4 files changed, 25 insertions, 5 deletions

diff --git a/Documentation/sysctl/kernel.txt b/Documentation/sysctl/kernel.txt
index 9f11d36a8c10..b0c7ab93dcb9 100644
--- a/Documentation/sysctl/kernel.txt
+++ b/Documentation/sysctl/kernel.txt
@@ -16,6 +16,7 @@ before actually making adjustments.
 
 Currently, these files might (depending on your configuration)
 show up in /proc/sys/kernel:
+- acpi_video_flags
 - acct
 - core_pattern
 - core_uses_pid
@@ -57,6 +58,15 @@ show up in /proc/sys/kernel:
 
 ==============================================================
 
+acpi_video_flags:
+
+flags
+
+See Doc*/kernel/power/video.txt, it allows mode of video boot to be
+set during run time.
+
+==============================================================
+
 acct:
 
 highwater lowwater frequency
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 84d3d9f034ce..d3bc25e6d27d 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -427,7 +427,8 @@ extern int acpi_mp_config;
 extern struct acpi_table_mcfg_config *pci_mmcfg_config;
 extern int pci_mmcfg_config_num;
 
-extern int sbf_port ;
+extern int sbf_port;
+extern unsigned long acpi_video_flags;
 
 #else   /* !CONFIG_ACPI */
 
diff --git a/include/linux/sysctl.h b/include/linux/sysctl.h
index 32a4139c4ad8..0e92bf7ec28e 100644
--- a/include/linux/sysctl.h
+++ b/include/linux/sysctl.h
@@ -146,6 +146,7 @@ enum
         KERN_RANDOMIZE=68, /* int: randomize virtual address space */
         KERN_SETUID_DUMPABLE=69, /* int: behaviour of dumps for setuid core */
         KERN_SPIN_RETRY=70,     /* int: number of spinlock retries */
+        KERN_ACPI_VIDEO_FLAGS=71, /* int: flags for setting up video after ACPI sleep */
 };
 
 
diff --git a/kernel/sysctl.c b/kernel/sysctl.c
index 7654d55c47f5..ebc41bf22f1e 100644
--- a/kernel/sysctl.c
+++ b/kernel/sysctl.c
@@ -44,14 +44,12 @@
 #include <linux/limits.h>
 #include <linux/dcache.h>
 #include <linux/syscalls.h>
+#include <linux/nfs_fs.h>
+#include <linux/acpi.h>
 
 #include <asm/uaccess.h>
 #include <asm/processor.h>
 
-#ifdef CONFIG_ROOT_NFS
-#include <linux/nfs_fs.h>
-#endif
-
 #if defined(CONFIG_SYSCTL)
 
 /* External variables not in a header file. */
@@ -656,6 +654,16 @@ static ctl_table kern_table[] = {
                 .proc_handler   = &proc_dointvec,
         },
 #endif
+#ifdef CONFIG_ACPI_SLEEP
+        {
+                .ctl_name       = KERN_ACPI_VIDEO_FLAGS,
+                .procname       = "acpi_video_flags",
+                .data           = &acpi_video_flags,
+                .maxlen         = sizeof (unsigned long),
+                .mode           = 0644,
+                .proc_handler   = &proc_dointvec,
+        },
+#endif
         { .ctl_name = 0 }
 };