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mei: kill usless struct mei_io_list 

kill useless mei_io_list list wrapper and use directly
struct mei_cl_cb mei_cb which was its only member for managing io queues

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 2012-10-15 12:06:48 +02:00 committed by Greg Kroah-Hartman
parent 75f0ee1559
commit fb601adb35
5 changed files with 118 additions and 156 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
drivers/misc/mei/init.c
View File

@ -47,35 +47,23 @@ const uuid_le mei_amthi_guid = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, 0xac,
0xa8, 0x46, 0xe0, 0xff, 0x65,
0x81, 0x4c);
/**
* mei_io_list_init - Sets up a queue list.
*
* @list: An instance io list structure
* @dev: the device structure
*/
void mei_io_list_init(struct mei_io_list *list)
{
/* initialize our queue list */
INIT_LIST_HEAD(&list->mei_cb.cb_list);
}
/**
* mei_io_list_flush - removes list entry belonging to cl.
*
* @list: An instance of our list structure
* @cl: private data of the file object
*/
void mei_io_list_flush(struct mei_io_list *list, struct mei_cl *cl)
void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl)
{
struct mei_cl_cb *pos;
struct mei_cl_cb *next;
list_for_each_entry_safe(pos, next, &list->mei_cb.cb_list, cb_list) {
list_for_each_entry_safe(pos, next, &list->list, list) {
if (pos->file_private) {
struct mei_cl *cl_tmp;
cl_tmp = (struct mei_cl *)pos->file_private;
if (mei_cl_cmp_id(cl, cl_tmp))
list_del(&pos->cb_list);
list_del(&pos->list);
}
}
}
@ -351,9 +339,8 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled)
}
}
/* remove all waiting requests */
list_for_each_entry_safe(cb_pos, cb_next,
&dev->write_list.mei_cb.cb_list, cb_list) {
list_del(&cb_pos->cb_list);
list_for_each_entry_safe(cb_pos, cb_next, &dev->write_list.list, list) {
list_del(&cb_pos->list);
mei_free_cb_private(cb_pos);
}
}
@ -685,7 +672,7 @@ int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl)
if (!cb)
return -ENOMEM;
INIT_LIST_HEAD(&cb->cb_list);
mei_io_list_init(cb);
cb->file_private = cl;
cb->major_file_operations = MEI_CLOSE;
if (dev->mei_host_buffer_is_empty) {
@ -696,11 +683,11 @@ int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl)
goto free;
}
mdelay(10); /* Wait for hardware disconnection ready */
list_add_tail(&cb->cb_list, &dev->ctrl_rd_list.mei_cb.cb_list);
list_add_tail(&cb->list, &dev->ctrl_rd_list.list);
} else {
dev_dbg(&dev->pdev->dev, "add disconnect cb to control write list\n");
list_add_tail(&cb->cb_list,
&dev->ctrl_wr_list.mei_cb.cb_list);
list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
}
mutex_unlock(&dev->device_lock);

134
drivers/misc/mei/interrupt.c
View File

@ -87,9 +87,8 @@ static void _mei_cmpl_iamthif(struct mei_device *dev, struct mei_cl_cb *cb_pos)
memcpy(cb_pos->response_buffer.data,
dev->iamthif_msg_buf,
dev->iamthif_msg_buf_index);
list_add_tail(&cb_pos->cb_list,
&dev->amthi_read_complete_list.mei_cb.cb_list);
dev_dbg(&dev->pdev->dev, "amthi read completed.\n");
list_add_tail(&cb_pos->list, &dev->amthi_read_complete_list.list);
dev_dbg(&dev->pdev->dev, "amthi read completed\n");
dev->iamthif_timer = jiffies;
dev_dbg(&dev->pdev->dev, "dev->iamthif_timer = %ld\n",
dev->iamthif_timer);
@ -112,7 +111,7 @@ static void _mei_cmpl_iamthif(struct mei_device *dev, struct mei_cl_cb *cb_pos)
*
* returns 0 on success, <0 on failure.
