config VIDEO_DEV
tristate "Video For Linux"
- depends on BKL # used in many drivers for ioctl handling, need to kill
---help---
V4L core support for video capture and overlay devices, webcams and
AM/FM radio cards.
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/firmware.h>
-#include <linux/smp_lock.h>
#include <linux/vmalloc.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
dev = h;
}
- if (dev == NULL) {
- unlock_kernel();
+ if (dev == NULL)
return -ENODEV;
- }
+
mutex_lock(&dev->lock);
/* allocate + initialize per filehandle data */
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/firmware.h>
-#include <linux/smp_lock.h>
#include <linux/slab.h>
#include <media/v4l2-common.h>
#include <media/v4l2-ioctl.h>
/* allocate + initialize per filehandle data */
fh = kzalloc(sizeof(*fh), GFP_KERNEL);
- if (NULL == fh) {
- unlock_kernel();
+ if (!fh)
return -ENOMEM;
- }
-
- lock_kernel();
file->private_data = fh;
fh->dev = dev;
V4L2_FIELD_INTERLACED,
sizeof(struct cx23885_buffer),
fh, NULL);
- unlock_kernel();
-
return 0;
}
#include <linux/kmod.h>
#include <linux/kernel.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/interrupt.h>
#include <linux/delay.h>
#include <linux/kthread.h>
if (NULL == fh)
return -ENOMEM;
- lock_kernel();
-
file->private_data = fh;
fh->dev = dev;
fh->radio = radio;
dprintk(1, "post videobuf_queue_init()\n");
- unlock_kernel();
-
return 0;
}
#include <linux/init.h>
#include <linux/vmalloc.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/pagemap.h>
#include <linux/usb.h>
#include "se401.h"
struct usb_se401 *se401 = (struct usb_se401 *)dev;
int err = 0;
- lock_kernel();
+ mutex_lock(&se401->lock);
if (se401->user) {
- unlock_kernel();
+ mutex_unlock(&se401->lock);
return -EBUSY;
}
se401->fbuf = rvmalloc(se401->maxframesize * SE401_NUMFRAMES);
else
err = -ENOMEM;
se401->user = !err;
- unlock_kernel();
+ mutex_unlock(&se401->lock);
return err;
}
#include <linux/kernel.h>
#include <linux/errno.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/usb.h>
#include <linux/mm.h>
vdev = video_devdata(fp);
dev = vdev_to_camera(vdev);
- lock_kernel();
if (dev == NULL || !is_present(dev)) {
- unlock_kernel();
return -ENXIO;
}
fp->private_data = dev;
usb_autopm_get_interface(dev->interface);
- unlock_kernel();
return 0;
}
#include <linux/string.h>
#include <linux/types.h>
#include <linux/firmware.h>
-#include <linux/smp_lock.h>
#include "vendorcmds.h"
#include "pd-common.h"
/*unregister v4l2 device */
v4l2_device_unregister(&pd->v4l2_dev);
- lock_kernel();
- {
- pd_dvb_usb_device_exit(pd);
- poseidon_fm_exit(pd);
+ pd_dvb_usb_device_exit(pd);
+ poseidon_fm_exit(pd);
- poseidon_audio_free(pd);
- pd_video_exit(pd);
- }
- unlock_kernel();
+ poseidon_audio_free(pd);
+ pd_video_exit(pd);
usb_set_intfdata(interface, NULL);
kref_put(&pd->kref, poseidon_delete);
#include <linux/vmalloc.h>
#include <linux/mm.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/mutex.h>
#include <linux/firmware.h>
#include <linux/ihex.h>
return -EINVAL;
}
- /* the videodev_lock held above us protects us from
- * simultaneous opens...for now. we probably shouldn't
- * rely on this fact forever.
+ /* cam_lock/open_count protects us from simultaneous opens
+ * ... for now. we probably shouldn't rely on this fact forever.
