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Ensure the device is fully initialized before starting the update thread.

This commit is contained in:
nat 2022-09-06 02:26:11 +00:00
parent bc47b06a16
commit 6363165435
1 changed files with 4 additions and 3 deletions
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7
sys/dev/usb/udl.c
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@ -1,4 +1,4 @@
/* $NetBSD: udl.c,v 1.30 2022/09/06 02:23:50 nat Exp $ */
/* $NetBSD: udl.c,v 1.31 2022/09/06 02:26:11 nat Exp $ */
/*-
* Copyright (c) 2009 FUKAUMI Naoki.
@ -53,7 +53,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: udl.c,v 1.30 2022/09/06 02:23:50 nat Exp $");
__KERNEL_RCSID(0, "$NetBSD: udl.c,v 1.31 2022/09/06 02:26:11 nat Exp $");
#ifdef _KERNEL_OPT
#include "opt_usb.h"
@ -1833,7 +1833,8 @@ udl_update_thread(void *v)
kthread_exit(0);
}
if (sc->sc_thread_stop == true || sc->sc_fbmem == NULL)
if (sc->sc_thread_stop == true || sc->sc_fbmem == NULL ||
sc->sc_fbmem_prev == NULL || sc->sc_width <= 0)
goto thread_wait;
if (sc->sc_clear == true)