diff options
Diffstat (limited to 'freed-ora/tags/f16/3.1.8-2.fc16/ideapad-Check-if-acpi-already-handle-backlight.patch')
| -rw-r--r-- | freed-ora/tags/f16/3.1.8-2.fc16/ideapad-Check-if-acpi-already-handle-backlight.patch | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/freed-ora/tags/f16/3.1.8-2.fc16/ideapad-Check-if-acpi-already-handle-backlight.patch b/freed-ora/tags/f16/3.1.8-2.fc16/ideapad-Check-if-acpi-already-handle-backlight.patch new file mode 100644 index 000000000..713e005d8 --- /dev/null +++ b/freed-ora/tags/f16/3.1.8-2.fc16/ideapad-Check-if-acpi-already-handle-backlight.patch @@ -0,0 +1,31 @@ +From d4afc7754a60b885b63ef23fd194984e2d53a4e6 Mon Sep 17 00:00:00 2001 +From: Rene Bollford <xsecute@googlemail.com> +Date: Sun, 23 Oct 2011 09:56:42 +0200 +Subject: [PATCH] [PATCH] ideapad: Check if acpi already handle backlight + power to avoid a page fault + +This patch avoid a page fault in the ideapad-laptop extras when +turning the backlight power on or off. + +Signed-off-by: Rene Bolldorf <xsecute@googlemail.com> +Signed-off-by: Matthew Garrett <mjg@redhat.com> +--- + drivers/platform/x86/ideapad-laptop.c | 2 ++ + 1 files changed, 2 insertions(+), 0 deletions(-) + +diff --git a/drivers/platform/x86/ideapad-laptop.c b/drivers/platform/x86/ideapad-laptop.c +index 0c59541..0d94eec 100644 +--- a/drivers/platform/x86/ideapad-laptop.c ++++ b/drivers/platform/x86/ideapad-laptop.c +@@ -493,6 +493,8 @@ static void ideapad_backlight_notify_power(struct ideapad_private *priv) + unsigned long power; + struct backlight_device *blightdev = priv->blightdev; + ++ if (!blightdev) ++ return; + if (read_ec_data(ideapad_handle, 0x18, &power)) + return; + blightdev->props.power = power ? FB_BLANK_UNBLANK : FB_BLANK_POWERDOWN; +-- +1.7.6.4 + |
