aboutsummaryrefslogtreecommitdiff
path: root/drivers/char/mem.c
diff options
context:
space:
mode:
authorSuresh Siddha <suresh.b.siddha@intel.com>2009-04-09 14:26:52 -0700
committerIngo Molnar <mingo@elte.hu>2009-04-10 13:55:48 +0200
commit0c3c8a18361a636069f5a5d9d0d0f9c2124e6b94 (patch)
treef981571c3778083924be8de03445fc4c9ee5624b /drivers/char/mem.c
parentb6ff32d9aaeeeecf98f9a852d715569183585312 (diff)
downloadlinux-0c3c8a18361a636069f5a5d9d0d0f9c2124e6b94.tar.gz
x86, PAT: Remove duplicate memtype reserve in devmem mmap
/dev/mem mmap code was doing memtype reserve/free for a while now. Recently we added memtype tracking in remap_pfn_range, and /dev/mem mmap uses it indirectly. So, we don't need seperate tracking in /dev/mem code any more. That means another ~100 lines of code removed :-). Signed-off-by: Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> LKML-Reference: <20090409212709.085210000@intel.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'drivers/char/mem.c')
-rw-r--r--drivers/char/mem.c27
1 files changed, 0 insertions, 27 deletions
diff --git a/drivers/char/mem.c b/drivers/char/mem.c
index 3586b3b3df3..8f05c38c2f0 100644
--- a/drivers/char/mem.c
+++ b/drivers/char/mem.c
@@ -301,33 +301,7 @@ static inline int private_mapping_ok(struct vm_area_struct *vma)
}
#endif
-void __attribute__((weak))
-map_devmem(unsigned long pfn, unsigned long len, pgprot_t prot)
-{
- /* nothing. architectures can override. */
-}
-
-void __attribute__((weak))
-unmap_devmem(unsigned long pfn, unsigned long len, pgprot_t prot)
-{
- /* nothing. architectures can override. */
-}
-
-static void mmap_mem_open(struct vm_area_struct *vma)
-{
- map_devmem(vma->vm_pgoff, vma->vm_end - vma->vm_start,
- vma->vm_page_prot);
-}
-
-static void mmap_mem_close(struct vm_area_struct *vma)
-{
- unmap_devmem(vma->vm_pgoff, vma->vm_end - vma->vm_start,
- vma->vm_page_prot);
-}
-
static struct vm_operations_struct mmap_mem_ops = {
- .open = mmap_mem_open,
- .close = mmap_mem_close,
#ifdef CONFIG_HAVE_IOREMAP_PROT
.access = generic_access_phys
#endif
@@ -362,7 +336,6 @@ static int mmap_mem(struct file * file, struct vm_area_struct * vma)
vma->vm_pgoff,
size,
vma->vm_page_prot)) {
- unmap_devmem(vma->vm_pgoff, size, vma->vm_page_prot);
return -EAGAIN;
}
return 0;