lirc_register_driver() takes a struct lirc_driver argument, it then
allocates a new struct irctl which contains another struct lirc_driver
and then copies it over.
By moving the members of struct irctl to struct lirc_driver, we avoid the
extra allocation and we can remove struct irctl completely. We also
remove the duplicate chunk_size member.
In addition, the members of irctl are now visible elsewhere.
Signed-off-by: Sean Young <sean@xxxxxxxx>
---
drivers/media/rc/ir-lirc-codec.c | 1 -
drivers/media/rc/lirc_dev.c | 317 ++++++++++++++------------------
drivers/staging/media/lirc/lirc_sasem.c | 1 -
include/media/lirc_dev.h | 25 +++
4 files changed, 168 insertions(+), 176 deletions(-)
diff --git a/drivers/media/rc/ir-lirc-codec.c b/drivers/media/rc/ir-lirc-codec.c
index c3a2a6d..b78a402 100644
--- a/drivers/media/rc/ir-lirc-codec.c
+++ b/drivers/media/rc/ir-lirc-codec.c
@@ -424,7 +424,6 @@ int ir_lirc_unregister(struct rc_dev *dev)
lirc_unregister_driver(lirc->drv->minor);
lirc_buffer_free(lirc->drv->rbuf);
kfree(lirc->drv->rbuf);
- kfree(lirc->drv);
return 0;
}
diff --git a/drivers/media/rc/lirc_dev.c b/drivers/media/rc/lirc_dev.c
index 5884f0e..379e9d4 100644
--- a/drivers/media/rc/lirc_dev.c
+++ b/drivers/media/rc/lirc_dev.c
@@ -47,24 +47,9 @@
static dev_t lirc_base_dev;
-struct irctl {
- struct lirc_driver d;
- int attached;
- int open;
-
- struct mutex irctl_lock;
- struct lirc_buffer *buf;
- unsigned int chunk_size;
-
- struct cdev *cdev;
-
- struct task_struct *task;
- long jiffies_to_wait;
-};
-
static DEFINE_MUTEX(lirc_dev_lock);
-static struct irctl *irctls[MAX_IRCTL_DEVICES];
+static struct lirc_driver *irctls[MAX_IRCTL_DEVICES];
/* Only used for sysfs but defined to void otherwise */
static struct class *lirc_class;
@@ -72,33 +57,27 @@ static struct class *lirc_class;
/* helper function
* initializes the irctl structure
*/
-static void lirc_irctl_init(struct irctl *ir)
-{
- mutex_init(&ir->irctl_lock);
- ir->d.minor = NOPLUG;
-}
-
-static void lirc_irctl_cleanup(struct irctl *ir)
+static void lirc_irctl_cleanup(struct lirc_driver *d)
{
- device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), ir->d.minor));
+ device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), d->minor));
- if (ir->buf != ir->d.rbuf) {
- lirc_buffer_free(ir->buf);
- kfree(ir->buf);
+ if (d->buf != d->rbuf) {
+ lirc_buffer_free(d->buf);
+ kfree(d->buf);
}
- ir->buf = NULL;
+ d->buf = NULL;
}
/* helper function
* reads key codes from driver and puts them into buffer
* returns 0 on success
*/
-static int lirc_add_to_buf(struct irctl *ir)
+static int lirc_add_to_buf(struct lirc_driver *d)
{
int res;
int got_data = -1;
- if (!ir->d.add_to_buf)
+ if (!d->add_to_buf)
return 0;
/*
@@ -107,31 +86,31 @@ static int lirc_add_to_buf(struct irctl *ir)
*/
do {
got_data++;
- res = ir->d.add_to_buf(ir->d.data, ir->buf);
+ res = d->add_to_buf(d->data, d->buf);
} while (!res);
if (res == -ENODEV)
- kthread_stop(ir->task);
+ kthread_stop(d->task);
return got_data ? 0 : res;
}
/* main function of the polling thread
*/
-static int lirc_thread(void *irctl)
+static int lirc_thread(void *lirc_driver)
{
- struct irctl *ir = irctl;
+ struct lirc_driver *d = lirc_driver;
