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authorDavid S. Miller <davem@sunset.davemloft.net>2006-03-21 02:29:39 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-03-22 01:15:13 -0800
commit14778d9072e53d2171f66ffd9657daff41acfaed (patch)
tree3b60565ec1e957800fc3bf4743497202a24f8279 /drivers
parente952f31bce6e9f64db01f607abc46529ba57ac9e (diff)
downloadop-kernel-dev-14778d9072e53d2171f66ffd9657daff41acfaed.zip
op-kernel-dev-14778d9072e53d2171f66ffd9657daff41acfaed.tar.gz
[SPARC]: Respect vm_page_prot in io_remap_page_range().
Make sure the callers do a pgprot_noncached() on vma->vm_page_prot. Pointed out by Hugh Dickens. Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/char/drm/drm_vm.c1
-rw-r--r--drivers/sbus/char/flash.c3
-rw-r--r--drivers/video/fbmem.c8
-rw-r--r--drivers/video/sbuslib.c2
4 files changed, 5 insertions, 9 deletions
diff --git a/drivers/char/drm/drm_vm.c b/drivers/char/drm/drm_vm.c
index 0291cd6..ffd0800 100644
--- a/drivers/char/drm/drm_vm.c
+++ b/drivers/char/drm/drm_vm.c
@@ -619,6 +619,7 @@ int drm_mmap(struct file *filp, struct vm_area_struct *vma)
#endif
offset = dev->driver->get_reg_ofs(dev);
#ifdef __sparc__
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
if (io_remap_pfn_range(DRM_RPR_ARG(vma) vma->vm_start,
(map->offset + offset) >> PAGE_SHIFT,
vma->vm_end - vma->vm_start,
diff --git a/drivers/sbus/char/flash.c b/drivers/sbus/char/flash.c
index 6bdd768..2beb3dd 100644
--- a/drivers/sbus/char/flash.c
+++ b/drivers/sbus/char/flash.c
@@ -71,9 +71,8 @@ flash_mmap(struct file *file, struct vm_area_struct *vma)
if (vma->vm_end - (vma->vm_start + (vma->vm_pgoff << PAGE_SHIFT)) > size)
size = vma->vm_end - (vma->vm_start + (vma->vm_pgoff << PAGE_SHIFT));
- pgprot_val(vma->vm_page_prot) &= ~(_PAGE_CACHE);
- pgprot_val(vma->vm_page_prot) |= _PAGE_E;
vma->vm_flags |= (VM_SHM | VM_LOCKED);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
if (io_remap_pfn_range(vma, vma->vm_start, addr, size, vma->vm_page_prot))
return -EAGAIN;
diff --git a/drivers/video/fbmem.c b/drivers/video/fbmem.c
index 996c7b5..07d882b 100644
--- a/drivers/video/fbmem.c
+++ b/drivers/video/fbmem.c
@@ -1169,11 +1169,6 @@ fb_mmap(struct file *file, struct vm_area_struct * vma)
vma->vm_pgoff = off >> PAGE_SHIFT;
/* This is an IO map - tell maydump to skip this VMA */
vma->vm_flags |= VM_IO | VM_RESERVED;
-#if defined(__sparc_v9__)
- if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
- vma->vm_end - vma->vm_start, vma->vm_page_prot))
- return -EAGAIN;
-#else
#if defined(__mc68000__)
#if defined(CONFIG_SUN3)
pgprot_val(vma->vm_page_prot) |= SUN3_PAGE_NOCACHE;
@@ -1195,7 +1190,7 @@ fb_mmap(struct file *file, struct vm_area_struct * vma)
#elif defined(__i386__) || defined(__x86_64__)
if (boot_cpu_data.x86 > 3)
pgprot_val(vma->vm_page_prot) |= _PAGE_PCD;
-#elif defined(__mips__)
+#elif defined(__mips__) || defined(__sparc_v9__)
vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
#elif defined(__hppa__)
pgprot_val(vma->vm_page_prot) |= _PAGE_NO_CACHE;
@@ -1212,7 +1207,6 @@ fb_mmap(struct file *file, struct vm_area_struct * vma)
if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
vma->vm_end - vma->vm_start, vma->vm_page_prot))
return -EAGAIN;
-#endif /* !__sparc_v9__ */
return 0;
#endif /* !sparc32 */
}
diff --git a/drivers/video/sbuslib.c b/drivers/video/sbuslib.c
index a4d7cc5..34ef859 100644
--- a/drivers/video/sbuslib.c
+++ b/drivers/video/sbuslib.c
@@ -58,6 +58,8 @@ int sbusfb_mmap_helper(struct sbus_mmap_map *map,
/* To stop the swapper from even considering these pages */
vma->vm_flags |= (VM_IO | VM_RESERVED);
+ vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
+
/* Each page, see which map applies */
for (page = 0; page < size; ){
map_size = 0;
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