Commit 943210ba authored by Mikulas Patocka's avatar Mikulas Patocka Committed by Greg Kroah-Hartman
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vt: fix broken display when running aptitude 



If you run aptitude on framebuffer console, the display is corrupted. The
corruption is caused by the commit d8ae7242. The patch adds "offset" to
"start" when calling scr_memsetw, but it forgets to do the same addition
on a subsequent call to do_update_region.

Signed-off-by: default avatarMikulas Patocka <mpatocka@redhat.com>
Fixes: d8ae7242 ("vt: preserve unicode values corresponding to screen characters")
Reviewed-by: default avatarNicolas Pitre <nico@linaro.org>
Cc: stable@vger.kernel.org	# 4.19
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 202dc3cc

drivers/tty/vt/vt.c

+1 −1
Original line number Diff line number Diff line
@@ -1551,7 +1551,7 @@ static void csi_K(struct vc_data *vc, int vpar) 
	scr_memsetw(start + offset, vc->vc_video_erase_char, 2 * count);

	vc->vc_need_wrap = 0;

	if (con_should_update(vc))

		do_update_region(vc, (unsigned long) start, count);

		do_update_region(vc, (unsigned long)(start + offset), count);

}



static void csi_X(struct vc_data *vc, int vpar) /* erase the following vpar positions */