*/
static int mei_irq_thread_read_amthi_message(struct mei_io_list *complete_list,
static int mei_irq_thread_read_amthi_message(struct mei_cl_cb *complete_list,
struct mei_device *dev,
struct mei_msg_hdr *mei_hdr)
{
@ -155,8 +154,7 @@ static int mei_irq_thread_read_amthi_message(struct mei_io_list *complete_list,
/* found the iamthif cb */
dev_dbg(&dev->pdev->dev, "complete the amthi read cb.\n ");
dev_dbg(&dev->pdev->dev, "add the amthi read cb to complete.\n ");
list_add_tail(&cb->cb_list,
&complete_list->mei_cb.cb_list);
list_add_tail(&cb->list, &complete_list->list);
}
return 0;
}
@ -188,7 +186,7 @@ static int _mei_irq_thread_state_ok(struct mei_cl *cl,
*
* returns 0 on success, <0 on failure.
*/
static int mei_irq_thread_read_client_message(struct mei_io_list *complete_list,
static int mei_irq_thread_read_client_message(struct mei_cl_cb *complete_list,
struct mei_device *dev,
struct mei_msg_hdr *mei_hdr)
{
@ -197,11 +195,10 @@ static int mei_irq_thread_read_client_message(struct mei_io_list *complete_list,
unsigned char *buffer = NULL;
dev_dbg(&dev->pdev->dev, "start client msg\n");
if (list_empty(&dev->read_list.mei_cb.cb_list))
if (list_empty(&dev->read_list.list))
goto quit;
list_for_each_entry_safe(cb_pos, cb_next,
&dev->read_list.mei_cb.cb_list, cb_list) {
list_for_each_entry_safe(cb_pos, cb_next, &dev->read_list.list, list) {
cl = (struct mei_cl *)cb_pos->file_private;
if (cl && _mei_irq_thread_state_ok(cl, mei_hdr)) {
cl->reading_state = MEI_READING;
@ -210,7 +207,7 @@ static int mei_irq_thread_read_client_message(struct mei_io_list *complete_list,
if (cb_pos->response_buffer.size <
mei_hdr->length + cb_pos->buf_idx) {
dev_dbg(&dev->pdev->dev, "message overflow.\n");
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
return -ENOMEM;
}
if (buffer)
@ -219,15 +216,15 @@ static int mei_irq_thread_read_client_message(struct mei_io_list *complete_list,
cb_pos->buf_idx += mei_hdr->length;
if (mei_hdr->msg_complete) {
cl->status = 0;
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
dev_dbg(&dev->pdev->dev,
"completed read H cl = %d, ME cl = %d, length = %lu\n",
cl->host_client_id,
cl->me_client_id,
cb_pos->buf_idx);
list_add_tail(&cb_pos->cb_list,
&complete_list->mei_cb.cb_list);
list_add_tail(&cb_pos->list,
&complete_list->list);
}
break;
@ -291,7 +288,7 @@ static int _mei_irq_thread_iamthif_read(struct mei_device *dev, s32 *slots)
static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb_pos,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
struct mei_cl_cb *cmpl_list)
{
if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_client_disconnect_request)))
@ -302,15 +299,13 @@ static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots,
if (mei_disconnect(dev, cl)) {
cl->status = 0;
cb_pos->buf_idx = 0;
list_move_tail(&cb_pos->cb_list,
&cmpl_list->mei_cb.cb_list);
list_move_tail(&cb_pos->list, &cmpl_list->list);
return -EMSGSIZE;
} else {
cl->state = MEI_FILE_DISCONNECTING;
cl->status = 0;
cb_pos->buf_idx = 0;
list_move_tail(&cb_pos->cb_list,
&dev->ctrl_rd_list.mei_cb.cb_list);
list_move_tail(&cb_pos->list, &dev->ctrl_rd_list.list);
cl->timer_count = MEI_CONNECT_TIMEOUT;
}
@ -357,7 +352,7 @@ static void mei_client_connect_response(struct mei_device *dev,
{
struct mei_cl *cl;
struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL;
