xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

mei: revamp client connection

Browse Source 
Simplify connect state machine by changing the logic around
Connection request in progress - only check if we have a callback in
relevant queue.
Extract common code into mei_cl_send_connect() function

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Alexander Usyskin <alexander.usyskin@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tomas Winkler
2015-05-04 09:43:53 +03:00
committed by Greg Kroah-Hartman
parent 3c66618295
commit 0c53357ca4
4 changed files with 83 additions and 66 deletions
Download Patch File Download Diff File Expand all files Collapse all files

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

@@ -223,49 +223,6 @@ static int mei_cl_irq_read(struct mei_cl *cl, struct mei_cl_cb *cb,
return 0;
}
/**
* mei_cl_irq_connect - send connect request in irq_thread context
*
* @cl: client
* @cb: callback block.
* @cmpl_list: complete list.
*
* Return: 0, OK; otherwise, error.
*/
static int mei_cl_irq_connect(struct mei_cl *cl, struct mei_cl_cb *cb,
struct mei_cl_cb *cmpl_list)
{
struct mei_device *dev = cl->dev;
u32 msg_slots;
int slots;
int ret;
msg_slots = mei_data2slots(sizeof(struct hbm_client_connect_request));
slots = mei_hbuf_empty_slots(dev);
if (mei_cl_is_other_connecting(cl))
return 0;
if (slots < msg_slots)
return -EMSGSIZE;
cl->state = MEI_FILE_CONNECTING;
ret = mei_hbm_cl_connect_req(dev, cl);
if (ret) {
cl->status = ret;
cb->buf_idx = 0;
list_del_init(&cb->list);
return ret;
}
list_move_tail(&cb->list, &dev->ctrl_rd_list.list);
cl->timer_count = MEI_CONNECT_TIMEOUT;
return 0;
}
/**
* mei_irq_read_handler - bottom half read routine after ISR to
* handle the read processing.