/***************************************************************************
* V4L2 driver for ET61X[12]51 PC Camera Controllers *
* *
- * Copyright (C) 2006 by Luca Risolia <luca.risolia@studio.unibo.it> *
+ * Copyright (C) 2006-2007 by Luca Risolia <luca.risolia@studio.unibo.it> *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/param.h>
-#include <linux/moduleparam.h>
#include <linux/errno.h>
#include <linux/slab.h>
#include <linux/device.h>
#define ET61X251_MODULE_NAME "V4L2 driver for ET61X[12]51 " \
"PC Camera Controllers"
-#define ET61X251_MODULE_AUTHOR "(C) 2006 Luca Risolia"
+#define ET61X251_MODULE_AUTHOR "(C) 2006-2007 Luca Risolia"
#define ET61X251_AUTHOR_EMAIL "<luca.risolia@studio.unibo.it>"
#define ET61X251_MODULE_LICENSE "GPL"
-#define ET61X251_MODULE_VERSION "1:1.02"
-#define ET61X251_MODULE_VERSION_CODE KERNEL_VERSION(1, 0, 2)
+#define ET61X251_MODULE_VERSION "1:1.09"
+#define ET61X251_MODULE_VERSION_CODE KERNEL_VERSION(1, 1, 9)
/*****************************************************************************/
"\ndetected camera."
"\n 0 = do not force memory unmapping"
"\n 1 = force memory unmapping (save memory)"
- "\nDefault value is "__MODULE_STRING(SN9C102_FORCE_MUNMAP)"."
+ "\nDefault value is "__MODULE_STRING(ET61X251_FORCE_MUNMAP)"."
"\n");
static unsigned int frame_timeout[] = {[0 ... ET61X251_MAX_DEVICES-1] =
cam->nbuffers = count;
while (cam->nbuffers > 0) {
- if ((buff = vmalloc_32(cam->nbuffers * PAGE_ALIGN(imagesize))))
+ if ((buff = vmalloc_32_user(cam->nbuffers *
+ PAGE_ALIGN(imagesize))))
break;
cam->nbuffers--;
}
static int
-et61x251_i2c_wait(struct et61x251_device* cam, struct et61x251_sensor* sensor)
+et61x251_i2c_wait(struct et61x251_device* cam,
+ const struct et61x251_sensor* sensor)
{
int i, r;
int
et61x251_i2c_try_read(struct et61x251_device* cam,
- struct et61x251_sensor* sensor, u8 address)
+ const struct et61x251_sensor* sensor, u8 address)
{
struct usb_device* udev = cam->usbdev;
u8* data = cam->control_buffer;
int
et61x251_i2c_try_write(struct et61x251_device* cam,
- struct et61x251_sensor* sensor, u8 address, u8 value)
+ const struct et61x251_sensor* sensor, u8 address,
+ u8 value)
{
struct usb_device* udev = cam->usbdev;
u8* data = cam->control_buffer;
{
struct usb_device *udev = cam->usbdev;
struct urb* urb;
- const unsigned int wMaxPacketSize[] = {0, 256, 384, 512, 640, 768, 832,
- 864, 896, 920, 956, 980, 1000,
- 1022};
- const unsigned int psz = wMaxPacketSize[ET61X251_ALTERNATE_SETTING];
+ struct usb_host_interface* altsetting = usb_altnum_to_altsetting(
+ usb_ifnum_to_if(udev, 0),
+ ET61X251_ALTERNATE_SETTING);
+ const unsigned int psz = le16_to_cpu(altsetting->
+ endpoint[0].desc.wMaxPacketSize);
s8 i, j;
int err = 0;
return 0;
free_urbs:
- for (i = 0; (i < ET61X251_URBS) && cam->urb[i]; i++)
+ for (i = 0; (i < ET61X251_URBS) && cam->urb[i]; i++)
usb_free_urb(cam->urb[i]);
free_buffers:
if (len < 4) {
strncpy(str, buff, len);
- str[len+1] = '\0';
+ str[len] = '\0';
} else {
strncpy(str, buff, 4);
str[4] = '\0';
NOTE 2: buffers are PAGE_SIZE long
*/
-static ssize_t et61x251_show_reg(struct class_device* cd, char* buf)
+static ssize_t et61x251_show_reg(struct device* cd,
+ struct device_attribute *attr, char* buf)
{
struct et61x251_device* cam;
ssize_t count;
static ssize_t
-et61x251_store_reg(struct class_device* cd, const char* buf, size_t len)
+et61x251_store_reg(struct device* cd,
+ struct device_attribute *attr, const char* buf, size_t len)
