media: cec: move the core to a separate directory

In preparation for moving CEC drivers to the CEC directory,
move the core to a separate place.

Acked-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>

1 files changed, 0 insertions, 701 deletions

diff --git a/drivers/media/cec/cec-api.c b/drivers/media/cec/cec-api.c
deleted file mode 100644
index 17d1cb2e5f97..000000000000
--- a/drivers/media/cec/cec-api.c
+++ /dev/null
@@ -1,701 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/*
- * cec-api.c - HDMI Consumer Electronics Control framework - API
- *
- * Copyright 2016 Cisco Systems, Inc. and/or its affiliates. All rights reserved.
- */
-
-#include <linux/errno.h>
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/kmod.h>
-#include <linux/ktime.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <linux/string.h>
-#include <linux/types.h>
-#include <linux/uaccess.h>
-#include <linux/version.h>
-
-#include <media/cec-pin.h>
-#include "cec-priv.h"
-#include "cec-pin-priv.h"
-
-static inline struct cec_devnode *cec_devnode_data(struct file *filp)
-{
-	struct cec_fh *fh = filp->private_data;
-
-	return &fh->adap->devnode;
-}
-
-/* CEC file operations */
-
-static __poll_t cec_poll(struct file *filp,
-			     struct poll_table_struct *poll)
-{
-	struct cec_fh *fh = filp->private_data;
-	struct cec_adapter *adap = fh->adap;
-	__poll_t res = 0;
-
-	poll_wait(filp, &fh->wait, poll);
-	if (!cec_is_registered(adap))
-		return EPOLLERR | EPOLLHUP;
-	mutex_lock(&adap->lock);
-	if (adap->is_configured &&
-	    adap->transmit_queue_sz < CEC_MAX_MSG_TX_QUEUE_SZ)
-		res |= EPOLLOUT | EPOLLWRNORM;
-	if (fh->queued_msgs)
-		res |= EPOLLIN | EPOLLRDNORM;
-	if (fh->total_queued_events)
-		res |= EPOLLPRI;
-	mutex_unlock(&adap->lock);
-	return res;
-}
-
-static bool cec_is_busy(const struct cec_adapter *adap,
-			const struct cec_fh *fh)
-{
-	bool valid_initiator = adap->cec_initiator && adap->cec_initiator == fh;
-	bool valid_follower = adap->cec_follower && adap->cec_follower == fh;
-
-	/*
-	 * Exclusive initiators and followers can always access the CEC adapter
-	 */
-	if (valid_initiator || valid_follower)
-		return false;
-	/*
-	 * All others can only access the CEC adapter if there is no
-	 * exclusive initiator and they are in INITIATOR mode.
-	 */
-	return adap->cec_initiator ||
-	       fh->mode_initiator == CEC_MODE_NO_INITIATOR;
-}
-
-static long cec_adap_g_caps(struct cec_adapter *adap,
-			    struct cec_caps __user *parg)
-{
-	struct cec_caps caps = {};
-
-	strscpy(caps.driver, adap->devnode.dev.parent->driver->name,
-		sizeof(caps.driver));
-	strscpy(caps.name, adap->name, sizeof(caps.name));
-	caps.available_log_addrs = adap->available_log_addrs;
-	caps.capabilities = adap->capabilities;
-	caps.version = LINUX_VERSION_CODE;
-	if (copy_to_user(parg, &caps, sizeof(caps)))
-		return -EFAULT;
-	return 0;
-}
-
-static long cec_adap_g_phys_addr(struct cec_adapter *adap,
-				 __u16 __user *parg)
-{
-	u16 phys_addr;