struct mei_cl_cb *pos = NULL, *next = NULL;
dev_dbg(&dev->pdev->dev,
"connect_response:\n"
@ -383,17 +378,16 @@ static void mei_client_connect_response(struct mei_device *dev,
dev->iamthif_state = MEI_IAMTHIF_IDLE;
return;
}
list_for_each_entry_safe(cb_pos, cb_next,
&dev->ctrl_rd_list.mei_cb.cb_list, cb_list) {
list_for_each_entry_safe(pos, next, &dev->ctrl_rd_list.list, list) {
cl = (struct mei_cl *)cb_pos->file_private;
cl = (struct mei_cl *)pos->file_private;
if (!cl) {
list_del(&cb_pos->cb_list);
list_del(&pos->list);
return;
}
if (MEI_IOCTL == cb_pos->major_file_operations) {
if (MEI_IOCTL == pos->major_file_operations) {
if (is_treat_specially_client(cl, rs)) {
list_del(&cb_pos->cb_list);
list_del(&pos->list);
cl->status = 0;
cl->timer_count = 0;
break;
@ -412,7 +406,7 @@ static void mei_client_disconnect_response(struct mei_device *dev,
struct hbm_client_connect_response *rs)
{
struct mei_cl *cl;
struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL;
struct mei_cl_cb *pos = NULL, *next = NULL;
dev_dbg(&dev->pdev->dev,
"disconnect_response:\n"
@ -423,12 +417,11 @@ static void mei_client_disconnect_response(struct mei_device *dev,
rs->host_addr,
rs->status);
list_for_each_entry_safe(cb_pos, cb_next,
&dev->ctrl_rd_list.mei_cb.cb_list, cb_list) {
cl = (struct mei_cl *)cb_pos->file_private;
list_for_each_entry_safe(pos, next, &dev->ctrl_rd_list.list, list) {
cl = (struct mei_cl *)pos->file_private;
if (!cl) {
list_del(&cb_pos->cb_list);
list_del(&pos->list);
return;
}
@ -436,7 +429,7 @@ static void mei_client_disconnect_response(struct mei_device *dev,
if (cl->host_client_id == rs->host_addr &&
cl->me_client_id == rs->me_addr) {
list_del(&cb_pos->cb_list);
list_del(&pos->list);
if (!rs->status)
cl->state = MEI_FILE_DISCONNECTED;
@ -822,12 +815,12 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb_pos,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
struct mei_cl_cb *cmpl_list)
{
if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_flow_control))) {
/* return the cancel routine */
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
return -EBADMSG;
}
@ -836,10 +829,10 @@ static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
if (mei_send_flow_control(dev, cl)) {
cl->status = -ENODEV;
cb_pos->buf_idx = 0;
list_move_tail(&cb_pos->cb_list, &cmpl_list->mei_cb.cb_list);
list_move_tail(&cb_pos->list, &cmpl_list->list);
return -ENODEV;
}
list_move_tail(&cb_pos->cb_list, &dev->read_list.mei_cb.cb_list);
list_move_tail(&cb_pos->list, &dev->read_list.list);
return 0;
}
@ -859,12 +852,12 @@ static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb_pos,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
struct mei_cl_cb *cmpl_list)
{
if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_client_connect_request))) {
/* return the cancel routine */
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
return -EBADMSG;
}
@ -873,11 +866,10 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
if (mei_connect(dev, cl)) {
cl->status = -ENODEV;
cb_pos->buf_idx = 0;
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
return -ENODEV;
} else {
list_move_tail(&cb_pos->cb_list,
&dev->ctrl_rd_list.mei_cb.cb_list);
list_move_tail(&cb_pos->list, &dev->ctrl_rd_list.list);
cl->timer_count = MEI_CONNECT_TIMEOUT;