{
struct et61x251_device* cam;
u8 index;
}
-static ssize_t et61x251_show_val(struct class_device* cd, char* buf)
+static ssize_t et61x251_show_val(struct device* cd,
+ struct device_attribute *attr, char* buf)
{
struct et61x251_device* cam;
ssize_t count;
static ssize_t
-et61x251_store_val(struct class_device* cd, const char* buf, size_t len)
+et61x251_store_val(struct device* cd, struct device_attribute *attr,
+ const char* buf, size_t len)
{
struct et61x251_device* cam;
u8 value;
}
-static ssize_t et61x251_show_i2c_reg(struct class_device* cd, char* buf)
+static ssize_t et61x251_show_i2c_reg(struct device* cd,
+ struct device_attribute *attr, char* buf)
{
struct et61x251_device* cam;
ssize_t count;
static ssize_t
-et61x251_store_i2c_reg(struct class_device* cd, const char* buf, size_t len)
+et61x251_store_i2c_reg(struct device* cd, struct device_attribute *attr,
+ const char* buf, size_t len)
{
struct et61x251_device* cam;
u8 index;
}
-static ssize_t et61x251_show_i2c_val(struct class_device* cd, char* buf)
+static ssize_t et61x251_show_i2c_val(struct device* cd,
+ struct device_attribute *attr, char* buf)
{
struct et61x251_device* cam;
ssize_t count;
static ssize_t
-et61x251_store_i2c_val(struct class_device* cd, const char* buf, size_t len)
+et61x251_store_i2c_val(struct device* cd, struct device_attribute *attr,
+ const char* buf, size_t len)
{
struct et61x251_device* cam;
u8 value;
}
-static CLASS_DEVICE_ATTR(reg, S_IRUGO | S_IWUSR,
- et61x251_show_reg, et61x251_store_reg);
-static CLASS_DEVICE_ATTR(val, S_IRUGO | S_IWUSR,
- et61x251_show_val, et61x251_store_val);
-static CLASS_DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR,
- et61x251_show_i2c_reg, et61x251_store_i2c_reg);
-static CLASS_DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR,
- et61x251_show_i2c_val, et61x251_store_i2c_val);
+static DEVICE_ATTR(reg, S_IRUGO | S_IWUSR,
+ et61x251_show_reg, et61x251_store_reg);
+static DEVICE_ATTR(val, S_IRUGO | S_IWUSR,
+ et61x251_show_val, et61x251_store_val);
+static DEVICE_ATTR(i2c_reg, S_IRUGO | S_IWUSR,
+ et61x251_show_i2c_reg, et61x251_store_i2c_reg);
+static DEVICE_ATTR(i2c_val, S_IRUGO | S_IWUSR,
+ et61x251_show_i2c_val, et61x251_store_i2c_val);
static int et61x251_create_sysfs(struct et61x251_device* cam)
{
- struct video_device *v4ldev = cam->v4ldev;
- int rc;
+ struct device *classdev = &(cam->v4ldev->class_dev);
+ int err = 0;
+
+ if ((err = device_create_file(classdev, &dev_attr_reg)))
+ goto err_out;
+ if ((err = device_create_file(classdev, &dev_attr_val)))
+ goto err_reg;
- rc = video_device_create_file(v4ldev, &class_device_attr_reg);
- if (rc) goto err;
- rc = video_device_create_file(v4ldev, &class_device_attr_val);
- if (rc) goto err_reg;
if (cam->sensor.sysfs_ops) {
- rc = video_device_create_file(v4ldev, &class_device_attr_i2c_reg);
- if (rc) goto err_val;
- rc = video_device_create_file(v4ldev, &class_device_attr_i2c_val);
- if (rc) goto err_i2c_reg;
+ if ((err = device_create_file(classdev, &dev_attr_i2c_reg)))
+ goto err_val;
+ if ((err = device_create_file(classdev, &dev_attr_i2c_val)))
+ goto err_i2c_reg;
}
- return 0;
-
err_i2c_reg:
- video_device_remove_file(v4ldev, &class_device_attr_i2c_reg);
+ if (cam->sensor.sysfs_ops)
+ device_remove_file(classdev, &dev_attr_i2c_reg);
err_val:
- video_device_remove_file(v4ldev, &class_device_attr_val);
+ device_remove_file(classdev, &dev_attr_val);
err_reg:
- video_device_remove_file(v4ldev, &class_device_attr_reg);
