Commit 42acfc66 authored Oct 03, 2016 by Jiri Slaby Committed by Greg Kroah-Hartman Oct 27, 2016

tty: vt, fix bogus division in csi_J



In csi_J(3), the third parameter of scr_memsetw (vc_screenbuf_size) is
divided by 2 inappropriatelly. But scr_memsetw expects size, not
count, because it divides the size by 2 on its own before doing actual
memset-by-words.

So remove the bogus division.

Signed-off-by: Jiri Slaby <jslaby@suse.cz>
Cc: Petr Písař <ppisar@redhat.com>
Fixes: f8df13e0 (tty: Clean console safely)
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

parent 07d9a380

drivers/tty/vt/vt.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -1176,7 +1176,7 @@ static void csi_J(struct vc_data *vc, int vpar)
		break;
		case 3: /* erase scroll-back buffer (and whole display) */
		scr_memsetw(vc->vc_screenbuf, vc->vc_video_erase_char,
		vc->vc_screenbuf_size >> 1);
		vc->vc_screenbuf_size);
		set_origin(vc);
		if (con_is_visible(vc))
		update_screen(vc);

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