}
return 0;
@ -897,7 +889,7 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb_pos,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
struct mei_cl_cb *cmpl_list)
{
struct mei_msg_hdr *mei_hdr;
@ -924,16 +916,14 @@ static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
cb_pos->buf_idx),
mei_hdr->length)) {
cl->status = -ENODEV;
list_move_tail(&cb_pos->cb_list,
&cmpl_list->mei_cb.cb_list);
list_move_tail(&cb_pos->list, &cmpl_list->list);
return -ENODEV;
} else {
if (mei_flow_ctrl_reduce(dev, cl))
return -ENODEV;
cl->status = 0;
cb_pos->buf_idx += mei_hdr->length;
list_move_tail(&cb_pos->cb_list,
&dev->write_waiting_list.mei_cb.cb_list);
list_move_tail(&cb_pos->list, &dev->write_waiting_list.list);
}
} else if (*slots == dev->hbuf_depth) {
/* buffer is still empty */
@ -951,8 +941,7 @@ static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
cb_pos->buf_idx),
mei_hdr->length)) {
cl->status = -ENODEV;
list_move_tail(&cb_pos->cb_list,
&cmpl_list->mei_cb.cb_list);
list_move_tail(&cb_pos->list, &cmpl_list->list);
return -ENODEV;
} else {
cb_pos->buf_idx += mei_hdr->length;
@ -988,7 +977,7 @@ static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
struct mei_cl_cb *cb_pos,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
struct mei_cl_cb *cmpl_list)
{
struct mei_msg_hdr *mei_hdr;
@ -1011,7 +1000,7 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
mei_hdr->length)) {
dev->iamthif_state = MEI_IAMTHIF_IDLE;
cl->status = -ENODEV;
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
return -ENODEV;
} else {
if (mei_flow_ctrl_reduce(dev, cl))
@ -1023,8 +1012,7 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
dev->iamthif_flow_control_pending = true;
/* save iamthif cb sent to amthi client */
dev->iamthif_current_cb = cb_pos;
list_move_tail(&cb_pos->cb_list,
&dev->write_waiting_list.mei_cb.cb_list);
list_move_tail(&cb_pos->list, &dev->write_waiting_list.list);
}
} else if (*slots == dev->hbuf_depth) {
@ -1044,7 +1032,7 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
dev->iamthif_msg_buf_index),
mei_hdr->length)) {
cl->status = -ENODEV;
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
} else {
dev->iamthif_msg_buf_index += mei_hdr->length;
}
@ -1066,7 +1054,7 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
*
* returns 0 on success, <0 on failure.
*/
static int mei_irq_thread_read_handler(struct mei_io_list *cmpl_list,
static int mei_irq_thread_read_handler(struct mei_cl_cb *cmpl_list,
struct mei_device *dev,
s32 *slots)
{
@ -1169,14 +1157,13 @@ end:
*
* returns 0 on success, <0 on failure.
*/
static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
struct mei_device *dev,
s32 *slots)
static int mei_irq_thread_write_handler(struct mei_cl_cb *cmpl_list,
struct mei_device *dev, s32 *slots)
{
struct mei_cl *cl;
struct mei_cl_cb *pos = NULL, *next = NULL;
struct mei_io_list *list;
struct mei_cl_cb *list;
int ret;
if (!mei_hbuf_is_empty(dev)) {
@ -1191,20 +1178,19 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
dev_dbg(&dev->pdev->dev, "complete all waiting for write cb.\n");
list = &dev->write_waiting_list;
list_for_each_entry_safe(pos, next, &list->mei_cb.cb_list, cb_list) {
list_for_each_entry_safe(pos, next, &list->list, list) {
cl = (struct mei_cl *)pos->file_private;
if (cl == NULL)