-err:
- return rc;
+ device_remove_file(classdev, &dev_attr_reg);
+err_out:
+ return err;
}
#endif /* CONFIG_VIDEO_ADV_DEBUG */
int err = 0;
if (!(cam->state & DEV_INITIALIZED)) {
- init_waitqueue_head(&cam->open);
+ mutex_init(&cam->open_mutex);
+ init_waitqueue_head(&cam->wait_open);
qctrl = s->qctrl;
rect = &(s->cropcap.defrect);
cam->compression.quality = ET61X251_COMPRESSION_QUALITY;
return 0;
}
+/*****************************************************************************/
-static void et61x251_release_resources(struct et61x251_device* cam)
+static void et61x251_release_resources(struct kref *kref)
{
+ struct et61x251_device *cam;
+
mutex_lock(&et61x251_sysfs_lock);
+ cam = container_of(kref, struct et61x251_device, kref);
+
DBG(2, "V4L2 device /dev/video%d deregistered", cam->v4ldev->minor);
video_set_drvdata(cam->v4ldev, NULL);
video_unregister_device(cam->v4ldev);
+ usb_put_dev(cam->usbdev);
+ kfree(cam->control_buffer);
+ kfree(cam);
mutex_unlock(&et61x251_sysfs_lock);
-
- kfree(cam->control_buffer);
}
-/*****************************************************************************/
static int et61x251_open(struct inode* inode, struct file* filp)
{
struct et61x251_device* cam;
int err = 0;
- /*
- This is the only safe way to prevent race conditions with
- disconnect
- */
- if (!down_read_trylock(&et61x251_disconnect))
+ if (!down_read_trylock(&et61x251_dev_lock))
return -ERESTARTSYS;
cam = video_get_drvdata(video_devdata(filp));
- if (mutex_lock_interruptible(&cam->dev_mutex)) {
- up_read(&et61x251_disconnect);
+ if (wait_for_completion_interruptible(&cam->probe)) {
+ up_read(&et61x251_dev_lock);
+ return -ERESTARTSYS;
+ }
+
+ kref_get(&cam->kref);
+
+ if (mutex_lock_interruptible(&cam->open_mutex)) {
+ kref_put(&cam->kref, et61x251_release_resources);
+ up_read(&et61x251_dev_lock);
return -ERESTARTSYS;
}
+ if (cam->state & DEV_DISCONNECTED) {
+ DBG(1, "Device not present");
+ err = -ENODEV;
+ goto out;
+ }
+
if (cam->users) {
- DBG(2, "Device /dev/video%d is busy...", cam->v4ldev->minor);
+ DBG(2, "Device /dev/video%d is already in use",
+ cam->v4ldev->minor);
+ DBG(3, "Simultaneous opens are not supported");
if ((filp->f_flags & O_NONBLOCK) ||
(filp->f_flags & O_NDELAY)) {
err = -EWOULDBLOCK;
goto out;
}
- mutex_unlock(&cam->dev_mutex);
- err = wait_event_interruptible_exclusive(cam->open,
- cam->state & DEV_DISCONNECTED
+ DBG(2, "A blocking open() has been requested. Wait for the "
+ "device to be released...");
+ up_read(&et61x251_dev_lock);
+ err = wait_event_interruptible_exclusive(cam->wait_open,
+ (cam->state & DEV_DISCONNECTED)
|| !cam->users);
- if (err) {
- up_read(&et61x251_disconnect);
- return err;
- }
+ down_read(&et61x251_dev_lock);
+ if (err)
+ goto out;
if (cam->state & DEV_DISCONNECTED) {
- up_read(&et61x251_disconnect);
- return -ENODEV;
+ err = -ENODEV;
+ goto out;
}
- mutex_lock(&cam->dev_mutex);
}
-
if (cam->state & DEV_MISCONFIGURED) {
err = et61x251_init(cam);
if (err) {
DBG(3, "Video device /dev/video%d is open", cam->v4ldev->minor);
out:
- mutex_unlock(&cam->dev_mutex);
- up_read(&et61x251_disconnect);
+ mutex_unlock(&cam->open_mutex);
+ if (err)
+ kref_put(&cam->kref, et61x251_release_resources);
+ up_read(&et61x251_dev_lock);
return err;
}
static int et61x251_release(struct inode* inode, struct file* filp)
{
- struct et61x251_device* cam = video_get_drvdata(video_devdata(filp));
+ struct et61x251_device* cam;
