[PATCH] suspend-to-ram: allow video options to be set at runtime
Currently, acpi video options can only be set on kernel command line. That's
little inflexible; I'd like userland s2ram application that just works, and
modifying kernel command line according to whitelist is not fun. It is better
to just allow s2ram application to set video options just before suspend
(according to the whitelist).
This implements sysctl to allow setting suspend video options without reboot.
(akpm: Documentation updates for this new sysctl are pending..)
Signed-off-by: Pavel Machek <pavel@suse.cz>
Cc: "Brown, Len" <len.brown@intel.com>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
diff --git a/include/linux/acpi.h b/include/linux/acpi.h
index 84d3d9f..d3bc25e 100644
--- a/include/linux/acpi.h
+++ b/include/linux/acpi.h
@@ -427,7 +427,8 @@
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 */