From 168cf0eca45b86014b8c2a17fcb0673ab1af809b Mon Sep 17 00:00:00 2001
From: "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>
Date: Thu, 22 Aug 2013 23:31:38 +0200
Subject: [PATCH] Revert "ACPI / video: Always call
acpi_video_init_brightness() on init"
Revert commit c04c697 (ACPI / video: Always call acpi_video_init_brightness()
on init), because it breaks eDP backlight at 1920x1080 on Acer Aspire S3
for Trevor Bortins.
References: https://bugs.freedesktop.org/show_bug.cgi?id=68355
Reported-and-bisected-by: Trevor Bortins <enabfluw@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
---
drivers/acpi/video.c | 11 +++--------
1 file changed, 3 insertions(+), 8 deletions(-)
diff --git a/drivers/acpi/video.c b/drivers/acpi/video.c
index e1284b8dc6ee..3270d3c8ba4e 100644
--- a/drivers/acpi/video.c
+++ b/drivers/acpi/video.c
@@ -908,9 +908,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
device->cap._DDC = 1;
}
- if (acpi_video_init_brightness(device))
- return;
-
if (acpi_video_backlight_support()) {
struct backlight_properties props;
struct pci_dev *pdev;
@@ -920,6 +917,9 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
static int count = 0;
char *name;
+ result = acpi_video_init_brightness(device);
+ if (result)
+ return;
name = kasprintf(GFP_KERNEL, "acpi_video%d", count);
if (!name)
return;
@@ -979,11 +979,6 @@ static void acpi_video_device_find_cap(struct acpi_video_device *device)
if (result)
printk(KERN_ERR PREFIX "Create sysfs link\n");
- } else {
- /* Remove the brightness object. */
- kfree(device->brightness->levels);
- kfree(device->brightness);
- device->brightness = NULL;
}
}