- mutex_lock(&cam->dev_mutex); /* prevent disconnect() to be called */
+ down_write(&et61x251_dev_lock);
- et61x251_stop_transfer(cam);
+ cam = video_get_drvdata(video_devdata(filp));
+ et61x251_stop_transfer(cam);
et61x251_release_buffers(cam);
-
- if (cam->state & DEV_DISCONNECTED) {
- et61x251_release_resources(cam);
- usb_put_dev(cam->usbdev);
- mutex_unlock(&cam->dev_mutex);
- kfree(cam);
- return 0;
- }
-
cam->users--;
- wake_up_interruptible_nr(&cam->open, 1);
+ wake_up_interruptible_nr(&cam->wait_open, 1);
DBG(3, "Video device /dev/video%d closed", cam->v4ldev->minor);
- mutex_unlock(&cam->dev_mutex);
+ kref_put(&cam->kref, et61x251_release_resources);
+
+ up_write(&et61x251_dev_lock);
return 0;
}
DBG(3, "Close and open the device again to choose the read "
"method");
mutex_unlock(&cam->fileop_mutex);
- return -EINVAL;
+ return -EBUSY;
}
if (cam->io == IO_NONE) {
return -EIO;
}
- if (cam->io != IO_MMAP || !(vma->vm_flags & VM_WRITE) ||
+ if (!(vma->vm_flags & (VM_WRITE | VM_READ))) {
+ mutex_unlock(&cam->fileop_mutex);
+ return -EACCES;
+ }
+
+ if (cam->io != IO_MMAP ||
size != PAGE_ALIGN(cam->frame[0].buf.length)) {
mutex_unlock(&cam->fileop_mutex);
return -EINVAL;
vma->vm_ops = &et61x251_vm_ops;
vma->vm_private_data = &cam->frame[i];
-
et61x251_vm_open(vma);
mutex_unlock(&cam->fileop_mutex);
if (cam->frame[i].vma_use_count) {
DBG(3, "VIDIOC_S_CROP failed. "
"Unmap the buffers first.");
- return -EINVAL;
+ return -EBUSY;
}
/* Preserve R,G or B origin */
rect->left = (s->_rect.left & 1L) ? rect->left | 1L : rect->left & ~1L;
rect->top = (s->_rect.top & 1L) ? rect->top | 1L : rect->top & ~1L;
- if (rect->width < 4)
- rect->width = 4;
- if (rect->height < 4)
- rect->height = 4;
+ if (rect->width < 16)
+ rect->width = 16;
+ if (rect->height < 16)
+ rect->height = 16;
if (rect->width > bounds->width)
rect->width = bounds->width;
if (rect->height > bounds->height)
if (rect->top + rect->height > bounds->top + bounds->height)
rect->top = bounds->top+bounds->height - rect->height;
- rect->width &= ~3L;
- rect->height &= ~3L;
+ rect->width &= ~15L;
+ rect->height &= ~15L;
if (ET61X251_PRESERVE_IMGSCALE) {
/* Calculate the actual scaling factor */
}
+static int
+et61x251_vidioc_enum_framesizes(struct et61x251_device* cam, void __user * arg)
+{
+ struct v4l2_frmsizeenum frmsize;
+
+ if (copy_from_user(&frmsize, arg, sizeof(frmsize)))
+ return -EFAULT;
+
+ if (frmsize.index != 0)
+ return -EINVAL;
+
+ if (frmsize.pixel_format != V4L2_PIX_FMT_ET61X251 &&
+ frmsize.pixel_format != V4L2_PIX_FMT_SBGGR8)
+ return -EINVAL;
+
+ frmsize.type = V4L2_FRMSIZE_TYPE_STEPWISE;
+ frmsize.stepwise.min_width = frmsize.stepwise.step_width = 16;
+ frmsize.stepwise.min_height = frmsize.stepwise.step_height = 16;
+ frmsize.stepwise.max_width = cam->sensor.cropcap.bounds.width;
+ frmsize.stepwise.max_height = cam->sensor.cropcap.bounds.height;
+ memset(&frmsize.reserved, 0, sizeof(frmsize.reserved));
+
+ if (copy_to_user(arg, &frmsize, sizeof(frmsize)))
+ return -EFAULT;
+
+ return 0;
+}
+
+
static int
et61x251_vidioc_enum_fmt(struct et61x251_device* cam, void __user * arg)
{
if (copy_from_user(&fmtd, arg, sizeof(fmtd)))
return -EFAULT;
+ if (fmtd.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
+ return -EINVAL;
+
if (fmtd.index == 0) {
strcpy(fmtd.description, "bayer rgb");
fmtd.pixelformat = V4L2_PIX_FMT_SBGGR8;
if (format.type != V4L2_BUF_TYPE_VIDEO_CAPTURE)
return -EINVAL;
+ pfmt->colorspace = (pfmt->pixelformat == V4L2_PIX_FMT_ET61X251) ?