continue;
cl->status = 0;
list_del(&pos->cb_list);
list_del(&pos->list);
if (MEI_WRITING == cl->writing_state &&
(pos->major_file_operations == MEI_WRITE) &&
(cl != &dev->iamthif_cl)) {
dev_dbg(&dev->pdev->dev, "MEI WRITE COMPLETE\n");
cl->writing_state = MEI_WRITE_COMPLETE;
list_add_tail(&pos->cb_list,
&cmpl_list->mei_cb.cb_list);
list_add_tail(&pos->list, &cmpl_list->list);
}
if (cl == &dev->iamthif_cl) {
dev_dbg(&dev->pdev->dev, "check iamthif flow control.\n");
@ -1250,11 +1236,10 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
/* complete control write list CB */
dev_dbg(&dev->pdev->dev, "complete control write list cb.\n");
list_for_each_entry_safe(pos, next,
&dev->ctrl_wr_list.mei_cb.cb_list, cb_list) {
list_for_each_entry_safe(pos, next, &dev->ctrl_wr_list.list, list) {
cl = (struct mei_cl *) pos->file_private;
if (!cl) {
list_del(&pos->cb_list);
list_del(&pos->list);
return -ENODEV;
}
switch (pos->major_file_operations) {
@ -1289,8 +1274,7 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
}
/* complete write list CB */
dev_dbg(&dev->pdev->dev, "complete write list cb.\n");
list_for_each_entry_safe(pos, next,
&dev->write_list.mei_cb.cb_list, cb_list) {
list_for_each_entry_safe(pos, next, &dev->write_list.list, list) {
cl = (struct mei_cl *)pos->file_private;
if (cl == NULL)
continue;
@ -1410,16 +1394,15 @@ void mei_timer(struct work_struct *work)
dev_dbg(&dev->pdev->dev, "freeing AMTHI for other requests\n");
amthi_complete_list = &dev->amthi_read_complete_list.
mei_cb.cb_list;
amthi_complete_list = &dev->amthi_read_complete_list.list;
list_for_each_entry_safe(cb_pos, cb_next, amthi_complete_list, cb_list) {
list_for_each_entry_safe(cb_pos, cb_next, amthi_complete_list, list) {
cl_pos = cb_pos->file_object->private_data;
/* Finding the AMTHI entry. */
if (cl_pos == &dev->iamthif_cl)
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
}
if (dev->iamthif_current_cb)
mei_free_cb_private(dev->iamthif_current_cb);
@ -1450,7 +1433,7 @@ out:
irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id)
{
struct mei_device *dev = (struct mei_device *) dev_id;
struct mei_io_list complete_list;
struct mei_cl_cb complete_list;
struct mei_cl_cb *cb_pos = NULL, *cb_next = NULL;
struct mei_cl *cl;
s32 slots;
@ -1530,14 +1513,13 @@ end:
wake_up_interruptible(&dev->wait_recvd_msg);
bus_message_received = false;
}
if (list_empty(&complete_list.mei_cb.cb_list))
if (list_empty(&complete_list.list))
return IRQ_HANDLED;
list_for_each_entry_safe(cb_pos, cb_next,
&complete_list.mei_cb.cb_list, cb_list) {
list_for_each_entry_safe(cb_pos, cb_next, &complete_list.list, list) {
cl = (struct mei_cl *)cb_pos->file_private;
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
if (cl) {
if (cl != &dev->iamthif_cl) {
dev_dbg(&dev->pdev->dev, "completing call back.\n");

34
drivers/misc/mei/iorw.c
View File

@ -104,7 +104,7 @@ int mei_ioctl_connect_client(struct file *file,
rets = -ENOMEM;
goto end;
}
INIT_LIST_HEAD(&cb->cb_list);
mei_io_list_init(cb);
cb->major_file_operations = MEI_IOCTL;
@ -193,9 +193,7 @@ int mei_ioctl_connect_client(struct file *file,
dev_dbg(&dev->pdev->dev, "Sending connect message - succeeded\n");
cl->timer_count = MEI_CONNECT_TIMEOUT;
cb->file_private = cl;
list_add_tail(&cb->cb_list,
&dev->ctrl_rd_list.mei_cb.
