[ALSA] alsa: usx2y nopage

Convert alsa usx2y driver from nopage to fault.

Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>

2 files changed, 17 insertions, 26 deletions

diff --git a/sound/usb/usx2y/usX2Yhwdep.c b/sound/usb/usx2y/usX2Yhwdep.c
index b76b3dd9df25..a1dca3441319 100644
--- a/sound/usb/usx2y/usX2Yhwdep.c
+++ b/sound/usb/usx2y/usX2Yhwdep.c
@@ -34,34 +34,31 @@
 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)
diff --git a/sound/usb/usx2y/usx2yhwdeppcm.c b/sound/usb/usx2y/usx2yhwdeppcm.c
index a5e7bcd7ca2e..800b5cecfc80 100644
--- a/sound/usb/usx2y/usx2yhwdeppcm.c
+++ b/sound/usb/usx2y/usx2yhwdeppcm.c
@@ -683,30 +683,24 @@ static void snd_usX2Y_hwdep_pcm_vm_close(struct vm_area_struct *area)
 }
 
 
-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,
 };