diff options
| author | Arjan van de Ven <arjan@infradead.org> | 2006-01-11 15:55:29 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2006-03-20 14:49:55 -0800 |
| commit | 4186ecf8ad16dd05759a09594de6a87e48759ba6 (patch) | |
| tree | 3ee5292d9f4a36e3eb359b586289ec972bcbaf39 /drivers/usb/media/stv680.c | |
| parent | 35cce732d9d4d9af6b4ad4d26d8f8c0eddb573a2 (diff) | |
[PATCH] USB: convert a bunch of USB semaphores to mutexes
the patch below converts a bunch of semaphores-used-as-mutex in the USB
code to mutexes
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/media/stv680.c')
| -rw-r--r-- | drivers/usb/media/stv680.c | 13 |
1 files changed, 7 insertions, 6 deletions
diff --git a/drivers/usb/media/stv680.c b/drivers/usb/media/stv680.c index b497a6a0a20..b1a6be2958e 100644 --- a/drivers/usb/media/stv680.c +++ b/drivers/usb/media/stv680.c @@ -67,6 +67,7 @@ #include <linux/errno.h> #include <linux/videodev.h> #include <linux/usb.h> +#include <linux/mutex.h> #include "stv680.h" @@ -1258,22 +1259,22 @@ static int stv680_mmap (struct file *file, struct vm_area_struct *vma) unsigned long size = vma->vm_end-vma->vm_start; unsigned long page, pos; - down (&stv680->lock); + mutex_lock(&stv680->lock); if (stv680->udev == NULL) { - up (&stv680->lock); + mutex_unlock(&stv680->lock); return -EIO; } if (size > (((STV680_NUMFRAMES * stv680->maxframesize) + PAGE_SIZE - 1) & ~(PAGE_SIZE - 1))) { - up (&stv680->lock); + mutex_unlock(&stv680->lock); return -EINVAL; } pos = (unsigned long) stv680->fbuf; while (size > 0) { page = vmalloc_to_pfn((void *)pos); if (remap_pfn_range(vma, start, page, PAGE_SIZE, PAGE_SHARED)) { - up (&stv680->lock); + mutex_unlock(&stv680->lock); return -EAGAIN; } start += PAGE_SIZE; @@ -1283,7 +1284,7 @@ static int stv680_mmap (struct file *file, struct vm_area_struct *vma) else size = 0; } - up (&stv680->lock); + mutex_unlock(&stv680->lock); return 0; } @@ -1409,7 +1410,7 @@ static int stv680_probe (struct usb_interface *intf, const struct usb_device_id memcpy (stv680->vdev->name, stv680->camera_name, strlen (stv680->camera_name)); init_waitqueue_head (&stv680->wq); - init_MUTEX (&stv680->lock); + mutex_init (&stv680->lock); wmb (); if (video_register_device (stv680->vdev, VFL_TYPE_GRABBER, video_nr) == -1) { |