* [PATCH 1/9] mei: cosmetic cleanup in interrupt.c
2012-02-24 1:38 Devin J. Pohly
@ 2012-02-24 1:38 ` Devin J. Pohly
2012-02-24 2:51 ` Greg KH
2012-02-24 1:38 ` [PATCH 2/9] mei: factor some bits of code outside if blocks Devin J. Pohly
` (7 subsequent siblings)
8 siblings, 1 reply; 12+ messages in thread
From: Devin J. Pohly @ 2012-02-24 1:38 UTC (permalink / raw)
To: gregkh; +Cc: linux-kernel, Devin J. Pohly
From: "Devin J. Pohly" <djpohly@gmail.com>
Tabs, spaces, long lines, lines that could be combined, superfluous
parentheses, etc. Also uses DIV_ROUND_UP and sizeof(*ptr) where
appropriate.
Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
---
drivers/staging/mei/init.c | 2 +-
drivers/staging/mei/interrupt.c | 239 +++++++++++++++++--------------------
drivers/staging/mei/mei_dev.h | 3 +-
drivers/staging/mei/mei_version.h | 6 +-
drivers/staging/mei/wd.c | 23 ++--
5 files changed, 131 insertions(+), 142 deletions(-)
diff --git a/drivers/staging/mei/init.c b/drivers/staging/mei/init.c
index 4ac3696..1a00ede 100644
--- a/drivers/staging/mei/init.c
+++ b/drivers/staging/mei/init.c
@@ -455,7 +455,7 @@ void mei_allocate_me_clients_storage(struct mei_device *dev)
* @dev: the device structure
*
* returns:
- * < 0 - Error.
+ * < 0 - Error.
* = 0 - no more clients.
* = 1 - still have clients to send properties request.
*/
diff --git a/drivers/staging/mei/interrupt.c b/drivers/staging/mei/interrupt.c
index 3544fee..4914589 100644
--- a/drivers/staging/mei/interrupt.c
+++ b/drivers/staging/mei/interrupt.c
@@ -14,7 +14,6 @@
*
*/
-
#include <linux/pci.h>
#include <linux/kthread.h>
#include <linux/interrupt.h>
@@ -26,7 +25,6 @@
#include "hw.h"
#include "interface.h"
-
/**
* mei_interrupt_quick_handler - The ISR of the MEI device
*
@@ -69,7 +67,6 @@ static void _mei_cmpl(struct mei_cl *cl, struct mei_cl_cb *cb_pos)
cl->reading_state = MEI_READ_COMPLETE;
if (waitqueue_active(&cl->rx_wait))
wake_up_interruptible(&cl->rx_wait);
-
}
}
@@ -101,7 +98,6 @@ static void _mei_cmpl_iamthif(struct mei_device *dev, struct mei_cl_cb *cb_pos)
wake_up_interruptible(&dev->iamthif_cl.wait);
}
-
/**
* mei_irq_thread_read_amthi_message - bottom half read routine after ISR to
* handle the read amthi message data processing.
@@ -150,14 +146,13 @@ static int mei_irq_thread_read_amthi_message(struct mei_io_list *complete_list,
return -ENODEV;
dev->iamthif_stall_timer = 0;
- cb->information = dev->iamthif_msg_buf_index;
+ cb->information = dev->iamthif_msg_buf_index;
cb->read_time = jiffies;
if (dev->iamthif_ioctl && cl == &dev->iamthif_cl) {
/* 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->cb_list, &complete_list->mei_cb.cb_list);
}
return 0;
}
@@ -266,11 +261,10 @@ quit:
*/
static int _mei_irq_thread_iamthif_read(struct mei_device *dev, s32 *slots)
{
-
if (((*slots) * sizeof(u32)) >= (sizeof(struct mei_msg_hdr)
+ sizeof(struct hbm_flow_control))) {
- *slots -= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_flow_control) + 3) / 4;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_flow_control), sizeof(u32));
if (!mei_send_flow_control(dev, &dev->iamthif_cl)) {
dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n");
} else {
@@ -307,8 +301,9 @@ static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots,
{
if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_client_disconnect_request))) {
- *slots -= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_disconnect_request) + 3) / 4;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_client_disconnect_request),
+ sizeof(u32));
if (!mei_disconnect(dev, cl)) {
cl->status = 0;
@@ -345,7 +340,7 @@ static bool is_treat_specially_client(struct mei_cl *cl,
{
if (cl->host_client_id == rs->host_addr &&
- cl->me_client_id == rs->me_addr) {
+ cl->me_client_id == rs->me_addr) {
if (!rs->status) {
cl->state = MEI_FILE_CONNECTED;
cl->status = 0;
@@ -449,7 +444,7 @@ static void mei_client_disconnect_response(struct mei_device *dev,
dev_dbg(&dev->pdev->dev, "list_for_each_entry_safe in ctrl_rd_list.\n");
if (cl->host_client_id == rs->host_addr &&
- cl->me_client_id == rs->me_addr) {
+ cl->me_client_id == rs->me_addr) {
list_del(&cb_pos->cb_list);
if (!rs->status)
@@ -483,7 +478,7 @@ static int same_flow_addr(struct mei_cl *cl, struct hbm_flow_control *flow)
* @flow: flow control.