do {
- if (ir->open) {
- if (ir->jiffies_to_wait) {
+ if (d->open) {
+ if (d->jiffies_to_wait) {
set_current_state(TASK_INTERRUPTIBLE);
- schedule_timeout(ir->jiffies_to_wait);
+ schedule_timeout(d->jiffies_to_wait);
}
if (kthread_should_stop())
break;
- if (!lirc_add_to_buf(ir))
- wake_up_interruptible(&ir->buf->wait_poll);
+ if (!lirc_add_to_buf(d))
+ wake_up_interruptible(&d->buf->wait_poll);
} else {
set_current_state(TASK_INTERRUPTIBLE);
schedule();
@@ -141,7 +120,6 @@ static int lirc_thread(void *irctl)
return 0;
}
-
static const struct file_operations lirc_dev_fops = {
.owner = THIS_MODULE,
.read = lirc_dev_fop_read,
@@ -153,9 +131,8 @@ static const struct file_operations lirc_dev_fops = {
.llseek = noop_llseek,
};
-static int lirc_cdev_add(struct irctl *ir)
+static int lirc_cdev_add(struct lirc_driver *d)
{
- struct lirc_driver *d = &ir->d;
struct cdev *cdev;
int retval;
@@ -178,7 +155,7 @@ static int lirc_cdev_add(struct irctl *ir)
if (retval)
goto err_out;
- ir->cdev = cdev;
+ d->cdev = cdev;
return 0;
@@ -187,13 +164,12 @@ static int lirc_cdev_add(struct irctl *ir)
return retval;
}
-static int lirc_allocate_buffer(struct irctl *ir)
+static int lirc_allocate_buffer(struct lirc_driver *d)
{
int err = 0;
int bytes_in_key;
unsigned int chunk_size;
unsigned int buffer_size;
- struct lirc_driver *d = &ir->d;
mutex_lock(&lirc_dev_lock);
@@ -203,21 +179,21 @@ static int lirc_allocate_buffer(struct irctl *ir)
chunk_size = d->chunk_size ? d->chunk_size : bytes_in_key;
if (d->rbuf) {
- ir->buf = d->rbuf;
+ d->buf = d->rbuf;
} else {
- ir->buf = kmalloc(sizeof(struct lirc_buffer), GFP_KERNEL);
- if (!ir->buf) {
+ d->buf = kmalloc(sizeof(*d->buf), GFP_KERNEL);
+ if (!d->buf) {
err = -ENOMEM;
goto out;
}
- err = lirc_buffer_init(ir->buf, chunk_size, buffer_size);
+ err = lirc_buffer_init(d->buf, chunk_size, buffer_size);
if (err) {
- kfree(ir->buf);
+ kfree(d->buf);
goto out;
}
}
- ir->chunk_size = ir->buf->chunk_size;
+ d->chunk_size = d->buf->chunk_size;
out:
mutex_unlock(&lirc_dev_lock);
@@ -227,7 +203,6 @@ static int lirc_allocate_buffer(struct irctl *ir)
static int lirc_allocate_driver(struct lirc_driver *d)
{
- struct irctl *ir;
int minor;
int err;
@@ -289,13 +264,8 @@ static int lirc_allocate_driver(struct lirc_driver *d)
goto out_lock;
}
- ir = kzalloc(sizeof(struct irctl), GFP_KERNEL);
- if (!ir) {
- err = -ENOMEM;
- goto out_lock;
- }
- lirc_irctl_init(ir);
- irctls[minor] = ir;
+ mutex_init(&d->irctl_lock);
+ irctls[minor] = d;
d->minor = minor;
/* some safety check 8-) */
@@ -304,18 +274,16 @@ static int lirc_allocate_driver(struct lirc_driver *d)
if (d->features == 0)
d->features = LIRC_CAN_REC_LIRCCODE;
- ir->d = *d;
-
- device_create(lirc_class, ir->d.dev,
- MKDEV(MAJOR(lirc_base_dev), ir->d.minor), NULL,
- "lirc%u", ir->d.minor);
+ device_create(lirc_class, d->dev,
+ MKDEV(MAJOR(lirc_base_dev), d->minor), NULL,
+ "lirc%u", d->minor);
if (d->sample_rate) {
- ir->jiffies_to_wait = HZ / d->sample_rate;
+ d->jiffies_to_wait = HZ / d->sample_rate;
/* try to fire up polling thread */
- ir->task = kthread_run(lirc_thread, (void *)ir, "lirc_dev");
- if (IS_ERR(ir->task)) {
+ d->task = kthread_run(lirc_thread, d, "lirc_dev");