cb_list);
list_add_tail(&cb->list, &dev->ctrl_rd_list.list);
}
@ -203,8 +201,7 @@ int mei_ioctl_connect_client(struct file *file,
dev_dbg(&dev->pdev->dev, "Queuing the connect request due to device busy\n");
cb->file_private = cl;
dev_dbg(&dev->pdev->dev, "add connect cb to control write list.\n");
list_add_tail(&cb->cb_list,
&dev->ctrl_wr_list.mei_cb.cb_list);
list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
}
mutex_unlock(&dev->device_lock);
err = wait_event_timeout(dev->wait_recvd_msg,
@ -255,7 +252,7 @@ struct mei_cl_cb *find_amthi_read_list_entry(
struct mei_cl_cb *next = NULL;
list_for_each_entry_safe(pos, next,
&dev->amthi_read_complete_list.mei_cb.cb_list, cb_list) {
&dev->amthi_read_complete_list.list, list) {
cl_temp = (struct mei_cl *)pos->file_private;
if (cl_temp && cl_temp == &dev->iamthif_cl &&
pos->file_object == file)
@ -340,17 +337,17 @@ int amthi_read(struct mei_device *dev, struct file *file,
if (time_after(jiffies, timeout)) {
dev_dbg(&dev->pdev->dev, "amthi Time out\n");
/* 15 sec for the message has expired */
list_del(&cb->cb_list);
list_del(&cb->list);
rets = -ETIMEDOUT;
goto free;
}
}
/* if the whole message will fit remove it from the list */
if (cb->buf_idx >= *offset && length >= (cb->buf_idx - *offset))
list_del(&cb->cb_list);
list_del(&cb->list);
else if (cb->buf_idx > 0 && cb->buf_idx <= *offset) {
/* end of the message has been reached */
list_del(&cb->cb_list);
list_del(&cb->list);
rets = 0;
goto free;
}
@ -441,9 +438,9 @@ int mei_start_read(struct mei_device *dev, struct mei_cl *cl)
rets = -ENODEV;
goto unlock;
}
list_add_tail(&cb->cb_list, &dev->read_list.mei_cb.cb_list);
list_add_tail(&cb->list, &dev->read_list.list);
} else {
list_add_tail(&cb->cb_list, &dev->ctrl_wr_list.mei_cb.cb_list);
list_add_tail(&cb->list, &dev->ctrl_wr_list.list);
}
return rets;
unlock:
@ -510,13 +507,11 @@ int amthi_write(struct mei_device *dev, struct mei_cl_cb *cb)
dev_dbg(&dev->pdev->dev, "add amthi cb to write waiting list\n");
dev->iamthif_current_cb = cb;
dev->iamthif_file_object = cb->file_object;
list_add_tail(&cb->cb_list,
&dev->write_waiting_list.mei_cb.cb_list);
list_add_tail(&cb->list, &dev->write_waiting_list.list);
} else {
dev_dbg(&dev->pdev->dev, "message does not complete, "
"so add amthi cb to write list.\n");
list_add_tail(&cb->cb_list,
&dev->write_list.mei_cb.cb_list);
list_add_tail(&cb->list, &dev->write_list.list);
}
} else {
if (!(dev->mei_host_buffer_is_empty))
@ -524,7 +519,7 @@ int amthi_write(struct mei_device *dev, struct mei_cl_cb *cb)
dev_dbg(&dev->pdev->dev, "No flow control credentials, "
"so add iamthif cb to write list.\n");
list_add_tail(&cb->cb_list, &dev->write_list.mei_cb.cb_list);
list_add_tail(&cb->list, &dev->write_list.list);
}
return 0;
}
@ -556,9 +551,8 @@ void mei_run_next_iamthif_cmd(struct mei_device *dev)
dev_dbg(&dev->pdev->dev, "complete amthi cmd_list cb.\n");
list_for_each_entry_safe(pos, next,
&dev->amthi_cmd_list.mei_cb.cb_list, cb_list) {
list_del(&pos->cb_list);
list_for_each_entry_safe(pos, next, &dev->amthi_cmd_list.list, list) {
list_del(&pos->list);
cl_tmp = (struct mei_cl *)pos->file_private;
if (cl_tmp && cl_tmp == &dev->iamthif_cl) {

43
drivers/misc/mei/main.c