*/
- lock_kernel();
+ mutex_lock(&cam->cam_lock);
if (cam->open_count > 0) {
printk(KERN_INFO
"vicam_open called on already opened camera");
- unlock_kernel();
+ mutex_unlock(&cam->cam_lock);
return -EBUSY;
}
cam->raw_image = kmalloc(VICAM_MAX_READ_SIZE, GFP_KERNEL);
if (!cam->raw_image) {
- unlock_kernel();
+ mutex_unlock(&cam->cam_lock);
return -ENOMEM;
}
cam->framebuf = rvmalloc(VICAM_MAX_FRAME_SIZE * VICAM_FRAMES);
if (!cam->framebuf) {
kfree(cam->raw_image);
- unlock_kernel();
+ mutex_unlock(&cam->cam_lock);
return -ENOMEM;
}
if (!cam->cntrlbuf) {
kfree(cam->raw_image);
rvfree(cam->framebuf, VICAM_MAX_FRAME_SIZE * VICAM_FRAMES);
- unlock_kernel();
+ mutex_unlock(&cam->cam_lock);
return -ENOMEM;
}
+ cam->needsDummyRead = 1;
+ cam->open_count++;
+
+ file->private_data = cam;
+ mutex_unlock(&cam->cam_lock);
+
+
// First upload firmware, then turn the camera on
if (!cam->is_initialized) {
set_camera_power(cam, 1);
- cam->needsDummyRead = 1;
- cam->open_count++;
-
- file->private_data = cam;
- unlock_kernel();
-
return 0;
}
#include <linux/init.h>
#include <linux/kmod.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include <asm/system.h>
mutex_unlock(vdev->lock);
} else if (vdev->fops->ioctl) {
/* TODO: convert all drivers to unlocked_ioctl */
- lock_kernel();
+ static DEFINE_MUTEX(v4l2_ioctl_mutex);
+
+ mutex_lock(&v4l2_ioctl_mutex);
if (video_is_registered(vdev))
ret = vdev->fops->ioctl(filp, cmd, arg);
- unlock_kernel();
+ mutex_unlock(&v4l2_ioctl_mutex);
} else
ret = -ENOTTY;
struct videocodec *vfe; /* video front end */
struct mutex resource_lock; /* prevent evil stuff */
+ struct mutex other_lock; /* please merge with above */
u8 initialized; /* flag if zoran has been correctly initialized */
int user; /* number of current users */
snprintf(ZR_DEVNAME(zr), sizeof(ZR_DEVNAME(zr)), "MJPEG[%u]", zr->id);
spin_lock_init(&zr->spinlock);
mutex_init(&zr->resource_lock);
+ mutex_init(&zr->other_lock);
if (pci_enable_device(pdev))
goto zr_unreg;
pci_read_config_byte(zr->pci_dev, PCI_CLASS_REVISION, &zr->revision);
#include <linux/module.h>
#include <linux/delay.h>
#include <linux/slab.h>
-#include <linux/smp_lock.h>
#include <linux/pci.h>
#include <linux/vmalloc.h>
#include <linux/wait.h>
dprintk(2, KERN_INFO "%s: %s(%s, pid=[%d]), users(-)=%d\n",
ZR_DEVNAME(zr), __func__, current->comm, task_pid_nr(current), zr->user + 1);
- lock_kernel();
+ mutex_lock(&zr->other_lock);
if (zr->user >= 2048) {
dprintk(1, KERN_ERR "%s: too many users (%d) on device\n",
file->private_data = fh;
fh->zr = zr;
zoran_open_init_session(fh);
- unlock_kernel();
+ mutex_unlock(&zr->other_lock);
return 0;
fail_fh:
kfree(fh);
fail_unlock:
- unlock_kernel();
+ mutex_unlock(&zr->other_lock);
dprintk(2, KERN_INFO "%s: open failed (%d), users(-)=%d\n",
ZR_DEVNAME(zr), res, zr->user);
/* kernel locks (fs/device.c), so don't do that ourselves
* (prevents deadlocks) */
- /*mutex_lock(&zr->resource_lock);*/
+ mutex_lock(&zr->other_lock);
zoran_close_end_session(fh);
encoder_call(zr, video, s_routing, 2, 0, 0);
}
}
+ mutex_unlock(&zr->other_lock);
file->private_data = NULL;
kfree(fh->overlay_mask);
#endif
};
+/* please use zr->resource_lock consistently and kill this wrapper */
+static long zoran_ioctl(struct file *file, unsigned int cmd,
+ unsigned long arg)
+{
+ struct zoran_fh *fh = file->private_data;
+ struct zoran *zr = fh->zr;
+ int ret;
+
+ mutex_lock(&zr->other_lock);
+ ret = video_ioctl2(file, cmd, arg);
+ mutex_unlock(&zr->other_lock);
+
+ return ret;
+}
+
static const struct v4l2_file_operations zoran_fops = {
.owner = THIS_MODULE,
.open = zoran_open,
.release = zoran_close,
- .ioctl = video_ioctl2,
+ .unlocked_ioctl = zoran_ioctl,
.read = zoran_read,
.write = zoran_write,
.mmap = zoran_mmap,
git.openpandora.org / pandora-kernel.git / commitdiff