+ if (IS_ERR(d->task)) {
dev_err(d->dev, "cannot run thread for minor = %d\n",
d->minor);
err = -ECHILD;
@@ -323,22 +291,22 @@ static int lirc_allocate_driver(struct lirc_driver *d)
}
} else {
/* it means - wait for external event in task queue */
- ir->jiffies_to_wait = 0;
+ d->jiffies_to_wait = 0;
}
- err = lirc_cdev_add(ir);
+ err = lirc_cdev_add(d);
if (err)
goto out_sysfs;
- ir->attached = 1;
+ d->attached = 1;
mutex_unlock(&lirc_dev_lock);
- dev_info(ir->d.dev, "lirc_dev: driver %s registered at minor = %d\n",
- ir->d.name, ir->d.minor);
+ dev_info(d->dev, "lirc_dev: driver %s registered at minor = %d\n",
+ d->name, d->minor);
return minor;
out_sysfs:
- device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), ir->d.minor));
+ device_destroy(lirc_class, MKDEV(MAJOR(lirc_base_dev), d->minor));
out_lock:
mutex_unlock(&lirc_dev_lock);
@@ -365,7 +333,7 @@ EXPORT_SYMBOL(lirc_register_driver);
int lirc_unregister_driver(int minor)
{
- struct irctl *ir;
+ struct lirc_driver *d;
struct cdev *cdev;
if (minor < 0 || minor >= MAX_IRCTL_DEVICES) {
@@ -374,46 +342,46 @@ int lirc_unregister_driver(int minor)
return -EBADRQC;
}
- ir = irctls[minor];
- if (!ir) {
+ d = irctls[minor];
+ if (!d) {
pr_err("failed to get irctl\n");
return -ENOENT;
}
- cdev = ir->cdev;
+ cdev = d->cdev;
mutex_lock(&lirc_dev_lock);
- if (ir->d.minor != minor) {
- dev_err(ir->d.dev, "lirc_dev: minor %d device not registered\n",
- minor);
+ if (d->minor != minor) {
+ dev_err(d->dev, "lirc_dev: minor %d device not registered\n",
+ minor);
mutex_unlock(&lirc_dev_lock);
return -ENOENT;
}
/* end up polling thread */
- if (ir->task)
- kthread_stop(ir->task);
+ if (d->task)
+ kthread_stop(d->task);
- dev_dbg(ir->d.dev, "lirc_dev: driver %s unregistered from minor = %d\n",
- ir->d.name, ir->d.minor);
+ dev_dbg(d->dev, "lirc_dev: driver %s unregistered from minor = %d\n",
+ d->name, d->minor);
- ir->attached = 0;
- if (ir->open) {
- dev_dbg(ir->d.dev, LOGHEAD "releasing opened driver\n",
- ir->d.name, ir->d.minor);
- wake_up_interruptible(&ir->buf->wait_poll);
- mutex_lock(&ir->irctl_lock);
+ d->attached = 0;
+ if (d->open) {
+ dev_dbg(d->dev, LOGHEAD "releasing opened driver\n",
+ d->name, d->minor);
+ wake_up_interruptible(&d->buf->wait_poll);
+ mutex_lock(&d->irctl_lock);
- if (ir->d.set_use_dec)
- ir->d.set_use_dec(ir->d.data);
+ if (d->set_use_dec)
+ d->set_use_dec(d->data);
module_put(cdev->owner);
- mutex_unlock(&ir->irctl_lock);
+ mutex_unlock(&d->irctl_lock);
} else {
- lirc_irctl_cleanup(ir);
+ lirc_irctl_cleanup(d);
cdev_del(cdev);
- kfree(ir);
+ kfree(d);
irctls[minor] = NULL;
}
@@ -425,7 +393,7 @@ EXPORT_SYMBOL(lirc_unregister_driver);
int lirc_dev_fop_open(struct inode *inode, struct file *file)
{
- struct irctl *ir;
+ struct lirc_driver *d;
struct cdev *cdev;
int retval = 0;
@@ -437,44 +405,44 @@ int lirc_dev_fop_open(struct inode *inode, struct file *file)
if (mutex_lock_interruptible(&lirc_dev_lock))
return -ERESTARTSYS;
- ir = irctls[iminor(inode)];
- if (!ir) {
+ d = irctls[iminor(inode)];
+ if (!d) {
retval = -ENODEV;
goto error;
}
- dev_dbg(ir->d.dev, LOGHEAD "open called\n", ir->d.name, ir->d.minor);
+ dev_dbg(d->dev, LOGHEAD "open called\n", d->name, d->minor);
