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s390/cio: Initialize the host addresses in pfn_array 

Let's initialize the host address to something that is invalid,
rather than letting it default to zero.  This just makes it easier
to notice when a pin operation has failed or been skipped.

Signed-off-by: Eric Farman <farman@linux.ibm.com>
Message-Id: <20190514234248.36203-5-farman@linux.ibm.com>
Reviewed-by: Farhan Ali <alifm@linux.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
alistair/sunxi64-5.4-dsi
Eric Farman 2019-05-15 01:42:45 +02:00 committed by Cornelia Huck
parent e4f3f18b12
commit c34a12e6a3
1 changed files with 4 additions and 1 deletions
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5
drivers/s390/cio/vfio_ccw_cp.c
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@ -91,8 +91,11 @@ static int pfn_array_alloc(struct pfn_array *pa, u64 iova, unsigned int len)
pa->pa_pfn = pa->pa_iova_pfn + pa->pa_nr;
pa->pa_iova_pfn[0] = pa->pa_iova >> PAGE_SHIFT;
for (i = 1; i < pa->pa_nr; i++)
pa->pa_pfn[0] = -1ULL;
for (i = 1; i < pa->pa_nr; i++) {
pa->pa_iova_pfn[i] = pa->pa_iova_pfn[i - 1] + 1;
pa->pa_pfn[i] = -1ULL;
}
return 0;
}