path: root/kernel/power/console.c
diff options
authorAndrew Johnson <ajohnson@intrinsyc.com>2007-03-16 13:38:24 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2007-03-16 19:25:05 -0700
commitb257bc051f06607beb3004d9a1c297085e728bec (patch)
tree2eeb60429d92b683e9593d2fcde2f22ae40a1bf4 /kernel/power/console.c
parent1174cf730179d8f029b9e93cb9a4d5bfb08d1202 (diff)
[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')
1 files changed, 9 insertions, 1 deletions
diff --git a/kernel/power/console.c b/kernel/power/console.c
index 623786d4415..89bcf4973ee 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;
+ }
if (vt_waitactive(SUSPEND_CONSOLE)) {