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Commit 962400e8 authored by Frank Pan's avatar Frank Pan Committed by Greg Kroah-Hartman
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tty: fix a little bug in scrup, vt.c 



The code uses vc->vc_cols instead of vc->vc_size_row by mistake, it
will cause half of the region which is going to clear remain
uncleared.
The issue happens in background consoles, so it's hard to observe.

Frank Pan

Signed-off-by: default avatarFrank Pan <frankpzh@gmail.com>
Cc: stable <stable@kernel.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
parent fadf34f0

drivers/char/vt.c

+1 −1
Original line number Diff line number Diff line
@@ -304,7 +304,7 @@ static void scrup(struct vc_data *vc, unsigned int t, unsigned int b, int nr) 
	d = (unsigned short *)(vc->vc_origin + vc->vc_size_row * t);

	s = (unsigned short *)(vc->vc_origin + vc->vc_size_row * (t + nr));

	scr_memmovew(d, s, (b - t - nr) * vc->vc_size_row);

	scr_memsetw(d + (b - t - nr) * vc->vc_cols, vc->vc_video_erase_char,

	scr_memsetw(d + (b - t - nr) * vc->vc_size_row, vc->vc_video_erase_char,

		    vc->vc_size_row * nr);

}