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path: root/drivers/usb/media/usbvideo.c
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Diffstat (limited to 'drivers/usb/media/usbvideo.c')
-rw-r--r--drivers/usb/media/usbvideo.c31
1 files changed, 15 insertions, 16 deletions
diff --git a/drivers/usb/media/usbvideo.c b/drivers/usb/media/usbvideo.c
index 63a72e550a1b..0b51fae720a9 100644
--- a/drivers/usb/media/usbvideo.c
+++ b/drivers/usb/media/usbvideo.c
@@ -690,14 +690,13 @@ int usbvideo_register(
}
base_size = num_cams * sizeof(struct uvd) + sizeof(struct usbvideo);
- cams = (struct usbvideo *) kmalloc(base_size, GFP_KERNEL);
+ cams = (struct usbvideo *) kzalloc(base_size, GFP_KERNEL);
if (cams == NULL) {
err("Failed to allocate %d. bytes for usbvideo struct", base_size);
return -ENOMEM;
}
dbg("%s: Allocated $%p (%d. bytes) for %d. cameras",
__FUNCTION__, cams, base_size, num_cams);
- memset(cams, 0, base_size);
/* Copy callbacks, apply defaults for those that are not set */
memmove(&cams->cb, cbTbl, sizeof(cams->cb));
@@ -715,7 +714,7 @@ int usbvideo_register(
cams->md_module = md;
if (cams->md_module == NULL)
warn("%s: module == NULL!", __FUNCTION__);
- init_MUTEX(&cams->lock); /* to 1 == available */
+ mutex_init(&cams->lock); /* to 1 == available */
for (i = 0; i < num_cams; i++) {
struct uvd *up = &cams->cam[i];
@@ -863,7 +862,7 @@ static void usbvideo_Disconnect(struct usb_interface *intf)
if (uvd->debug > 0)
info("%s(%p.)", __FUNCTION__, intf);
- down(&uvd->lock);
+ mutex_lock(&uvd->lock);
uvd->remove_pending = 1; /* Now all ISO data will be ignored */
/* At this time we ask to cancel outstanding URBs */
@@ -883,7 +882,7 @@ static void usbvideo_Disconnect(struct usb_interface *intf)
info("%s: In use, disconnect pending.", __FUNCTION__);
else
usbvideo_CameraRelease(uvd);
- up(&uvd->lock);
+ mutex_unlock(&uvd->lock);
info("USB camera disconnected.");
usbvideo_ClientDecModCount(uvd);
@@ -930,19 +929,19 @@ static int usbvideo_find_struct(struct usbvideo *cams)
err("No usbvideo handle?");
return -1;
}
- down(&cams->lock);
+ mutex_lock(&cams->lock);
for (u = 0; u < cams->num_cameras; u++) {
struct uvd *uvd = &cams->cam[u];
if (!uvd->uvd_used) /* This one is free */
{
uvd->uvd_used = 1; /* In use now */
- init_MUTEX(&uvd->lock); /* to 1 == available */
+ mutex_init(&uvd->lock); /* to 1 == available */
uvd->dev = NULL;
rv = u;
break;
}
}
- up(&cams->lock);
+ mutex_unlock(&cams->lock);
return rv;
}
@@ -984,7 +983,7 @@ struct uvd *usbvideo_AllocateDevice(struct usbvideo *cams)
/* Not relying upon caller we increase module counter ourselves */
usbvideo_ClientIncModCount(uvd);
- down(&uvd->lock);
+ mutex_lock(&uvd->lock);
for (i=0; i < USBVIDEO_NUMSBUF; i++) {
uvd->sbuf[i].urb = usb_alloc_urb(FRAMES_PER_DESC, GFP_KERNEL);
if (uvd->sbuf[i].urb == NULL) {
@@ -1007,7 +1006,7 @@ struct uvd *usbvideo_AllocateDevice(struct usbvideo *cams)
* return control to the client's probe function right now.
*/
allocate_done:
- up (&uvd->lock);
+ mutex_unlock(&uvd->lock);
usbvideo_ClientDecModCount(uvd);
return uvd;
}
@@ -1121,7 +1120,7 @@ static int usbvideo_v4l_open(struct inode *inode, struct file *file)
info("%s($%p)", __FUNCTION__, dev);
usbvideo_ClientIncModCount(uvd);
- down(&uvd->lock);
+ mutex_lock(&uvd->lock);
if (uvd->user) {
err("%s: Someone tried to open an already opened device!", __FUNCTION__);
@@ -1202,7 +1201,7 @@ static int usbvideo_v4l_open(struct inode *inode, struct file *file)
}
}
}
- up(&uvd->lock);
+ mutex_unlock(&uvd->lock);
if (errCode != 0)
usbvideo_ClientDecModCount(uvd);
if (uvd->debug > 0)
@@ -1231,7 +1230,7 @@ static int usbvideo_v4l_close(struct inode *inode, struct file *file)
if (uvd->debug > 1)
info("%s($%p)", __FUNCTION__, dev);
- down(&uvd->lock);
+ mutex_lock(&uvd->lock);
GET_CALLBACK(uvd, stopDataPump)(uvd);
usbvideo_rvfree(uvd->fbuf, uvd->fbuf_size);
uvd->fbuf = NULL;
@@ -1252,7 +1251,7 @@ static int usbvideo_v4l_close(struct inode *inode, struct file *file)
info("usbvideo_v4l_close: Final disconnect.");
usbvideo_CameraRelease(uvd);
}
- up(&uvd->lock);
+ mutex_unlock(&uvd->lock);
usbvideo_ClientDecModCount(uvd);
if (uvd->debug > 1)
@@ -1512,7 +1511,7 @@ static ssize_t usbvideo_v4l_read(struct file *file, char __user *buf,
if (uvd->debug >= 1)
info("%s: %Zd. bytes, noblock=%d.", __FUNCTION__, count, noblock);
- down(&uvd->lock);
+ mutex_lock(&uvd->lock);
/* See if a frame is completed, then use it. */
for(i = 0; i < USBVIDEO_NUMFRAMES; i++) {
@@ -1644,7 +1643,7 @@ static ssize_t usbvideo_v4l_read(struct file *file, char __user *buf,
}
}
read_done:
- up(&uvd->lock);
+ mutex_unlock(&uvd->lock);
return count;
}