From a84511f7fbeb37e26aacb9c72f5a21ffc24e909e Mon Sep 17 00:00:00 2001 From: Ike Panhc Date: Thu, 30 Jun 2011 19:50:47 +0800 Subject: [PATCH] ideapad: let camera_power node invisiable if no camera Signed-off-by: Ike Panhc Signed-off-by: Matthew Garrett --- drivers/platform/x86/ideapad-laptop.c | 18 ++++++++++++++++++ 1 file changed, 18 insertions(+) diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c index 42b9ba7e903c..1612abde5188 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 }; -- 2.30.2