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Avoid crashing if booting via serial console

This commit is contained in:
martin 2007-04-14 10:59:18 +00:00
parent 97c727e8ec
commit 6668495936
1 changed files with 9 additions and 2 deletions
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11
sys/arch/sgimips/dev/crmfb.c
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@ -1,4 +1,4 @@
/* $NetBSD: crmfb.c,v 1.3 2007/04/13 12:21:00 jmcneill Exp $ */
/* $NetBSD: crmfb.c,v 1.4 2007/04/14 10:59:18 martin Exp $ */
/*-
* Copyright (c) 2007 Jared D. McNeill <jmcneill@invisible.ca>
@ -37,7 +37,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: crmfb.c,v 1.3 2007/04/13 12:21:00 jmcneill Exp $");
__KERNEL_RCSID(0, "$NetBSD: crmfb.c,v 1.4 2007/04/14 10:59:18 martin Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -239,6 +239,13 @@ crmfb_attach(struct device *parent, struct device *self, void *opaque)
else
sc->sc_depth = 32;
if (sc->sc_width == 0 || sc->sc_height == 0) {
printf("%s: device unusable if not setup by firmware\n",
sc->sc_dev.dv_xname);
bus_space_unmap(sc->sc_iot, sc->sc_ioh, 0 /* XXX */);
return;
}
printf("%s: initial resolution %dx%d %d bpp\n",
sc->sc_dev.dv_xname, sc->sc_width, sc->sc_height, sc->sc_depth);