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Catch the return value from the XENMEM_decrease_reservation hypercall, 

and not some error value stored earlier.

While here, fix a typo in a comment.
This commit is contained in:
jym 2010-03-02 00:13:50 +00:00
parent d4b5b32026
commit 13da824d1b
1 changed files with 5 additions and 5 deletions
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10
sys/arch/xen/x86/xen_bus_dma.c
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@ -1,4 +1,4 @@
/* $NetBSD: xen_bus_dma.c,v 1.18 2010/02/27 09:22:40 jym Exp $ */
/* $NetBSD: xen_bus_dma.c,v 1.19 2010/03/02 00:13:50 jym Exp $ */
/* NetBSD bus_dma.c,v 1.21 2005/04/16 07:53:35 yamt Exp */
/*-
@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: xen_bus_dma.c,v 1.18 2010/02/27 09:22:40 jym Exp $");
__KERNEL_RCSID(0, "$NetBSD: xen_bus_dma.c,v 1.19 2010/03/02 00:13:50 jym Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -81,7 +81,7 @@ _xen_alloc_contig(bus_size_t size, bus_size_t alignment, bus_size_t boundary,
npagesreq = (size >> PAGE_SHIFT);
KASSERT(npages >= npagesreq);
/* get npages from UWM, and give them back to the hypervisor */
/* get npages from UVM, and give them back to the hypervisor */
error = uvm_pglistalloc(((psize_t)npages) << PAGE_SHIFT,
0, avail_end, 0, 0, mlistp, npages, (flags & BUS_DMA_NOWAIT) == 0);
if (error)
@ -96,8 +96,8 @@ _xen_alloc_contig(bus_size_t size, bus_size_t alignment, bus_size_t boundary,
res.nr_extents = 1;
res.extent_order = 0;
res.domid = DOMID_SELF;
if (HYPERVISOR_memory_op(XENMEM_decrease_reservation, &res)
!= 1) {
error = HYPERVISOR_memory_op(XENMEM_decrease_reservation, &res);
if (error != 1) {
#ifdef DEBUG
printf("xen_alloc_contig: XENMEM_decrease_reservation "
"failed: err %d (pa %#" PRIxPADDR " mfn %#lx)\n",