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| author | Jason Wessel <jason.wessel@windriver.com> | 2010-08-16 20:58:31 (GMT) |
|---|---|---|
| committer | Jason Wessel <jason.wessel@windriver.com> | 2010-08-16 20:58:31 (GMT) |
| commit | beed5336eba6a5a70c97e9f4bfff525915a25003 (patch) | |
| tree | cbc477bf6c3377da41c50a6d80c7218a4a589b6c | |
| parent | fed891c89bfd8ef898c2289b34e748969bb12798 (diff) | |
| download | linux-beed5336eba6a5a70c97e9f4bfff525915a25003.tar.xz | |
vt,console,kdb: preserve console_blanked while in kdb
Commit b45cfba4e9005d64d419718e7ff7f7cab44c1994 (vt,console,kdb:
implement atomic console enter/leave functions) introduced the ability
to atomically change the console mode with kernel mode setting but did
not preserve the state of the console_blanked variable.
The console_blanked variable must be restored when executing the
con_debug_leave() or further kernel mode set changes (such as using
chvt X) will fail to correctly set the state of console.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
Reviewed-by: Jesse Barnes <jbarnes@virtuousgeek.org>
CC: Andrew Morton <akpm@linux-foundation.org>
| -rw-r--r-- | drivers/char/vt.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/char/vt.c b/drivers/char/vt.c index 3af1a22..50590c7 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -198,6 +198,7 @@ static int saved_fg_console; static int saved_last_console; static int saved_want_console; static int saved_vc_mode; +static int saved_console_blanked; /* * For each existing display, we have a pointer to console currently visible @@ -3449,6 +3450,7 @@ int con_debug_enter(struct vc_data *vc) saved_last_console = last_console; saved_want_console = want_console; saved_vc_mode = vc->vc_mode; + saved_console_blanked = console_blanked; vc->vc_mode = KD_TEXT; console_blanked = 0; if (vc->vc_sw->con_debug_enter) @@ -3492,6 +3494,7 @@ int con_debug_leave(void) fg_console = saved_fg_console; last_console = saved_last_console; want_console = saved_want_console; + console_blanked = saved_console_blanked; vc_cons[fg_console].d->vc_mode = saved_vc_mode; vc = vc_cons[fg_console].d; |