Hi,
I am proposing two changes to s2ram-x86.c:
- first, if no "-a" is given, reset acpi_video_flags to 0, which will
override also the boot options. The reason i want to do this is that
people (me included) are sometimes confused by first trying
"s2ram -f -a3", then later trying "s2ram -f" and concluding that
"-f is enough to get it going". (second hunk).
- second, with the beeping patch arriving, do not reset those settings
by first reading out acpi_video_flags and ORing the S3_BIOS|S3_MODE
options with it. (first hunk).
Objections?
Index: s2ram-x86.c
===================================================================
RCS file: /cvsroot/suspend/suspend/s2ram-x86.c,v
retrieving revision 1.5
diff -u -p -r1.5 s2ram-x86.c
--- s2ram-x86.c 17 Jun 2007 20:51:30 -0000 1.5
+++ s2ram-x86.c 17 Jul 2007 20:28:25 -0000
@@ -70,12 +70,20 @@ void identify_machine(void)
static int set_acpi_video_mode(int mode)
{
- FILE *f = fopen("/proc/sys/kernel/acpi_video_flags", "w");
+ unsigned long acpi_video_flags;
+ FILE *f = fopen("/proc/sys/kernel/acpi_video_flags", "rw");
if (!f) {
printf("/proc/sys/kernel/acpi_video_flags does not exist; you
need a kernel >=2.6.16.\n");
return S2RAM_FAIL;
}
- fprintf(f, "%d", mode);
+ /* read the old setting from /proc */
+ if (fscanf(f, "%ld", &acpi_video_flags) != 1) {
+ printf("/proc/sys/kernel/acpi_video_flags format is invalid\n");
+ return S2RAM_FAIL;
+ }
+ /* mask out bits 0 and 1 */
+ acpi_video_flags = acpi_video_flags & (~0UL - S3_BIOS - S3_MODE);
+ fprintf(f, "%ld", acpi_video_flags | mode);
fflush(f);
fclose(f);
return S2RAM_OK;
@@ -210,9 +218,7 @@ int s2ram_hacks(void)
{
int ret = 0;
- /* 0 means: don't touch what was set on kernel commandline */
- if (flags & (S3_BIOS | S3_MODE))
- ret = set_acpi_video_mode(flags & (S3_BIOS | S3_MODE));
+ ret = set_acpi_video_mode(flags & (S3_BIOS | S3_MODE));
if (ret)
return ret;
--
Stefan Seyfried
QA / R&D Team Mobile Devices | "Any ideas, John?"
SUSE LINUX Products GmbH, Nürnberg | "Well, surrounding them's out."
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