From e6418fcc8adaa5c3911295cbe7ddd368b9788616 Mon Sep 17 00:00:00 2001 From: Ben Hutchings Date: Sun, 27 Oct 2013 21:53:40 +0000 Subject: [PATCH] uio: Pass pointers to virt_to_page(), not integers Most architectures define virt_to_page() as a macro that casts its argument such that an argument of type unsigned long will be accepted without complaint. However, the proper type is void *, and passing unsigned long results in a warning on MIPS. Compile-tested only. Signed-off-by: Ben Hutchings Signed-off-by: Greg Kroah-Hartman --- drivers/uio/uio.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/drivers/uio/uio.c b/drivers/uio/uio.c index c8e45add506e..e221f13fcb61 100644 --- a/drivers/uio/uio.c +++ b/drivers/uio/uio.c @@ -605,6 +605,7 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) struct uio_device *idev = vma->vm_private_data; struct page *page; unsigned long offset; + void *addr; int mi = uio_find_mem_index(vma); if (mi < 0) @@ -616,10 +617,11 @@ static int uio_vma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) */ offset = (vmf->pgoff - mi) << PAGE_SHIFT; + addr = (void *)(unsigned long)idev->info->mem[mi].addr + offset; if (idev->info->mem[mi].memtype == UIO_MEM_LOGICAL) - page = virt_to_page(idev->info->mem[mi].addr + offset); + page = virt_to_page(addr); else - page = vmalloc_to_page((void *)(unsigned long)idev->info->mem[mi].addr + offset); + page = vmalloc_to_page(addr); get_page(page); vmf->page = page; return 0; -- 2.20.1