brcmfmac: work-around gcc 4.7 build issue

[pandora-kernel.git] / drivers / char / mem.c

diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 1c8cfa6..d783656 100644 (file)
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -325,7 +325,7 @@ static int mmap_mem(struct file *file, struct vm_area_struct *vma)
        phys_addr_t offset = (phys_addr_t)vma->vm_pgoff << PAGE_SHIFT;
 
        /* It's illegal to wrap around the end of the physical address space. */
-       if (offset + (phys_addr_t)size < offset)
+       if (offset + (phys_addr_t)size - 1 < offset)
                return -EINVAL;
 
        if (!valid_mmap_phys_addr_range(vma->vm_pgoff, size))