-
-	mutex_lock(&adap->lock);
-	phys_addr = adap->phys_addr;
-	mutex_unlock(&adap->lock);
-	if (copy_to_user(parg, &phys_addr, sizeof(phys_addr)))
-		return -EFAULT;
-	return 0;
-}
-
-static int cec_validate_phys_addr(u16 phys_addr)
-{
-	int i;
-
-	if (phys_addr == CEC_PHYS_ADDR_INVALID)
-		return 0;
-	for (i = 0; i < 16; i += 4)
-		if (phys_addr & (0xf << i))
-			break;
-	if (i == 16)
-		return 0;
-	for (i += 4; i < 16; i += 4)
-		if ((phys_addr & (0xf << i)) == 0)
-			return -EINVAL;
-	return 0;
-}
-
-static long cec_adap_s_phys_addr(struct cec_adapter *adap, struct cec_fh *fh,
-				 bool block, __u16 __user *parg)
-{
-	u16 phys_addr;
-	long err;
-
-	if (!(adap->capabilities & CEC_CAP_PHYS_ADDR))
-		return -ENOTTY;
-	if (copy_from_user(&phys_addr, parg, sizeof(phys_addr)))
-		return -EFAULT;
-
-	err = cec_validate_phys_addr(phys_addr);
-	if (err)
-		return err;
-	mutex_lock(&adap->lock);
-	if (cec_is_busy(adap, fh))
-		err = -EBUSY;
-	else
-		__cec_s_phys_addr(adap, phys_addr, block);
-	mutex_unlock(&adap->lock);
-	return err;
-}
-
-static long cec_adap_g_log_addrs(struct cec_adapter *adap,
-				 struct cec_log_addrs __user *parg)
-{
-	struct cec_log_addrs log_addrs;
-
-	mutex_lock(&adap->lock);
-	log_addrs = adap->log_addrs;
-	if (!adap->is_configured)
-		memset(log_addrs.log_addr, CEC_LOG_ADDR_INVALID,
-		       sizeof(log_addrs.log_addr));
-	mutex_unlock(&adap->lock);
-
-	if (copy_to_user(parg, &log_addrs, sizeof(log_addrs)))
-		return -EFAULT;
-	return 0;
-}
-
-static long cec_adap_s_log_addrs(struct cec_adapter *adap, struct cec_fh *fh,
-				 bool block, struct cec_log_addrs __user *parg)
-{
-	struct cec_log_addrs log_addrs;
-	long err = -EBUSY;
-
-	if (!(adap->capabilities & CEC_CAP_LOG_ADDRS))
-		return -ENOTTY;
-	if (copy_from_user(&log_addrs, parg, sizeof(log_addrs)))
-		return -EFAULT;
-	log_addrs.flags &= CEC_LOG_ADDRS_FL_ALLOW_UNREG_FALLBACK |
-			   CEC_LOG_ADDRS_FL_ALLOW_RC_PASSTHRU |
-			   CEC_LOG_ADDRS_FL_CDC_ONLY;
-	mutex_lock(&adap->lock);
-	if (!adap->is_configuring &&
-	    (!log_addrs.num_log_addrs || !adap->is_configured) &&
-	    !cec_is_busy(adap, fh)) {
-		err = __cec_s_log_addrs(adap, &log_addrs, block);
-		if (!err)
-			log_addrs = adap->log_addrs;
-	}
-	mutex_unlock(&adap->lock);
-	if (err)
-		return err;
-	if (copy_to_user(parg, &log_addrs, sizeof(log_addrs)))
-		return -EFAULT;
-	return 0;
-}
-
-static long cec_adap_g_connector_info(struct cec_adapter *adap,
-				      struct cec_log_addrs __user *parg)
-{
-	int ret = 0;
-
-	if (!(adap->capabilities & CEC_CAP_CONNECTOR_INFO))
-		return -ENOTTY;
-
-	mutex_lock(&adap->lock);
-	if (copy_to_user(parg, &adap->conn_info, sizeof(adap->conn_info)))
-		ret = -EFAULT;
-	mutex_unlock(&adap->lock);
-	return ret;
-}
-
-static long cec_transmit(struct cec_adapter *adap, struct cec_fh *fh,
-			 bool block, struct cec_msg __user *parg)
-{
-	struct cec_msg msg = {};
-	long err = 0;
-
-	if (!(adap->capabilities & CEC_CAP_TRANSMIT))
-		return -ENOTTY;