- if (ir->d.minor == NOPLUG) {
+ if (d->minor == NOPLUG) {
retval = -ENODEV;
goto error;
}
- if (ir->open) {
+ if (d->open) {
retval = -EBUSY;
goto error;
}
- if (ir->d.rdev) {
- retval = rc_open(ir->d.rdev);
+ if (d->rdev) {
+ retval = rc_open(d->rdev);
if (retval)
goto error;
}
- cdev = ir->cdev;
+ cdev = d->cdev;
if (try_module_get(cdev->owner)) {
- ir->open++;
- if (ir->d.set_use_inc)
- retval = ir->d.set_use_inc(ir->d.data);
+ d->open++;
+ if (d->set_use_inc)
+ retval = d->set_use_inc(d->data);
if (retval) {
module_put(cdev->owner);
- ir->open--;
+ d->open--;
} else {
- lirc_buffer_clear(ir->buf);
+ lirc_buffer_clear(d->buf);
}
- if (ir->task)
- wake_up_process(ir->task);
+ if (d->task)
+ wake_up_process(d->task);
}
error:
@@ -488,32 +456,32 @@ EXPORT_SYMBOL(lirc_dev_fop_open);
int lirc_dev_fop_close(struct inode *inode, struct file *file)
{
- struct irctl *ir = irctls[iminor(inode)];
+ struct lirc_driver *d = irctls[iminor(inode)];
struct cdev *cdev;
int ret;
- if (!ir) {
+ if (!d) {
pr_err("called with invalid irctl\n");
return -EINVAL;
}
- cdev = ir->cdev;
+ cdev = d->cdev;
ret = mutex_lock_killable(&lirc_dev_lock);
WARN_ON(ret);
- rc_close(ir->d.rdev);
+ rc_close(d->rdev);
- ir->open--;
- if (ir->attached) {
- if (ir->d.set_use_dec)
- ir->d.set_use_dec(ir->d.data);
+ d->open--;
+ if (d->attached) {
+ if (d->set_use_dec)
+ d->set_use_dec(d->data);
module_put(cdev->owner);
} else {
- lirc_irctl_cleanup(ir);
+ lirc_irctl_cleanup(d);
cdev_del(cdev);
- irctls[ir->d.minor] = NULL;
- kfree(ir);
+ irctls[d->minor] = NULL;
+ kfree(d);
}
if (!ret)
@@ -525,29 +493,30 @@ EXPORT_SYMBOL(lirc_dev_fop_close);
unsigned int lirc_dev_fop_poll(struct file *file, poll_table *wait)
{
- struct irctl *ir = irctls[iminor(file_inode(file))];
+ struct lirc_driver *d = irctls[iminor(file_inode(file))];
unsigned int ret;
- if (!ir) {
+ if (!d) {
pr_err("called with invalid irctl\n");
return POLLERR;
}
- if (!ir->attached)
+ if (!d->attached)
return POLLERR;
- if (ir->buf) {
- poll_wait(file, &ir->buf->wait_poll, wait);
+ if (d->buf) {
+ poll_wait(file, &d->buf->wait_poll, wait);
- if (lirc_buffer_empty(ir->buf))
+ if (lirc_buffer_empty(d->buf))
ret = 0;
else
ret = POLLIN | POLLRDNORM;
- } else
+ } else {
ret = POLLERR;
+ }
- dev_dbg(ir->d.dev, LOGHEAD "poll result = %d\n",
- ir->d.name, ir->d.minor, ret);
+ dev_dbg(d->dev, LOGHEAD "poll result = %d\n",
+ d->name, d->minor, ret);
return ret;
}
@@ -557,46 +526,46 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
{
__u32 mode;
int result = 0;
- struct irctl *ir = irctls[iminor(file_inode(file))];
+ struct lirc_driver *d = irctls[iminor(file_inode(file))];
- if (!ir) {
+ if (!d) {
pr_err("no irctl found!\n");
return -ENODEV;
}
- dev_dbg(ir->d.dev, LOGHEAD "ioctl called (0x%x)\n",
- ir->d.name, ir->d.minor, cmd);
+ dev_dbg(d->dev, LOGHEAD "ioctl called (0x%x)\n",
+ d->name, d->minor, cmd);
- if (ir->d.minor == NOPLUG || !ir->attached) {
- dev_err(ir->d.dev, LOGHEAD "ioctl result = -ENODEV\n",
- ir->d.name, ir->d.minor);
+ if (d->minor == NOPLUG || !d->attached) {
+ dev_err(d->dev, LOGHEAD "ioctl result = -ENODEV\n",
+ d->name, d->minor);
return -ENODEV;
}
- mutex_lock(&ir->irctl_lock);
+ mutex_lock(&d->irctl_lock);
