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authorSascha Sommer <saschasommer@freenet.de>2005-12-12 00:37:30 -0800
committerLinus Torvalds <torvalds@g5.osdl.org>2005-12-12 08:57:44 -0800
commit3639c8619d50a6dea8fa106a5c61d848ffdcd3d6 (patch)
treef2ec8303fee79b26097ba996941a6550ffac7dbc /drivers
parent225a0cb6716da3aafaeb9ed2f8d9a7a1f2af9f09 (diff)
[PATCH] V4L/DVB: (3113) Convert em28xx to use vm_insert_page instead of remap_pfn_range
Convert em28xx to use vm_insert_page instead of remap_pfn_range Signed-off-by: Sascha Sommer <saschasommer@freenet.de> Signed-off-by: Michael Krufky <mkrufky@gmail.com> Signed-off-by: Mauro Carvalho Chehab <mchehab@brturbo.com.br> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'drivers')
-rw-r--r--drivers/media/video/em28xx/em28xx-core.c49
-rw-r--r--drivers/media/video/em28xx/em28xx-video.c21
2 files changed, 9 insertions, 61 deletions
diff --git a/drivers/media/video/em28xx/em28xx-core.c b/drivers/media/video/em28xx/em28xx-core.c
index 51757322197..e8a1c224756 100644
--- a/drivers/media/video/em28xx/em28xx-core.c
+++ b/drivers/media/video/em28xx/em28xx-core.c
@@ -116,48 +116,6 @@ void em28xx_print_ioctl(char *name, unsigned int cmd)
}
}
-static void *rvmalloc(size_t size)
-{
- void *mem;
- unsigned long adr;
-
- size = PAGE_ALIGN(size);
-
- mem = vmalloc_32((unsigned long)size);
- if (!mem)
- return NULL;
-
- memset(mem, 0, size);
-
- adr = (unsigned long)mem;
- while (size > 0) {
- SetPageReserved(vmalloc_to_page((void *)adr));
- adr += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
-
- return mem;
-}
-
-static void rvfree(void *mem, size_t size)
-{
- unsigned long adr;
-
- if (!mem)
- return;
-
- size = PAGE_ALIGN(size);
-
- adr = (unsigned long)mem;
- while (size > 0) {
- ClearPageReserved(vmalloc_to_page((void *)adr));
- adr += PAGE_SIZE;
- size -= PAGE_SIZE;
- }
-
- vfree(mem);
-}
-
/*
* em28xx_request_buffers()
@@ -174,8 +132,10 @@ u32 em28xx_request_buffers(struct em28xx *dev, u32 count)
dev->num_frames = count;
while (dev->num_frames > 0) {
- if ((buff = rvmalloc(dev->num_frames * imagesize)))
+ if ((buff = vmalloc_32(dev->num_frames * imagesize))) {
+ memset(buff, 0, dev->num_frames * imagesize);
break;
+ }
dev->num_frames--;
}
@@ -218,8 +178,7 @@ void em28xx_queue_unusedframes(struct em28xx *dev)
void em28xx_release_buffers(struct em28xx *dev)
{
if (dev->num_frames) {
- rvfree(dev->frame[0].bufmem,
- dev->num_frames * PAGE_ALIGN(dev->frame[0].buf.length));
+ vfree(dev->frame[0].bufmem);
dev->num_frames = 0;
}
}
diff --git a/drivers/media/video/em28xx/em28xx-video.c b/drivers/media/video/em28xx/em28xx-video.c
index c08e505e700..8ecaa0803e0 100644
--- a/drivers/media/video/em28xx/em28xx-video.c
+++ b/drivers/media/video/em28xx/em28xx-video.c
@@ -189,16 +189,6 @@ static DECLARE_RWSEM(em28xx_disconnect);
/********************* v4l2 interface ******************************************/
-static inline unsigned long kvirt_to_pa(unsigned long adr)
-{
- unsigned long kva, ret;
-
- kva = (unsigned long)page_address(vmalloc_to_page((void *)adr));
- kva |= adr & (PAGE_SIZE - 1);
- ret = __pa(kva);
- return ret;
-}
-
/*
* em28xx_config()
* inits registers with sane defaults
@@ -616,7 +606,8 @@ static struct vm_operations_struct em28xx_vm_ops = {
static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
{
unsigned long size = vma->vm_end - vma->vm_start,
- start = vma->vm_start, pos, page;
+ start = vma->vm_start;
+ void *pos;
u32 i;
struct em28xx *dev = filp->private_data;
@@ -657,12 +648,10 @@ static int em28xx_v4l2_mmap(struct file *filp, struct vm_area_struct *vma)
vma->vm_flags |= VM_IO;
vma->vm_flags |= VM_RESERVED; /* avoid to swap out this VMA */
- pos = (unsigned long)dev->frame[i].bufmem;
+ pos = dev->frame[i].bufmem;
while (size > 0) { /* size is page-aligned */
- page = vmalloc_to_pfn((void *)pos);
- if (remap_pfn_range(vma, start, page, PAGE_SIZE,
- vma->vm_page_prot)) {
- em28xx_videodbg("mmap: rename page map failed\n");
+ if (vm_insert_page(vma, start, vmalloc_to_page(pos))) {
+ em28xx_videodbg("mmap: vm_insert_page failed\n");
up(&dev->fileop_lock);
return -EAGAIN;
}