mei: move amthif specific release code to amithif
Move amthif code part into separate function mei_amthif_release. Also helper functions mei_clear_list and mei_clear_lists are moved along Signed-off-by: Tomas Winkler <tomas.winkler@intel.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler
Greg Kroah-Hartman
parent
4b8960b492
commit
a562d5c25a
@ -596,4 +596,118 @@ void mei_amthif_complete(struct mei_device *dev, struct mei_cl_cb *cb)
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wake_up_interruptible(&dev->iamthif_cl.wait);
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}
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/**
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* mei_clear_list - removes all callbacks associated with file
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* from mei_cb_list
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*
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* @dev: device structure.
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* @file: file structure
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* @mei_cb_list: callbacks list
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*
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* mei_clear_list is called to clear resources associated with file
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* when application calls close function or Ctrl-C was pressed
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*
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* returns true if callback removed from the list, false otherwise
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*/
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static bool mei_clear_list(struct mei_device *dev,
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const struct file *file, struct list_head *mei_cb_list)
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{
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struct mei_cl_cb *cb_pos = NULL;
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struct mei_cl_cb *cb_next = NULL;
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bool removed = false;
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/* list all list member */
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list_for_each_entry_safe(cb_pos, cb_next, mei_cb_list, list) {
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/* check if list member associated with a file */
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if (file == cb_pos->file_object) {
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/* remove member from the list */
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list_del(&cb_pos->list);
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/* check if cb equal to current iamthif cb */
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if (dev->iamthif_current_cb == cb_pos) {
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dev->iamthif_current_cb = NULL;
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/* send flow control to iamthif client */
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mei_send_flow_control(dev, &dev->iamthif_cl);
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}
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/* free all allocated buffers */
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mei_io_cb_free(cb_pos);
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cb_pos = NULL;
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removed = true;
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}
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}
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return removed;
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}
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/**
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* mei_clear_lists - removes all callbacks associated with file
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*
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* @dev: device structure
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* @file: file structure
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*
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* mei_clear_lists is called to clear resources associated with file
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* when application calls close function or Ctrl-C was pressed
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*
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* returns true if callback removed from the list, false otherwise
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*/
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static bool mei_clear_lists(struct mei_device *dev, struct file *file)
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{
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bool removed = false;
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/* remove callbacks associated with a file */
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mei_clear_list(dev, file, &dev->amthif_cmd_list.list);
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if (mei_clear_list(dev, file, &dev->amthif_rd_complete_list.list))
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removed = true;
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mei_clear_list(dev, file, &dev->ctrl_rd_list.list);
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if (mei_clear_list(dev, file, &dev->ctrl_wr_list.list))
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removed = true;
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if (mei_clear_list(dev, file, &dev->write_waiting_list.list))
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removed = true;
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if (mei_clear_list(dev, file, &dev->write_list.list))
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removed = true;
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/* check if iamthif_current_cb not NULL */
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if (dev->iamthif_current_cb && !removed) {
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/* check file and iamthif current cb association */
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if (dev->iamthif_current_cb->file_object == file) {
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/* remove cb */
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mei_io_cb_free(dev->iamthif_current_cb);
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dev->iamthif_current_cb = NULL;
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removed = true;
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}
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}
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return removed;
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}
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/**
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* mei_amthif_release - the release function
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*
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* @inode: pointer to inode structure
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* @file: pointer to file structure
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*
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* returns 0 on success, <0 on error
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*/
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int mei_amthif_release(struct mei_device *dev, struct file *file)
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{
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if (dev->open_handle_count > 0)
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dev->open_handle_count--;
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if (dev->iamthif_file_object == file &&
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dev->iamthif_state != MEI_IAMTHIF_IDLE) {
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dev_dbg(&dev->pdev->dev, "amthi canceled iamthif state %d\n",
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dev->iamthif_state);
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dev->iamthif_canceled = true;
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if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE) {
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dev_dbg(&dev->pdev->dev, "run next amthi iamthif cb\n");
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mei_amthif_run_next_cmd(dev);
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}
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}
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if (mei_clear_lists(dev, file))
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dev->iamthif_state = MEI_IAMTHIF_IDLE;
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return 0;
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}
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@ -89,90 +89,6 @@ MODULE_DEVICE_TABLE(pci, mei_pci_tbl);
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static DEFINE_MUTEX(mei_mutex);
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/**
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* mei_clear_list - removes all callbacks associated with file
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* from mei_cb_list
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*
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* @dev: device structure.