-	if (copy_from_user(&msg, parg, sizeof(msg)))
-		return -EFAULT;
-
-	mutex_lock(&adap->lock);
-	if (adap->log_addrs.num_log_addrs == 0)
-		err = -EPERM;
-	else if (adap->is_configuring)
-		err = -ENONET;
-	else if (cec_is_busy(adap, fh))
-		err = -EBUSY;
-	else
-		err = cec_transmit_msg_fh(adap, &msg, fh, block);
-	mutex_unlock(&adap->lock);
-	if (err)
-		return err;
-	if (copy_to_user(parg, &msg, sizeof(msg)))
-		return -EFAULT;
-	return 0;
-}
-
-/* Called by CEC_RECEIVE: wait for a message to arrive */
-static int cec_receive_msg(struct cec_fh *fh, struct cec_msg *msg, bool block)
-{
-	u32 timeout = msg->timeout;
-	int res;
-
-	do {
-		mutex_lock(&fh->lock);
-		/* Are there received messages queued up? */
-		if (fh->queued_msgs) {
-			/* Yes, return the first one */
-			struct cec_msg_entry *entry =
-				list_first_entry(&fh->msgs,
-						 struct cec_msg_entry, list);
-
-			list_del(&entry->list);
-			*msg = entry->msg;
-			kfree(entry);
-			fh->queued_msgs--;
-			mutex_unlock(&fh->lock);
-			/* restore original timeout value */
-			msg->timeout = timeout;
-			return 0;
-		}
-
-		/* No, return EAGAIN in non-blocking mode or wait */
-		mutex_unlock(&fh->lock);
-
-		/* Return when in non-blocking mode */
-		if (!block)
-			return -EAGAIN;
-
-		if (msg->timeout) {
-			/* The user specified a timeout */
-			res = wait_event_interruptible_timeout(fh->wait,
-							       fh->queued_msgs,
-				msecs_to_jiffies(msg->timeout));
-			if (res == 0)
-				res = -ETIMEDOUT;
-			else if (res > 0)
-				res = 0;
-		} else {
-			/* Wait indefinitely */
-			res = wait_event_interruptible(fh->wait,
-						       fh->queued_msgs);
-		}
-		/* Exit on error, otherwise loop to get the new message */
-	} while (!res);
-	return res;
-}
-
-static long cec_receive(struct cec_adapter *adap, struct cec_fh *fh,
-			bool block, struct cec_msg __user *parg)
-{
-	struct cec_msg msg = {};
-	long err;
-
-	if (copy_from_user(&msg, parg, sizeof(msg)))
-		return -EFAULT;
-
-	err = cec_receive_msg(fh, &msg, block);
-	if (err)
-		return err;
-	msg.flags = 0;
-	if (copy_to_user(parg, &msg, sizeof(msg)))
-		return -EFAULT;
-	return 0;
-}
-
-static long cec_dqevent(struct cec_adapter *adap, struct cec_fh *fh,
-			bool block, struct cec_event __user *parg)
-{
-	struct cec_event_entry *ev = NULL;
-	u64 ts = ~0ULL;
-	unsigned int i;
-	unsigned int ev_idx;
-	long err = 0;
-
-	mutex_lock(&fh->lock);
-	while (!fh->total_queued_events && block) {
-		mutex_unlock(&fh->lock);
-		err = wait_event_interruptible(fh->wait,
-					       fh->total_queued_events);
-		if (err)
-			return err;
-		mutex_lock(&fh->lock);
-	}
-
-	/* Find the oldest event */
-	for (i = 0; i < CEC_NUM_EVENTS; i++) {
-		struct cec_event_entry *entry =
-			list_first_entry_or_null(&fh->events[i],
-						 struct cec_event_entry, list);
-
-		if (entry && entry->ev.ts <= ts) {
-			ev = entry;
-			ev_idx = i;
-			ts = ev->ev.ts;
-		}
-	}
-
-	if (!ev) {
-		err = -EAGAIN;
-		goto unlock;
-	}
