3 files changed, 30 insertions, 32 deletions

diff --git a/drivers/video/backlight/backlight.c b/drivers/video/backlight/backlight.c
index bddc8b17a4d8..288318ad21dd 100644
--- a/drivers/video/backlight/backlight.c
+++ b/drivers/video/backlight/backlight.c
@@ -164,18 +164,10 @@ static ssize_t brightness_show(struct device *dev,
 	return sprintf(buf, "%d\n", bd->props.brightness);
 }
 
-static ssize_t brightness_store(struct device *dev,
-		struct device_attribute *attr, const char *buf, size_t count)
+int backlight_device_set_brightness(struct backlight_device *bd,
+				    unsigned long brightness)
 {
-	int rc;
-	struct backlight_device *bd = to_backlight_device(dev);
-	unsigned long brightness;
-
-	rc = kstrtoul(buf, 0, &brightness);
-	if (rc)
-		return rc;
-
-	rc = -ENXIO;
+	int rc = -ENXIO;
 
 	mutex_lock(&bd->ops_lock);
 	if (bd->ops) {
@@ -185,7 +177,7 @@ static ssize_t brightness_store(struct device *dev,
 			pr_debug("set brightness to %lu\n", brightness);
 			bd->props.brightness = brightness;
 			backlight_update_status(bd);
-			rc = count;
+			rc = 0;
 		}
 	}
 	mutex_unlock(&bd->ops_lock);
@@ -194,6 +186,23 @@ static ssize_t brightness_store(struct device *dev,
 
 	return rc;
 }
+EXPORT_SYMBOL(backlight_device_set_brightness);
+
+static ssize_t brightness_store(struct device *dev,
+		struct device_attribute *attr, const char *buf, size_t count)
+{
+	int rc;
+	struct backlight_device *bd = to_backlight_device(dev);
+	unsigned long brightness;
+
+	rc = kstrtoul(buf, 0, &brightness);
+	if (rc)
+		return rc;
+
+	rc = backlight_device_set_brightness(bd, brightness);
+
+	return rc ? rc : count;
+}
 static DEVICE_ATTR_RW(brightness);
 
 static ssize_t type_show(struct device *dev, struct device_attribute *attr,
@@ -380,7 +389,7 @@ struct backlight_device *backlight_device_register(const char *name,
 }
 EXPORT_SYMBOL(backlight_device_register);
 
-bool backlight_device_registered(enum backlight_type type)
+struct backlight_device *backlight_device_get_by_type(enum backlight_type type)
 {
 	bool found = false;
 	struct backlight_device *bd;
@@ -394,9 +403,9 @@ bool backlight_device_registered(enum backlight_type type)
 	}
 	mutex_unlock(&backlight_dev_list_mutex);
 
-	return found;
+	return found ? bd : NULL;
 }
-EXPORT_SYMBOL(backlight_device_registered);
+EXPORT_SYMBOL(backlight_device_get_by_type);
 
 /**
  * backlight_device_unregister - unregisters a backlight device object.
diff --git a/drivers/video/fbdev/Kconfig b/drivers/video/fbdev/Kconfig
index 983280e8d93f..e5a391aecde1 100644
--- a/drivers/video/fbdev/Kconfig
+++ b/drivers/video/fbdev/Kconfig
@@ -761,7 +761,7 @@ config FB_VESA
 
 config FB_EFI
 	bool "EFI-based Framebuffer Support"
-	depends on (FB = y) && X86 && EFI
+	depends on (FB = y) && !IA64 && EFI
 	select FB_CFB_FILLRECT
 	select FB_CFB_COPYAREA
 	select FB_CFB_IMAGEBLIT
diff --git a/drivers/video/fbdev/efifb.c b/drivers/video/fbdev/efifb.c
index 95d293b7445a..f4c045c0051c 100644
--- a/drivers/video/fbdev/efifb.c
+++ b/drivers/video/fbdev/efifb.c
@@ -6,16 +6,14 @@
  *
  */
 
-#include <linux/module.h>
 #include <linux/kernel.h>
+#include <linux/efi.h>
 #include <linux/errno.h>
 #include <linux/fb.h>
 #include <linux/platform_device.h>
 #include <linux/screen_info.h>
-#include <linux/dmi.h>
-#include <linux/pci.h>
 #include <video/vga.h>
-#include <asm/sysfb.h>
+#include <asm/efi.h>
 
 static bool request_mem_succeeded = false;
 
@@ -85,21 +83,13 @@ static struct fb_ops efifb_ops = {
 static int efifb_setup(char *options)
 {
 	char *this_opt;
-	int i;
 
 	if (options && *options) {
 		while ((this_opt = strsep(&options, ",")) != NULL) {
 			if (!*this_opt) continue;
 
-			for (i = 0; i < M_UNKNOWN; i++) {
-				if (efifb_dmi_list[i].base != 0 &&
-				    !strcmp(this_opt, efifb_dmi_list[i].optname)) {
-					screen_info.lfb_base = efifb_dmi_list[i].base;
-					screen_info.lfb_linelength = efifb_dmi_list[i].stride;
-					screen_info.lfb_width = efifb_dmi_list[i].width;
-					screen_info.lfb_height = efifb_dmi_list[i].height;
-				}
-			}
+			efifb_setup_from_dmi(&screen_info, this_opt);
+
 			if (!strncmp(this_opt, "base:", 5))
 				screen_info.lfb_base = simple_strtoul(this_opt+5, NULL, 0);
 			else if (!strncmp(this_opt, "stride:", 7))
@@ -338,5 +328,4 @@ static struct platform_driver efifb_driver = {
 	.remove = efifb_remove,
 };
 
-module_platform_driver(efifb_driver);
-MODULE_LICENSE("GPL");
+builtin_platform_driver(efifb_driver);