View File

@ -111,12 +111,12 @@ static bool mei_clear_list(struct mei_device *dev,
bool removed = false;
/* list all list member */
list_for_each_entry_safe(cb_pos, cb_next, mei_cb_list, cb_list) {
list_for_each_entry_safe(cb_pos, cb_next, mei_cb_list, list) {
file_temp = (struct file *)cb_pos->file_object;
/* check if list member associated with a file */
if (file_temp == file) {
/* remove member from the list */
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
/* check if cb equal to current iamthif cb */
if (dev->iamthif_current_cb == cb_pos) {
dev->iamthif_current_cb = NULL;
@ -148,20 +148,20 @@ static bool mei_clear_lists(struct mei_device *dev, struct file *file)
bool removed = false;
/* remove callbacks associated with a file */
mei_clear_list(dev, file, &dev->amthi_cmd_list.mei_cb.cb_list);
mei_clear_list(dev, file, &dev->amthi_cmd_list.list);
if (mei_clear_list(dev, file,
&dev->amthi_read_complete_list.mei_cb.cb_list))
&dev->amthi_read_complete_list.list))
removed = true;
mei_clear_list(dev, file, &dev->ctrl_rd_list.mei_cb.cb_list);
mei_clear_list(dev, file, &dev->ctrl_rd_list.list);
if (mei_clear_list(dev, file, &dev->ctrl_wr_list.mei_cb.cb_list))
if (mei_clear_list(dev, file, &dev->ctrl_wr_list.list))
removed = true;
if (mei_clear_list(dev, file, &dev->write_waiting_list.mei_cb.cb_list))
if (mei_clear_list(dev, file, &dev->write_waiting_list.list))
removed = true;
if (mei_clear_list(dev, file, &dev->write_list.mei_cb.cb_list))
if (mei_clear_list(dev, file, &dev->write_list.list))
removed = true;
/* check if iamthif_current_cb not NULL */
@ -192,8 +192,7 @@ static struct mei_cl_cb *find_read_list_entry(
struct mei_cl_cb *next = NULL;
dev_dbg(&dev->pdev->dev, "remove read_list CB\n");
list_for_each_entry_safe(pos, next,
&dev->read_list.mei_cb.cb_list, cb_list) {
list_for_each_entry_safe(pos, next, &dev->read_list.list, list) {
struct mei_cl *cl_temp;
cl_temp = (struct mei_cl *)pos->file_private;
@ -324,7 +323,7 @@ static int mei_release(struct inode *inode, struct file *file)
cb = find_read_list_entry(dev, cl);
/* Remove entry from read list */
if (cb)
list_del(&cb->cb_list);
list_del(&cb->list);
cb = cl->read_cb;
cl->read_cb = NULL;
@ -504,7 +503,7 @@ free:
cb_pos = find_read_list_entry(dev, cl);
/* Remove entry from read list */
if (cb_pos)
list_del(&cb_pos->cb_list);
list_del(&cb_pos->list);
mei_free_cb_private(cb);
cl->reading_state = MEI_IDLE;
cl->read_cb = NULL;
@ -534,7 +533,7 @@ static struct mei_cl_cb *mei_io_cb_init(struct mei_cl *cl, struct file *fp)
if (!cb)
return NULL;
INIT_LIST_HEAD(&cb->cb_list);
mei_io_list_init(cb);
cb->file_object = fp;
cb->file_private = cl;
@ -651,7 +650,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
if (time_after(jiffies, timeout) ||
cl->reading_state == MEI_READ_COMPLETE) {
*offset = 0;
list_del(&write_cb->cb_list);
list_del(&write_cb->list);
mei_free_cb_private(write_cb);
write_cb = NULL;
}
@ -663,7 +662,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
*offset = 0;
write_cb = find_read_list_entry(dev, cl);
if (write_cb) {
list_del(&write_cb->cb_list);
list_del(&write_cb->list);
mei_free_cb_private(write_cb);
write_cb = NULL;
cl->reading_state = MEI_IDLE;