+ 0 : V4L2_COLORSPACE_SRGB;
pfmt->bytesperline = (pfmt->pixelformat==V4L2_PIX_FMT_ET61X251)
? 0 : (pfmt->width * pfmt->priv) / 8;
pfmt->sizeimage = pfmt->height * ((pfmt->width*pfmt->priv)/8);
rect.width = scale * pix->width;
rect.height = scale * pix->height;
- if (rect.width < 4)
- rect.width = 4;
- if (rect.height < 4)
- rect.height = 4;
+ if (rect.width < 16)
+ rect.width = 16;
+ if (rect.height < 16)
+ rect.height = 16;
if (rect.width > bounds->left + bounds->width - rect.left)
rect.width = bounds->left + bounds->width - rect.left;
if (rect.height > bounds->top + bounds->height - rect.top)
rect.height = bounds->top + bounds->height - rect.top;
- rect.width &= ~3L;
- rect.height &= ~3L;
+ rect.width &= ~15L;
+ rect.height &= ~15L;
{ /* adjust the scaling factor */
u32 a, b;
pix->pixelformat != V4L2_PIX_FMT_SBGGR8)
pix->pixelformat = pfmt->pixelformat;
pix->priv = pfmt->priv; /* bpp */
+ pix->colorspace = (pix->pixelformat == V4L2_PIX_FMT_ET61X251) ?
+ 0 : V4L2_COLORSPACE_SRGB;
pix->colorspace = pfmt->colorspace;
pix->bytesperline = (pix->pixelformat == V4L2_PIX_FMT_ET61X251)
? 0 : (pix->width * pix->priv) / 8;
if (cam->frame[i].vma_use_count) {
DBG(3, "VIDIOC_S_FMT failed. "
"Unmap the buffers first.");
- return -EINVAL;
+ return -EBUSY;
}
if (cam->stream == STREAM_ON)
if (cam->io == IO_READ) {
DBG(3, "Close and open the device again to choose the mmap "
"I/O method");
- return -EINVAL;
+ return -EBUSY;
}
for (i = 0; i < cam->nbuffers; i++)
if (cam->frame[i].vma_use_count) {
DBG(3, "VIDIOC_REQBUFS failed. "
"Previous buffers are still mapped.");
- return -EINVAL;
+ return -EBUSY;
}
if (cam->stream == STREAM_ON)
if (type != V4L2_BUF_TYPE_VIDEO_CAPTURE || cam->io != IO_MMAP)
return -EINVAL;
- if (list_empty(&cam->inqueue))
- return -EINVAL;
-
cam->stream = STREAM_ON;
DBG(3, "Stream on");
case VIDIOC_S_FMT:
return et61x251_vidioc_try_s_fmt(cam, cmd, arg);
+ case VIDIOC_ENUM_FRAMESIZES:
+ return et61x251_vidioc_enum_framesizes(cam, arg);
+
case VIDIOC_G_JPEGCOMP:
return et61x251_vidioc_g_jpegcomp(cam, arg);
case VIDIOC_QUERYSTD:
case VIDIOC_ENUMSTD:
case VIDIOC_QUERYMENU:
+ case VIDIOC_ENUM_FRAMEINTERVALS:
return -EINVAL;
default:
.open = et61x251_open,
.release = et61x251_release,
.ioctl = et61x251_ioctl,
+ .compat_ioctl = v4l_compat_ioctl32,
.read = et61x251_read,
.poll = et61x251_poll,
.mmap = et61x251_mmap,
goto fail;
}
- mutex_init(&cam->dev_mutex);
-
DBG(2, "ET61X[12]51 PC Camera Controller detected "
- "(vid/pid 0x%04X/0x%04X)",id->idVendor, id->idProduct);
+ "(vid/pid 0x%04X:0x%04X)",id->idVendor, id->idProduct);
