Module Name: src
Committed By: ragge
Date: Sun Mar 22 20:27:47 UTC 2020
Modified Files:
src/sys/arch/vax/vsa: ncr.c
Log Message:
Do not expect a struct buf to be present if doing DMA to kernel space.
Fixes bug reported by sadness on port-vax.
To generate a diff of this commit:
cvs rdiff -u -r1.49 -r1.50 src/sys/arch/vax/vsa/ncr.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/vax/vsa/ncr.c
diff -u src/sys/arch/vax/vsa/ncr.c:1.49 src/sys/arch/vax/vsa/ncr.c:1.50
--- src/sys/arch/vax/vsa/ncr.c:1.49 Mon Sep 3 16:29:28 2018
+++ src/sys/arch/vax/vsa/ncr.c Sun Mar 22 20:27:47 2020
@@ -1,4 +1,4 @@
-/* $NetBSD: ncr.c,v 1.49 2018/09/03 16:29:28 riastradh Exp $ */
+/* $NetBSD: ncr.c,v 1.50 2020/03/22 20:27:47 ragge Exp $ */
/*-
* Copyright (c) 1996 The NetBSD Foundation, Inc.
@@ -42,7 +42,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: ncr.c,v 1.49 2018/09/03 16:29:28 riastradh Exp $");
+__KERNEL_RCSID(0, "$NetBSD: ncr.c,v 1.50 2020/03/22 20:27:47 ragge Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@@ -275,7 +275,11 @@ found:
dh->dh_flags = SIDH_BUSY;
dh->dh_addr = ncr_sc->sc_dataptr;
dh->dh_len = xlen;
- dh->dh_proc = xs->bp->b_proc;
+ if (((vaddr_t)ncr_sc->sc_dataptr & KERNBASE) == 0) {
+ if (xs->bp == NULL)
+ panic("si_dma_alloc");
+ dh->dh_proc = xs->bp->b_proc;
+ }
/* Remember dest buffer parameters */
if (xs->xs_control & XS_CTL_DATA_OUT)
