_visible(struct kobject *kobj, + struct attribute *attr, + int idx) +{ + struct device *dev = container_of(kobj, struct device, kobj); + struct ideapad_private *priv = dev_get_drvdata(dev); + bool supported; + + if (attr == &dev_attr_camera_power.attr) + supported = test_bit(CFG_CAMERA_BIT, &(priv->cfg)); + else + supported = true; + + return supported ? attr->mode : 0; +} + static struct attribute_group ideapad_attribute_group = { + .is_visible = ideapad_is_visible, .attrs = ideapad_attributes }; -- 1.7.4.1 -- 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/