for (i = 0; et61x251_sensor_table[i]; i++) {
err = et61x251_sensor_table[i](cam);
cam->v4ldev->release = video_device_release;
video_set_drvdata(cam->v4ldev, cam);
- mutex_lock(&cam->dev_mutex);
+ init_completion(&cam->probe);
err = video_register_device(cam->v4ldev, VFL_TYPE_GRABBER,
video_nr[dev_nr]);
DBG(1, "Free /dev/videoX node not found");
video_nr[dev_nr] = -1;
dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0;
- mutex_unlock(&cam->dev_mutex);
+ complete_all(&cam->probe);
goto fail;
}
#ifdef CONFIG_VIDEO_ADV_DEBUG
err = et61x251_create_sysfs(cam);
- if (err)
- goto fail2;
- DBG(2, "Optional device control through 'sysfs' interface ready");
+ if (!err)
+ DBG(2, "Optional device control through 'sysfs' "
+ "interface ready");
+ else
+ DBG(2, "Failed to create 'sysfs' interface for optional "
+ "device controlling. Error #%d", err);
+#else
+ DBG(2, "Optional device control through 'sysfs' interface disabled");
+ DBG(3, "Compile the kernel with the 'CONFIG_VIDEO_ADV_DEBUG' "
+ "configuration option to enable it.");
#endif
usb_set_intfdata(intf, cam);
+ kref_init(&cam->kref);
+ usb_get_dev(cam->usbdev);
- mutex_unlock(&cam->dev_mutex);
+ complete_all(&cam->probe);
return 0;
-#ifdef CONFIG_VIDEO_ADV_DEBUG
-fail2:
- video_nr[dev_nr] = -1;
- dev_nr = (dev_nr < ET61X251_MAX_DEVICES-1) ? dev_nr+1 : 0;
- mutex_unlock(&cam->dev_mutex);
- video_unregister_device(cam->v4ldev);
-#endif
fail:
if (cam) {
kfree(cam->control_buffer);
static void et61x251_usb_disconnect(struct usb_interface* intf)
{
- struct et61x251_device* cam = usb_get_intfdata(intf);
-
- if (!cam)
- return;
+ struct et61x251_device* cam;
- down_write(&et61x251_disconnect);
+ down_write(&et61x251_dev_lock);
- mutex_lock(&cam->dev_mutex);
+ cam = usb_get_intfdata(intf);
DBG(2, "Disconnecting %s...", cam->v4ldev->name);
- wake_up_interruptible_all(&cam->open);
-
if (cam->users) {
DBG(2, "Device /dev/video%d is open! Deregistration and "
- "memory deallocation are deferred on close.",
+ "memory deallocation are deferred.",
cam->v4ldev->minor);
cam->state |= DEV_MISCONFIGURED;
et61x251_stop_transfer(cam);
cam->state |= DEV_DISCONNECTED;
wake_up_interruptible(&cam->wait_frame);
wake_up(&cam->wait_stream);
- usb_get_dev(cam->usbdev);
- } else {
+ } else
cam->state |= DEV_DISCONNECTED;
- et61x251_release_resources(cam);
- }
- mutex_unlock(&cam->dev_mutex);
+ wake_up_interruptible_all(&cam->wait_open);
- if (!cam->users)
- kfree(cam);
+ kref_put(&cam->kref, et61x251_release_resources);
- up_write(&et61x251_disconnect);
+ up_write(&et61x251_dev_lock);
}
projects / linux-2.6-omap-h63xx.git / blobdiff