switch (cmd) {
case LIRC_GET_FEATURES:
- result = put_user(ir->d.features, (__u32 __user *)arg);
+ result = put_user(d->features, (__u32 __user *)arg);
break;
case LIRC_GET_REC_MODE:
- if (!LIRC_CAN_REC(ir->d.features)) {
+ if (!LIRC_CAN_REC(d->features)) {
result = -ENOTTY;
break;
}
result = put_user(LIRC_REC2MODE
- (ir->d.features & LIRC_CAN_REC_MASK),
+ (d->features & LIRC_CAN_REC_MASK),
(__u32 __user *)arg);
break;
case LIRC_SET_REC_MODE:
- if (!LIRC_CAN_REC(ir->d.features)) {
+ if (!LIRC_CAN_REC(d->features)) {
result = -ENOTTY;
break;
}
result = get_user(mode, (__u32 __user *)arg);
- if (!result && !(LIRC_MODE2REC(mode) & ir->d.features))
+ if (!result && !(LIRC_MODE2REC(mode) & d->features))
result = -EINVAL;
/*
* FIXME: We should actually set the mode somehow but
@@ -604,31 +573,31 @@ long lirc_dev_fop_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
*/
break;
case LIRC_GET_LENGTH:
- result = put_user(ir->d.code_length, (__u32 __user *)arg);
+ result = put_user(d->code_length, (__u32 __user *)arg);
break;
case LIRC_GET_MIN_TIMEOUT:
- if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) ||
- ir->d.min_timeout == 0) {
+ if (!(d->features & LIRC_CAN_SET_REC_TIMEOUT) ||
+ d->min_timeout == 0) {
result = -ENOTTY;
break;
}
- result = put_user(ir->d.min_timeout, (__u32 __user *)arg);
+ result = put_user(d->min_timeout, (__u32 __user *)arg);
break;
case LIRC_GET_MAX_TIMEOUT:
- if (!(ir->d.features & LIRC_CAN_SET_REC_TIMEOUT) ||
- ir->d.max_timeout == 0) {
+ if (!(d->features & LIRC_CAN_SET_REC_TIMEOUT) ||
+ d->max_timeout == 0) {
result = -ENOTTY;
break;
}
- result = put_user(ir->d.max_timeout, (__u32 __user *)arg);
+ result = put_user(d->max_timeout, (__u32 __user *)arg);
break;
default:
result = -EINVAL;
}
- mutex_unlock(&ir->irctl_lock);
+ mutex_unlock(&d->irctl_lock);
return result;
}
@@ -639,32 +608,32 @@ ssize_t lirc_dev_fop_read(struct file *file,
size_t length,
loff_t *ppos)
{
- struct irctl *ir = irctls[iminor(file_inode(file))];
+ struct lirc_driver *d = irctls[iminor(file_inode(file))];
unsigned char *buf;
int ret = 0, written = 0;
DECLARE_WAITQUEUE(wait, current);
- if (!ir) {
+ if (!d) {
pr_err("called with invalid irctl\n");
return -ENODEV;
}
- dev_dbg(ir->d.dev, LOGHEAD "read called\n", ir->d.name, ir->d.minor);
+ dev_dbg(d->dev, LOGHEAD "read called\n", d->name, d->minor);
- buf = kzalloc(ir->chunk_size, GFP_KERNEL);
+ buf = kzalloc(d->chunk_size, GFP_KERNEL);
if (!buf)
return -ENOMEM;
- if (mutex_lock_interruptible(&ir->irctl_lock)) {
+ if (mutex_lock_interruptible(&d->irctl_lock)) {
ret = -ERESTARTSYS;
goto out_unlocked;
}
- if (!ir->attached) {
+ if (!d->attached) {
ret = -ENODEV;
goto out_locked;
}
- if (length % ir->chunk_size) {
+ if (length % d->chunk_size) {
ret = -EINVAL;
goto out_locked;
}
@@ -674,14 +643,14 @@ ssize_t lirc_dev_fop_read(struct file *file,
* to avoid losing scan code (in case when queue is awaken somewhere
* between while condition checking and scheduling)
*/
- add_wait_queue(&ir->buf->wait_poll, &wait);
+ add_wait_queue(&d->buf->wait_poll, &wait);
/*
* while we didn't provide 'length' bytes, device is opened in blocking
* mode and 'copy_to_user' is happy, wait for data.
