Convert alsa usx2y driver from nopage to fault.
Signed-off-by: Nick Piggin <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
---
sound/usb/usx2y/usX2Yhwdep.c | 21 ++++++++-------------
sound/usb/usx2y/usx2yhwdeppcm.c | 19 ++++++-------------
2 files changed, 14 insertions(+), 26 deletions(-)
Index: linux-2.6/sound/usb/usx2y/usX2Yhwdep.c
===================================================================
--- linux-2.6.orig/sound/usb/usx2y/usX2Yhwdep.c
+++ linux-2.6/sound/usb/usx2y/usX2Yhwdep.c
@@ -34,34 +34,29 @@
int usX2Y_hwdep_pcm_new(struct snd_card *card);
-static struct page * snd_us428ctls_vm_nopage(struct vm_area_struct *area, unsigned long address, int *type)
+static int snd_us428ctls_vm_fault(struct vm_area_struct *area, struct vm_fault *vmf)
{
unsigned long offset;
struct page * page;
void *vaddr;
- snd_printdd("ENTER, start %lXh, ofs %lXh, pgoff %ld, addr %lXh\n",
+ snd_printdd("ENTER, start %lXh, pgoff %ld\n",
area->vm_start,
- address - area->vm_start,
- (address - area->vm_start) >> PAGE_SHIFT,
- address);
+ vmf->pgoff);
- offset = area->vm_pgoff << PAGE_SHIFT;
- offset += address - area->vm_start;
- snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_SIGBUS);
+ offset = vmf->pgoff << PAGE_SHIFT;
vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->us428ctls_sharedmem + offset;
page = virt_to_page(vaddr);
get_page(page);
- snd_printdd( "vaddr=%p made us428ctls_vm_nopage() return %p; offset=%lX\n", vaddr, page, offset);
+ vmf->page = page;
- if (type)
- *type = VM_FAULT_MINOR;
+ snd_printdd( "vaddr=%p made us428ctls_vm_fault() page %p\n", vaddr, page);
- return page;
+ return 0;
}
static struct vm_operations_struct us428ctls_vm_ops = {
- .nopage = snd_us428ctls_vm_nopage,
+ .fault = snd_us428ctls_vm_fault,
};
static int snd_us428ctls_mmap(struct snd_hwdep * hw, struct file *filp, struct vm_area_struct *area)
Index: linux-2.6/sound/usb/usx2y/usx2yhwdeppcm.c
===================================================================
--- linux-2.6.orig/sound/usb/usx2y/usx2yhwdeppcm.c
+++ linux-2.6/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -683,30 +683,23 @@ static void snd_usX2Y_hwdep_pcm_vm_close
}
-static struct page * snd_usX2Y_hwdep_pcm_vm_nopage(struct vm_area_struct *area, unsigned long address, int *type)
+static int snd_usX2Y_hwdep_pcm_vm_fault(struct vm_area_struct *area, struct vm_fault *vmf)
{
unsigned long offset;
- struct page *page;
void *vaddr;
- offset = area->vm_pgoff << PAGE_SHIFT;
- offset += address - area->vm_start;
- snd_assert((offset % PAGE_SIZE) == 0, return NOPAGE_OOM);
+ offset = vmf->pgoff << PAGE_SHIFT;
vaddr = (char*)((struct usX2Ydev *)area->vm_private_data)->hwdep_pcm_shm + offset;
- page = virt_to_page(vaddr);
- get_page(page);
-
- if (type)
- *type = VM_FAULT_MINOR;
-
- return page;
+ vmf->page = virt_to_page(vaddr);
+ get_page(vmf->page);
+ return 0;
}
static struct vm_operations_struct snd_usX2Y_hwdep_pcm_vm_ops = {
.open = snd_usX2Y_hwdep_pcm_vm_open,
.close = snd_usX2Y_hwdep_pcm_vm_close,
- .nopage = snd_usX2Y_hwdep_pcm_vm_nopage,
+ .fault = snd_usX2Y_hwdep_pcm_vm_fault,
};
--
--
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