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xen/xenbus: client: Fix call of virt_to_mfn in xenbus_grant_ring

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virt_to_mfn should take a void* rather an unsigned long. While it
doesn't really matter now, it would throw a compiler warning later when
virt_to_mfn will enforce the type.

At the same time, avoid to compute new virtual address every time in the
loop and directly increment the parameter as we don't use it later.

Signed-off-by: Julien Grall <[email protected]>
Reviewed-by: David Vrabel <[email protected]>
Cc: Wei Liu <[email protected]>
Cc: Konrad Rzeszutek Wilk <[email protected]>
Cc: Boris Ostrovsky <[email protected]>
Signed-off-by: David Vrabel <[email protected]>
This commit is contained in:
Julien Grall 2015-06-17 15:28:03 +01:00 • committed by David Vrabel
commit c9fd55eb66
1 changed files with 3 additions and 3 deletions
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6
drivers/xen/xenbus/xenbus_client.c
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@ -379,16 +379,16 @@ int xenbus_grant_ring(struct xenbus_device *dev, void *vaddr,
int i, j;
for (i = 0; i < nr_pages; i++) {
unsigned long addr = (unsigned long)vaddr +
(PAGE_SIZE * i);
err = gnttab_grant_foreign_access(dev->otherend_id,
virt_to_mfn(addr), 0);
virt_to_mfn(vaddr), 0);
if (err < 0) {
xenbus_dev_fatal(dev, err,
"granting access to ring page");
goto fail;
}
grefs[i] = err;
vaddr = vaddr + PAGE_SIZE;
}
return 0;