-	list_del(&ev->list);
-
-	if (copy_to_user(parg, &ev->ev, sizeof(ev->ev)))
-		err = -EFAULT;
-	if (ev_idx >= CEC_NUM_CORE_EVENTS)
-		kfree(ev);
-	fh->queued_events[ev_idx]--;
-	fh->total_queued_events--;
-
-unlock:
-	mutex_unlock(&fh->lock);
-	return err;
-}
-
-static long cec_g_mode(struct cec_adapter *adap, struct cec_fh *fh,
-		       u32 __user *parg)
-{
-	u32 mode = fh->mode_initiator | fh->mode_follower;
-
-	if (copy_to_user(parg, &mode, sizeof(mode)))
-		return -EFAULT;
-	return 0;
-}
-
-static long cec_s_mode(struct cec_adapter *adap, struct cec_fh *fh,
-		       u32 __user *parg)
-{
-	u32 mode;
-	u8 mode_initiator;
-	u8 mode_follower;
-	bool send_pin_event = false;
-	long err = 0;
-
-	if (copy_from_user(&mode, parg, sizeof(mode)))
-		return -EFAULT;
-	if (mode & ~(CEC_MODE_INITIATOR_MSK | CEC_MODE_FOLLOWER_MSK)) {
-		dprintk(1, "%s: invalid mode bits set\n", __func__);
-		return -EINVAL;
-	}
-
-	mode_initiator = mode & CEC_MODE_INITIATOR_MSK;
-	mode_follower = mode & CEC_MODE_FOLLOWER_MSK;
-
-	if (mode_initiator > CEC_MODE_EXCL_INITIATOR ||
-	    mode_follower > CEC_MODE_MONITOR_ALL) {
-		dprintk(1, "%s: unknown mode\n", __func__);
-		return -EINVAL;
-	}
-
-	if (mode_follower == CEC_MODE_MONITOR_ALL &&
-	    !(adap->capabilities & CEC_CAP_MONITOR_ALL)) {
-		dprintk(1, "%s: MONITOR_ALL not supported\n", __func__);
-		return -EINVAL;
-	}
-
-	if (mode_follower == CEC_MODE_MONITOR_PIN &&
-	    !(adap->capabilities & CEC_CAP_MONITOR_PIN)) {
-		dprintk(1, "%s: MONITOR_PIN not supported\n", __func__);
-		return -EINVAL;
-	}
-
-	/* Follower modes should always be able to send CEC messages */
-	if ((mode_initiator == CEC_MODE_NO_INITIATOR ||
-	     !(adap->capabilities & CEC_CAP_TRANSMIT)) &&
-	    mode_follower >= CEC_MODE_FOLLOWER &&
-	    mode_follower <= CEC_MODE_EXCL_FOLLOWER_PASSTHRU) {
-		dprintk(1, "%s: cannot transmit\n", __func__);
-		return -EINVAL;
-	}
-
-	/* Monitor modes require CEC_MODE_NO_INITIATOR */
-	if (mode_initiator && mode_follower >= CEC_MODE_MONITOR_PIN) {
-		dprintk(1, "%s: monitor modes require NO_INITIATOR\n",
-			__func__);
-		return -EINVAL;
-	}
-
-	/* Monitor modes require CAP_NET_ADMIN */
-	if (mode_follower >= CEC_MODE_MONITOR_PIN && !capable(CAP_NET_ADMIN))
-		return -EPERM;
-
-	mutex_lock(&adap->lock);
-	/*
-	 * You can't become exclusive follower if someone else already
-	 * has that job.
-	 */
-	if ((mode_follower == CEC_MODE_EXCL_FOLLOWER ||
-	     mode_follower == CEC_MODE_EXCL_FOLLOWER_PASSTHRU) &&
-	    adap->cec_follower && adap->cec_follower != fh)
-		err = -EBUSY;
-	/*
-	 * You can't become exclusive initiator if someone else already
-	 * has that job.
-	 */
-	if (mode_initiator == CEC_MODE_EXCL_INITIATOR &&
-	    adap->cec_initiator && adap->cec_initiator != fh)
-		err = -EBUSY;
-
-	if (!err) {
-		bool old_mon_all = fh->mode_follower == CEC_MODE_MONITOR_ALL;
-		bool new_mon_all = mode_follower == CEC_MODE_MONITOR_ALL;
-
-		if (old_mon_all != new_mon_all) {
-			if (new_mon_all)
