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ALSA: us122l: fix missing unlock in usb_stream_hwdep_vm_fault() 

Should unlock us122l->mutex before returning VM_FAULT_SIGBUS.

Signed-off-by: Li Zefan <lizf@cn.fujitsu.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
This commit is contained in:
Li Zefan 2008-10-15 10:07:23 +08:00 committed by Takashi Iwai
parent 8825e8e8d0
commit 428ffb7151
1 changed files with 7 additions and 6 deletions
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13
sound/usb/usx2y/us122l.c
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@ -118,12 +118,11 @@ static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area,
void *vaddr;
struct us122l *us122l = area->vm_private_data;
struct usb_stream *s;
int vm_f = VM_FAULT_SIGBUS;
mutex_lock(&us122l->mutex);
s = us122l->sk.s;
if (!s)
goto out;
goto unlock;
offset = vmf->pgoff << PAGE_SHIFT;
if (offset < PAGE_ALIGN(s->read_size))
@ -131,7 +130,7 @@ static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area,
else {
offset -= PAGE_ALIGN(s->read_size);
if (offset >= PAGE_ALIGN(s->write_size))
goto out;
goto unlock;
vaddr = us122l->sk.write_page + offset;
}
@ -141,9 +140,11 @@ static int usb_stream_hwdep_vm_fault(struct vm_area_struct *area,
mutex_unlock(&us122l->mutex);
vmf->page = page;
vm_f = 0;
out:
return vm_f;
return 0;
unlock:
mutex_unlock(&us122l->mutex);
return VM_FAULT_SIGBUS;
}
static void usb_stream_hwdep_vm_close(struct vm_area_struct *area)