Author: dumbbell
Date: Sat Oct 4 18:40:40 2014
New Revision: 272537
URL: https://svnweb.freebsd.org/changeset/base/272537
Log:
vt(4): Don't recalculate buffer size if we don't know screen size
When the screen size is unknown, it's set to 0x0. We can't use that as
the buffer size, otherwise, functions such as vtbuf_fill() will fail.
This fixes a panic on RaspberryPi, where there's no vt(4) backend
configured early in boot.
PR: 193981
Tested by: danilo@
MFC after: 3 days
Modified:
head/sys/dev/vt/vt_core.c
Modified: head/sys/dev/vt/vt_core.c
==============================================================================
--- head/sys/dev/vt/vt_core.c Sat Oct 4 18:38:14 2014 (r272536)
+++ head/sys/dev/vt/vt_core.c Sat Oct 4 18:40:40 2014 (r272537)
@@ -1269,7 +1269,8 @@ vtterm_cnprobe(struct terminal *tm, stru
* that we have the real viewable size, fix it in the static
* buffer.
*/
- vt_termsize(vd, vw->vw_font, &vw->vw_buf.vb_scr_size);
+ if (vd->vd_width != 0 && vd->vd_height != 0)
+ vt_termsize(vd, vw->vw_font, &vw->vw_buf.vb_scr_size);
vtbuf_init_early(&vw->vw_buf);
vt_winsize(vd, vw->vw_font, &wsz);
_______________________________________________
svn-src-all@freebsd.org mailing list
http://lists.freebsd.org/mailman/listinfo/svn-src-all
To unsubscribe, send any mail to "svn-src-all-unsubscr...@freebsd.org"