-				err = cec_monitor_all_cnt_inc(adap);
-			else
-				cec_monitor_all_cnt_dec(adap);
-		}
-	}
-
-	if (!err) {
-		bool old_mon_pin = fh->mode_follower == CEC_MODE_MONITOR_PIN;
-		bool new_mon_pin = mode_follower == CEC_MODE_MONITOR_PIN;
-
-		if (old_mon_pin != new_mon_pin) {
-			send_pin_event = new_mon_pin;
-			if (new_mon_pin)
-				err = cec_monitor_pin_cnt_inc(adap);
-			else
-				cec_monitor_pin_cnt_dec(adap);
-		}
-	}
-
-	if (err) {
-		mutex_unlock(&adap->lock);
-		return err;
-	}
-
-	if (fh->mode_follower == CEC_MODE_FOLLOWER)
-		adap->follower_cnt--;
-	if (mode_follower == CEC_MODE_FOLLOWER)
-		adap->follower_cnt++;
-	if (send_pin_event) {
-		struct cec_event ev = {
-			.flags = CEC_EVENT_FL_INITIAL_STATE,
-		};
-
-		ev.event = adap->cec_pin_is_high ? CEC_EVENT_PIN_CEC_HIGH :
-						   CEC_EVENT_PIN_CEC_LOW;
-		cec_queue_event_fh(fh, &ev, 0);
-	}
-	if (mode_follower == CEC_MODE_EXCL_FOLLOWER ||
-	    mode_follower == CEC_MODE_EXCL_FOLLOWER_PASSTHRU) {
-		adap->passthrough =
-			mode_follower == CEC_MODE_EXCL_FOLLOWER_PASSTHRU;
-		adap->cec_follower = fh;
-	} else if (adap->cec_follower == fh) {
-		adap->passthrough = false;
-		adap->cec_follower = NULL;
-	}
-	if (mode_initiator == CEC_MODE_EXCL_INITIATOR)
-		adap->cec_initiator = fh;
-	else if (adap->cec_initiator == fh)
-		adap->cec_initiator = NULL;
-	fh->mode_initiator = mode_initiator;
-	fh->mode_follower = mode_follower;
-	mutex_unlock(&adap->lock);
-	return 0;
-}
-
-static long cec_ioctl(struct file *filp, unsigned int cmd, unsigned long arg)
-{
-	struct cec_fh *fh = filp->private_data;
-	struct cec_adapter *adap = fh->adap;
-	bool block = !(filp->f_flags & O_NONBLOCK);
-	void __user *parg = (void __user *)arg;
-
-	if (!cec_is_registered(adap))
-		return -ENODEV;
-
-	switch (cmd) {
-	case CEC_ADAP_G_CAPS:
-		return cec_adap_g_caps(adap, parg);
-
-	case CEC_ADAP_G_PHYS_ADDR:
-		return cec_adap_g_phys_addr(adap, parg);
-
-	case CEC_ADAP_S_PHYS_ADDR:
-		return cec_adap_s_phys_addr(adap, fh, block, parg);
-
-	case CEC_ADAP_G_LOG_ADDRS:
-		return cec_adap_g_log_addrs(adap, parg);
-
-	case CEC_ADAP_S_LOG_ADDRS:
-		return cec_adap_s_log_addrs(adap, fh, block, parg);
-
-	case CEC_ADAP_G_CONNECTOR_INFO:
-		return cec_adap_g_connector_info(adap, parg);
-
-	case CEC_TRANSMIT:
-		return cec_transmit(adap, fh, block, parg);
-
-	case CEC_RECEIVE:
-		return cec_receive(adap, fh, block, parg);
-
-	case CEC_DQEVENT:
-		return cec_dqevent(adap, fh, block, parg);
-
-	case CEC_G_MODE:
-		return cec_g_mode(adap, fh, parg);
-
-	case CEC_S_MODE:
-		return cec_s_mode(adap, fh, parg);
-
-	default:
-		return -ENOTTY;
-	}
-}
-
-static int cec_open(struct inode *inode, struct file *filp)
-{
-	struct cec_devnode *devnode =
-		container_of(inode->i_cdev, struct cec_devnode, cdev);
-	struct cec_adapter *adap = to_cec_adapter(devnode);
-	struct cec_fh *fh = kzalloc(sizeof(*fh), GFP_KERNEL);
-	/*
-	 * Initial events that are automatically sent when the cec device is
-	 * opened.
