Commit f700d6e5 authored Jul 23, 2008 by Stefano Stabellini Committed by Linus Torvalds Jul 24, 2008

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>

parent e0426e6a

drivers/char/vt.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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)

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