*/
while (written < length && ret == 0) {
- if (lirc_buffer_empty(ir->buf)) {
+ if (lirc_buffer_empty(d->buf)) {
/* According to the read(2) man page, 'written' can be
* returned as less than 'length', instead of blocking
* again, returning -EWOULDBLOCK, or returning
@@ -698,36 +667,36 @@ ssize_t lirc_dev_fop_read(struct file *file,
break;
}
- mutex_unlock(&ir->irctl_lock);
+ mutex_unlock(&d->irctl_lock);
set_current_state(TASK_INTERRUPTIBLE);
schedule();
set_current_state(TASK_RUNNING);
- if (mutex_lock_interruptible(&ir->irctl_lock)) {
+ if (mutex_lock_interruptible(&d->irctl_lock)) {
ret = -ERESTARTSYS;
- remove_wait_queue(&ir->buf->wait_poll, &wait);
+ remove_wait_queue(&d->buf->wait_poll, &wait);
goto out_unlocked;
}
- if (!ir->attached) {
+ if (!d->attached) {
ret = -ENODEV;
goto out_locked;
}
} else {
- lirc_buffer_read(ir->buf, buf);
+ lirc_buffer_read(d->buf, buf);
ret = copy_to_user((void __user *)buffer+written, buf,
- ir->buf->chunk_size);
+ d->buf->chunk_size);
if (!ret)
- written += ir->buf->chunk_size;
+ written += d->buf->chunk_size;
else
ret = -EFAULT;
}
}
- remove_wait_queue(&ir->buf->wait_poll, &wait);
+ remove_wait_queue(&d->buf->wait_poll, &wait);
out_locked:
- mutex_unlock(&ir->irctl_lock);
+ mutex_unlock(&d->irctl_lock);
out_unlocked:
kfree(buf);
@@ -738,7 +707,7 @@ EXPORT_SYMBOL(lirc_dev_fop_read);
void *lirc_get_pdata(struct file *file)
{
- return irctls[iminor(file_inode(file))]->d.data;
+ return irctls[iminor(file_inode(file))]->data;
}
EXPORT_SYMBOL(lirc_get_pdata);
@@ -746,14 +715,14 @@ EXPORT_SYMBOL(lirc_get_pdata);
ssize_t lirc_dev_fop_write(struct file *file, const char __user *buffer,
size_t length, loff_t *ppos)
{
- struct irctl *ir = irctls[iminor(file_inode(file))];
+ struct lirc_driver *d = irctls[iminor(file_inode(file))];
- if (!ir) {
+ if (!d) {
pr_err("called with invalid irctl\n");
return -ENODEV;
}
- if (!ir->attached)
+ if (!d->attached)
return -ENODEV;
return -EINVAL;
diff --git a/drivers/staging/media/lirc/lirc_sasem.c b/drivers/staging/media/lirc/lirc_sasem.c
index b0c176e..dd9c877 100644
--- a/drivers/staging/media/lirc/lirc_sasem.c
+++ b/drivers/staging/media/lirc/lirc_sasem.c
@@ -167,7 +167,6 @@ static void delete_context(struct sasem_context *context)
usb_free_urb(context->rx_urb); /* IR */
lirc_buffer_free(context->driver->rbuf);
kfree(context->driver->rbuf);
- kfree(context->driver);
kfree(context);
}
diff --git a/include/media/lirc_dev.h b/include/media/lirc_dev.h
index cec7d35..aa4ec34 100644
--- a/include/media/lirc_dev.h
+++ b/include/media/lirc_dev.h
@@ -182,6 +182,20 @@ static inline unsigned int lirc_buffer_write(struct lirc_buffer *buf,
* device.
*
* @owner: the module owning this struct
+ *
+ * @attached: 1 if the device is still attached, 0 otherwise
+ *
+ * @open: 1 if the lirc char device has been opened
+ *
+ * @irctl_lock: mutex for the structure
+ *
+ * @buf: read buffer used if rbuf is not set
+ *
+ * @cdev: the char device structure
+ *
+ * @task: thread performing read polling, if present
+ *
+ * @jiffies_to_wait: jiffies to sleep in read polling thread
*/
struct lirc_driver {
char name[40];
@@ -204,6 +218,17 @@ struct lirc_driver {
const struct file_operations *fops;
struct device *dev;
struct module *owner;
+
+ int attached;
+ int open;
+
+ struct mutex irctl_lock;
+ struct lirc_buffer *buf;
+
+ struct cdev *cdev;
+
+ struct task_struct *task;
+ long jiffies_to_wait;
};
/* following functions can be called ONLY from user context
--
2.9.3
--
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