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* @file: file structure
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* @mei_cb_list: callbacks list
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*
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* mei_clear_list is called to clear resources associated with file
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* when application calls close function or Ctrl-C was pressed
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*
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* returns true if callback removed from the list, false otherwise
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*/
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static bool mei_clear_list(struct mei_device *dev,
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const struct file *file, struct list_head *mei_cb_list)
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{
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struct mei_cl_cb *cb_pos = NULL;
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struct mei_cl_cb *cb_next = NULL;
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bool removed = false;
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/* list all list member */
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list_for_each_entry_safe(cb_pos, cb_next, mei_cb_list, list) {
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/* check if list member associated with a file */
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if (file == cb_pos->file_object) {
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/* remove member from the list */
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list_del(&cb_pos->list);
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/* check if cb equal to current iamthif cb */
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if (dev->iamthif_current_cb == cb_pos) {
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dev->iamthif_current_cb = NULL;
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/* send flow control to iamthif client */
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mei_send_flow_control(dev, &dev->iamthif_cl);
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}
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/* free all allocated buffers */
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mei_io_cb_free(cb_pos);
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cb_pos = NULL;
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removed = true;
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}
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}
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return removed;
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}
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/**
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* mei_clear_lists - removes all callbacks associated with file
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*
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* @dev: device structure
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* @file: file structure
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*
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* mei_clear_lists is called to clear resources associated with file
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* when application calls close function or Ctrl-C was pressed
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*
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* returns true if callback removed from the list, false otherwise
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*/
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static bool mei_clear_lists(struct mei_device *dev, struct file *file)
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{
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bool removed = false;
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/* remove callbacks associated with a file */
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mei_clear_list(dev, file, &dev->amthif_cmd_list.list);
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if (mei_clear_list(dev, file, &dev->amthif_rd_complete_list.list))
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removed = true;
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mei_clear_list(dev, file, &dev->ctrl_rd_list.list);
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if (mei_clear_list(dev, file, &dev->ctrl_wr_list.list))
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removed = true;
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if (mei_clear_list(dev, file, &dev->write_waiting_list.list))
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removed = true;
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if (mei_clear_list(dev, file, &dev->write_list.list))
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removed = true;
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/* check if iamthif_current_cb not NULL */
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if (dev->iamthif_current_cb && !removed) {
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/* check file and iamthif current cb association */
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if (dev->iamthif_current_cb->file_object == file) {
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/* remove cb */
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mei_io_cb_free(dev->iamthif_current_cb);
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dev->iamthif_current_cb = NULL;
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removed = true;
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}
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}
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return removed;
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}
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/**
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* find_read_list_entry - find read list entry
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*
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@ -289,67 +205,51 @@ static int mei_release(struct inode *inode, struct file *file)
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dev = cl->dev;
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mutex_lock(&dev->device_lock);
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if (cl != &dev->iamthif_cl) {
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if (cl->state == MEI_FILE_CONNECTED) {
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cl->state = MEI_FILE_DISCONNECTING;
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dev_dbg(&dev->pdev->dev,
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"disconnecting client host client = %d, "
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"ME client = %d\n",
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cl->host_client_id,
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cl->me_client_id);
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rets = mei_disconnect_host_client(dev, cl);
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}
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mei_cl_flush_queues(cl);
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dev_dbg(&dev->pdev->dev, "remove client host client = %d, ME client = %d\n",
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if (cl == &dev->iamthif_cl) {
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rets = mei_amthif_release(dev, file);
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goto out;
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}
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if (cl->state == MEI_FILE_CONNECTED) {
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cl->state = MEI_FILE_DISCONNECTING;
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dev_dbg(&dev->pdev->dev,
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"disconnecting client host client = %d, "
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"ME client = %d\n",
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cl->host_client_id,
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cl->me_client_id);
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if (dev->open_handle_count > 0) {
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clear_bit(cl->host_client_id, dev->host_clients_map);
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dev->open_handle_count--;
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}
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mei_remove_client_from_file_list(dev, cl->host_client_id);
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/* free read cb */
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cb = NULL;
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if (cl->read_cb) {
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cb = find_read_list_entry(dev, cl);
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/* Remove entry from read list */
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if (cb)
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list_del(&cb->list);
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cb = cl->read_cb;
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cl->read_cb = NULL;
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}
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file->private_data = NULL;
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if (cb) {
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mei_io_cb_free(cb);
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cb = NULL;
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}
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kfree(cl);
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} else {
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if (dev->open_handle_count > 0)
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dev->open_handle_count--;
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if (dev->iamthif_file_object == file &&
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dev->iamthif_state != MEI_IAMTHIF_IDLE) {
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dev_dbg(&dev->pdev->dev, "amthi canceled iamthif state %d\n",
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dev->iamthif_state);
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dev->iamthif_canceled = true;
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if (dev->iamthif_state == MEI_IAMTHIF_READ_COMPLETE) {
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dev_dbg(&dev->pdev->dev, "run next amthi iamthif cb\n");
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mei_amthif_run_next_cmd(dev);
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}
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}
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if (mei_clear_lists(dev, file))
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dev->iamthif_state = MEI_IAMTHIF_IDLE;
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rets = mei_disconnect_host_client(dev, cl);
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}
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mei_cl_flush_queues(cl);
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dev_dbg(&dev->pdev->dev, "remove client host client = %d, ME client = %d\n",
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cl->host_client_id,
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cl->me_client_id);
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if (dev->open_handle_count > 0) {
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clear_bit(cl->host_client_id, dev->host_clients_map);
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dev->open_handle_count--;
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}
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mei_remove_client_from_file_list(dev, cl->host_client_id);
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/* free read cb */
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cb = NULL;
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if (cl->read_cb) {
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cb = find_read_list_entry(dev, cl);
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/* Remove entry from read list */
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if (cb)
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list_del(&cb->list);
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cb = cl->read_cb;
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cl->read_cb = NULL;
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}
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file->private_data = NULL;
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if (cb) {
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mei_io_cb_free(cb);
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cb = NULL;
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}
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kfree(cl);
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out:
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mutex_unlock(&dev->device_lock);
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return rets;
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}
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@ -389,6 +389,8 @@ int mei_amthif_write(struct mei_device *dev, struct mei_cl_cb *priv_cb);
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int mei_amthif_read(struct mei_device *dev, struct file *file,
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char __user *ubuf, size_t length, loff_t *offset);
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int mei_amthif_release(struct mei_device *dev, struct file *file);
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struct mei_cl_cb *mei_amthif_find_read_list_entry(struct mei_device *dev,
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struct file *file);
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