diff options
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/ia64/xen/xencomm.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/ia64/xen/xencomm.c b/arch/ia64/xen/xencomm.c index 1f5d7ac82e97..73d903ca2d64 100644 --- a/arch/ia64/xen/xencomm.c +++ b/arch/ia64/xen/xencomm.c @@ -17,6 +17,7 @@ */ #include <linux/mm.h> +#include <linux/err.h> static unsigned long kernel_virtual_offset; static int is_xencomm_initialized; @@ -98,7 +99,7 @@ xencomm_vtop(unsigned long vaddr) /* We assume the page is modified. */ page = follow_page(vma, vaddr, FOLL_WRITE | FOLL_TOUCH); - if (!page) + if (IS_ERR_OR_NULL(page)) return ~0UL; return (page_to_pfn(page) << PAGE_SHIFT) | (vaddr & ~PAGE_MASK); |