@ -707,13 +706,12 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
write_cb->major_file_operations = MEI_IOCTL;
if (!list_empty(&dev->amthi_cmd_list.mei_cb.cb_list) ||
if (!list_empty(&dev->amthi_cmd_list.list) ||
dev->iamthif_state != MEI_IAMTHIF_IDLE) {
dev_dbg(&dev->pdev->dev, "amthi_state = %d\n",
(int) dev->iamthif_state);
dev_dbg(&dev->pdev->dev, "add amthi cb to amthi cmd waiting list\n");
list_add_tail(&write_cb->cb_list,
&dev->amthi_cmd_list.mei_cb.cb_list);
list_add_tail(&write_cb->list, &dev->amthi_cmd_list.list);
} else {
dev_dbg(&dev->pdev->dev, "call amthi write\n");
rets = amthi_write(dev, write_cb);
@ -764,19 +762,16 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
rets = -ENODEV;
goto unlock_dev;
}
list_add_tail(&write_cb->cb_list,
&dev->write_waiting_list.mei_cb.cb_list);
list_add_tail(&write_cb->list, &dev->write_waiting_list.list);
} else {
list_add_tail(&write_cb->cb_list,
&dev->write_list.mei_cb.cb_list);
list_add_tail(&write_cb->list, &dev->write_list.list);
}
} else {
write_cb->buf_idx = 0;
cl->writing_state = MEI_WRITING;
list_add_tail(&write_cb->cb_list,
&dev->write_list.mei_cb.cb_list);
list_add_tail(&write_cb->list, &dev->write_list.list);
}
mutex_unlock(&dev->device_lock);
return length;

32
drivers/misc/mei/mei_dev.h
View File

@ -144,7 +144,7 @@ struct mei_message_data {
struct mei_cl_cb {
struct list_head cb_list;
struct list_head list;
enum mei_cb_major_types major_file_operations;
void *file_private;
struct mei_message_data request_buffer;
@ -175,10 +175,6 @@ struct mei_cl {
struct mei_cl_cb *read_cb;
};
struct mei_io_list {
struct mei_cl_cb mei_cb;
};
/**
* struct mei_deive - MEI private device struct
* @hbuf_depth - depth of host(write) buffer
@ -189,15 +185,15 @@ struct mei_device {
* lists of queues
*/
/* array of pointers to aio lists */
struct mei_io_list read_list; /* driver read queue */
struct mei_io_list write_list; /* driver write queue */
struct mei_io_list write_waiting_list; /* write waiting queue */
struct mei_io_list ctrl_wr_list; /* managed write IOCTL list */
struct mei_io_list ctrl_rd_list; /* managed read IOCTL list */
struct mei_io_list amthi_cmd_list; /* amthi list for cmd waiting */
struct mei_cl_cb read_list; /* driver read queue */
struct mei_cl_cb write_list; /* driver write queue */
struct mei_cl_cb write_waiting_list; /* write waiting queue */
struct mei_cl_cb ctrl_wr_list; /* managed write IOCTL list */
struct mei_cl_cb ctrl_rd_list; /* managed read IOCTL list */
struct mei_cl_cb amthi_cmd_list; /* amthi list for cmd waiting */
/* driver managed amthi list for reading completed amthi cmd data */
struct mei_io_list amthi_read_complete_list;
struct mei_cl_cb amthi_read_complete_list;
/*
* list of files
*/
@ -297,8 +293,16 @@ int mei_me_cl_by_id(struct mei_device *dev, u8 client_id);
/*
* MEI IO List Functions
*/
void mei_io_list_init(struct mei_io_list *list);
void mei_io_list_flush(struct mei_io_list *list, struct mei_cl *cl);
/**
* mei_io_list_init - Sets up a queue list.
*
* @list: An instance cl callback structure
*/
static inline void mei_io_list_init(struct mei_cl_cb *list)
{
INIT_LIST_HEAD(&list->list);
}
void mei_io_list_flush(struct mei_cl_cb *list, struct mei_cl *cl);
/*
* MEI ME Client Functions