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| author | Stefano Stabellini <stefano.stabellini@eu.citrix.com> | 2008-07-23 21:29:59 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 10:47:30 -0700 |
| commit | f700d6e5e5549cb9349d22043f4bd153792c621f (patch) | |
| tree | ea15f9d3f3a800d5ff938e645cc046a67ebc4ad3 /drivers/char | |
| parent | e0426e6a09954d205da2d674a3d368d2715e3afd (diff) | |
| download | linux-stable-f700d6e5e5549cb9349d22043f4bd153792c621f.tar.gz linux-stable-f700d6e5e5549cb9349d22043f4bd153792c621f.tar.bz2 linux-stable-f700d6e5e5549cb9349d22043f4bd153792c621f.zip | |
vt: do not update when the console is blanked
vt.c DO_UPDATE macro checks if the console is visible but doesn't check if
the console is blanked.
In fact updating fbcon while the console is blanked is not only
unnecessary but can even cause screen corruption.
Therefore I am adding a simple check on console_blanked in DO_UPDATE.
Signed-off-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Cc: Krzysztof Helt <krzysztof.h1@poczta.fm>
Cc: "Antonino A. Daplas" <adaplas@pol.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/char')
| -rw-r--r-- | drivers/char/vt.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/char/vt.c b/drivers/char/vt.c index ab53a1d4d895..cb8c90da3934 100644 --- a/drivers/char/vt.c +++ b/drivers/char/vt.c @@ -261,7 +261,7 @@ static void notify_update(struct vc_data *vc) #ifdef VT_BUF_VRAM_ONLY #define DO_UPDATE(vc) 0 #else -#define DO_UPDATE(vc) CON_IS_VISIBLE(vc) +#define DO_UPDATE(vc) (CON_IS_VISIBLE(vc) && !console_blanked) #endif static inline unsigned short *screenpos(struct vc_data *vc, int offset, int viewed) |