-	 */
-	struct cec_event ev = {
-		.event = CEC_EVENT_STATE_CHANGE,
-		.flags = CEC_EVENT_FL_INITIAL_STATE,
-	};
-	unsigned int i;
-	int err;
-
-	if (!fh)
-		return -ENOMEM;
-
-	INIT_LIST_HEAD(&fh->msgs);
-	INIT_LIST_HEAD(&fh->xfer_list);
-	for (i = 0; i < CEC_NUM_EVENTS; i++)
-		INIT_LIST_HEAD(&fh->events[i]);
-	mutex_init(&fh->lock);
-	init_waitqueue_head(&fh->wait);
-
-	fh->mode_initiator = CEC_MODE_INITIATOR;
-	fh->adap = adap;
-
-	err = cec_get_device(devnode);
-	if (err) {
-		kfree(fh);
-		return err;
-	}
-
-	mutex_lock(&devnode->lock);
-	if (list_empty(&devnode->fhs) &&
-	    !adap->needs_hpd &&
-	    adap->phys_addr == CEC_PHYS_ADDR_INVALID) {
-		err = adap->ops->adap_enable(adap, true);
-		if (err) {
-			mutex_unlock(&devnode->lock);
-			kfree(fh);
-			return err;
-		}
-	}
-	filp->private_data = fh;
-
-	/* Queue up initial state events */
-	ev.state_change.phys_addr = adap->phys_addr;
-	ev.state_change.log_addr_mask = adap->log_addrs.log_addr_mask;
-	ev.state_change.have_conn_info =
-		adap->conn_info.type != CEC_CONNECTOR_TYPE_NO_CONNECTOR;
-	cec_queue_event_fh(fh, &ev, 0);
-#ifdef CONFIG_CEC_PIN
-	if (adap->pin && adap->pin->ops->read_hpd) {
-		err = adap->pin->ops->read_hpd(adap);
-		if (err >= 0) {
-			ev.event = err ? CEC_EVENT_PIN_HPD_HIGH :
-					 CEC_EVENT_PIN_HPD_LOW;
-			cec_queue_event_fh(fh, &ev, 0);
-		}
-	}
-	if (adap->pin && adap->pin->ops->read_5v) {
-		err = adap->pin->ops->read_5v(adap);
-		if (err >= 0) {
-			ev.event = err ? CEC_EVENT_PIN_5V_HIGH :
-					 CEC_EVENT_PIN_5V_LOW;
-			cec_queue_event_fh(fh, &ev, 0);
-		}
-	}
-#endif
-
-	list_add(&fh->list, &devnode->fhs);
-	mutex_unlock(&devnode->lock);
-
-	return 0;
-}
-
-/* Override for the release function */
-static int cec_release(struct inode *inode, struct file *filp)
-{
-	struct cec_devnode *devnode = cec_devnode_data(filp);
-	struct cec_adapter *adap = to_cec_adapter(devnode);
-	struct cec_fh *fh = filp->private_data;
-	unsigned int i;
-
-	mutex_lock(&adap->lock);
-	if (adap->cec_initiator == fh)
-		adap->cec_initiator = NULL;
-	if (adap->cec_follower == fh) {
-		adap->cec_follower = NULL;
-		adap->passthrough = false;
-	}
-	if (fh->mode_follower == CEC_MODE_FOLLOWER)
-		adap->follower_cnt--;
-	if (fh->mode_follower == CEC_MODE_MONITOR_PIN)
-		cec_monitor_pin_cnt_dec(adap);
-	if (fh->mode_follower == CEC_MODE_MONITOR_ALL)
-		cec_monitor_all_cnt_dec(adap);
-	mutex_unlock(&adap->lock);
-
-	mutex_lock(&devnode->lock);
-	list_del(&fh->list);
-	if (cec_is_registered(adap) && list_empty(&devnode->fhs) &&
-	    !adap->needs_hpd && adap->phys_addr == CEC_PHYS_ADDR_INVALID) {
-		WARN_ON(adap->ops->adap_enable(adap, false));
-	}
-	mutex_unlock(&devnode->lock);
-
-	/* Unhook pending transmits from this filehandle. */
-	mutex_lock(&adap->lock);
-	while (!list_empty(&fh->xfer_list)) {
-		struct cec_data *data =
-			list_first_entry(&fh->xfer_list, struct cec_data, xfer_list);
-
-		data->blocking = false;
-		data->fh = NULL;
-		list_del(&data->xfer_list);
-	}
-	mutex_unlock(&adap->lock);
-	while (!list_empty(&fh->msgs)) {
-		struct cec_msg_entry *entry =
-			list_first_entry(&fh->msgs, struct cec_msg_entry, list);
-
-		list_del(&entry->list);
-		kfree(entry);
-	}
-	for (i = CEC_NUM_CORE_EVENTS; i < CEC_NUM_EVENTS; i++) {
-		while (!list_empty(&fh->events[i])) {
-			struct cec_event_entry *entry =
-				list_first_entry(&fh->events[i],
-						 struct cec_event_entry, list);
-
-			list_del(&entry->list);
-			kfree(entry);
-		}
-	}
-	kfree(fh);
-
-	cec_put_device(devnode);
-	filp->private_data = NULL;
-	return 0;
-}
-
-const struct file_operations cec_devnode_fops = {
-	.owner = THIS_MODULE,
-	.open = cec_open,
-	.unlocked_ioctl = cec_ioctl,
-	.compat_ioctl = cec_ioctl,
-	.release = cec_release,
-	.poll = cec_poll,
-	.llseek = no_llseek,
-};