From 8070ddd29e20498659475c71be189ff09f3607d2 Mon Sep 17 00:00:00 2001 From: Julien Grall Date: Wed, 17 Jun 2015 15:28:03 +0100 Subject: [PATCH] xen/xenbus: client: Fix call of virt_to_mfn in xenbus_grant_ring 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 Reviewed-by: David Vrabel Cc: Wei Liu Cc: Konrad Rzeszutek Wilk Cc: Boris Ostrovsky Signed-off-by: David Vrabel (cherry picked from commit c9fd55eb6625ead6a1207e7da38026ff47c5198b) Signed-off-by: Elena Ufimtseva --- drivers/xen/xenbus/xenbus_client.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/drivers/xen/xenbus/xenbus_client.c b/drivers/xen/xenbus/xenbus_client.c index a014016eb7b0..9ad327238ba9 100644 --- a/drivers/xen/xenbus/xenbus_client.c +++ b/drivers/xen/xenbus/xenbus_client.c @@ -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; -- 2.50.1