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| author | Andrew Johnson <ajohnson@intrinsyc.com> | 2007-03-16 22:38:24 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-03-17 03:25:05 +0100 |
| commit | b257bc051f06607beb3004d9a1c297085e728bec (patch) | |
| tree | 2eeb60429d92b683e9593d2fcde2f22ae40a1bf4 /kernel/power/console.c | |
| parent | [PATCH] smbfs: double free memory corruption (diff) | |
| download | linux-b257bc051f06607beb3004d9a1c297085e728bec.tar.xz linux-b257bc051f06607beb3004d9a1c297085e728bec.zip | |
[PATCH] swsusp: fix suspend when console is in VT_AUTO+KD_GRAPHICS mode
When the console is in VT_AUTO+KD_GRAPHICS mode, switching to the
SUSPEND_CONSOLE fails, resulting in vt_waitactive() waiting indefinitely or
until the task is interrupted. This patch tests if a console switch can
occur in set_console() and returns early if a console switch is not
possible.
[akpm@linux-foundation.org: cleanup]
Signed-off-by: Andrew Johnson <ajohnson@intrinsyc.com>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/power/console.c')
| -rw-r--r-- | kernel/power/console.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/kernel/power/console.c b/kernel/power/console.c index 623786d44159..89bcf4973ee5 100644 --- a/kernel/power/console.c +++ b/kernel/power/console.c @@ -27,7 +27,15 @@ int pm_prepare_console(void) return 1; } - set_console(SUSPEND_CONSOLE); + if (set_console(SUSPEND_CONSOLE)) { + /* + * We're unable to switch to the SUSPEND_CONSOLE. + * Let the calling function know so it can decide + * what to do. + */ + release_console_sem(); + return 1; + } release_console_sem(); if (vt_waitactive(SUSPEND_CONSOLE)) { |