*/
static void add_single_flow_creds(struct mei_device *dev,
- struct hbm_flow_control *flow)
+ struct hbm_flow_control *flow)
{
struct mei_me_client *client;
int i;
@@ -494,9 +489,9 @@ static void add_single_flow_creds(struct mei_device *dev,
if (client->props.single_recv_buf) {
client->mei_flow_ctrl_creds++;
dev_dbg(&dev->pdev->dev, "recv flow ctrl msg ME %d (single).\n",
- flow->me_addr);
+ flow->me_addr);
dev_dbg(&dev->pdev->dev, "flow control credentials =%d.\n",
- client->mei_flow_ctrl_creds);
+ client->mei_flow_ctrl_creds);
} else {
BUG(); /* error in flow control */
}
@@ -526,18 +521,18 @@ static void mei_client_flow_control_response(struct mei_device *dev,
dev_dbg(&dev->pdev->dev, "list_for_each_entry_safe in file_list\n");
dev_dbg(&dev->pdev->dev, "cl of host client %d ME client %d.\n",
- cl_pos->host_client_id,
- cl_pos->me_client_id);
+ cl_pos->host_client_id,
+ cl_pos->me_client_id);
dev_dbg(&dev->pdev->dev, "flow ctrl msg for host %d ME %d.\n",
- flow_control->host_addr,
- flow_control->me_addr);
+ flow_control->host_addr,
+ flow_control->me_addr);
if (same_flow_addr(cl_pos, flow_control)) {
dev_dbg(&dev->pdev->dev, "recv ctrl msg for host %d ME %d.\n",
- flow_control->host_addr,
- flow_control->me_addr);
+ flow_control->host_addr,
+ flow_control->me_addr);
cl_pos->mei_flow_ctrl_creds++;
dev_dbg(&dev->pdev->dev, "flow control credentials = %d.\n",
- cl_pos->mei_flow_ctrl_creds);
+ cl_pos->mei_flow_ctrl_creds);
break;
}
}
@@ -553,7 +548,7 @@ static void mei_client_flow_control_response(struct mei_device *dev,
* returns !=0, same; 0,not.
*/
static int same_disconn_addr(struct mei_cl *cl,
- struct hbm_client_disconnect_request *disconn)
+ struct hbm_client_disconnect_request *disconn)
{
return (cl->host_client_id == disconn->host_addr &&
cl->me_client_id == disconn->me_addr);
@@ -591,8 +586,7 @@ static void mei_client_disconnect_request(struct mei_device *dev,
(struct mei_msg_hdr *) &dev->ext_msg_buf[0];
mei_hdr->host_addr = 0;
mei_hdr->me_addr = 0;
- mei_hdr->length =
- sizeof(struct hbm_client_connect_response);
+ mei_hdr->length = sizeof(*disconnect_res);
mei_hdr->msg_complete = 1;
mei_hdr->reserved = 0;
@@ -610,7 +604,6 @@ static void mei_client_disconnect_request(struct mei_device *dev,
}
}
-
/**
* mei_irq_thread_read_bus_message - bottom half read routine after ISR to
* handle the read bus message cmd processing.
@@ -647,7 +640,8 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
dev->version.major_version = HBM_MAJOR_VERSION;
dev->version.minor_version = HBM_MINOR_VERSION;
if (dev->mei_state == MEI_INIT_CLIENTS &&
- dev->init_clients_state == MEI_START_MESSAGE) {
+ dev->init_clients_state ==
+ MEI_START_MESSAGE) {
dev->init_clients_timer = 0;
mei_host_enum_clients_message(dev);
} else {
@@ -661,21 +655,19 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
/* send stop message */
mei_hdr->host_addr = 0;
mei_hdr->me_addr = 0;
- mei_hdr->length = sizeof(struct hbm_host_stop_request);
+ mei_hdr->length = sizeof(*host_stop_req);
mei_hdr->msg_complete = 1;
mei_hdr->reserved = 0;
host_stop_req = (struct hbm_host_stop_request *)
&dev->wr_msg_buf[1];
- memset(host_stop_req,
- 0,
- sizeof(struct hbm_host_stop_request));
+ memset(host_stop_req, 0, sizeof(*host_stop_req));
host_stop_req->cmd.cmd = HOST_STOP_REQ_CMD;
host_stop_req->reason = DRIVER_STOP_REQUEST;
mei_write_message(dev, mei_hdr,
- (unsigned char *) (host_stop_req),
- mei_hdr->length);
+ (unsigned char *) (host_stop_req),
+ mei_hdr->length);
dev_dbg(&dev->pdev->dev, "version mismatch.\n");
return;
}
@@ -685,16 +677,14 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
break;
case CLIENT_CONNECT_RES_CMD:
- connect_res =
- (struct hbm_client_connect_response *) mei_msg;
+ connect_res = (struct hbm_client_connect_response *) mei_msg;
mei_client_connect_response(dev, connect_res);
dev_dbg(&dev->pdev->dev, "client connect response message received.\n");
wake_up(&dev->wait_recvd_msg);
break;
case CLIENT_DISCONNECT_RES_CMD:
- disconnect_res =
- (struct hbm_client_connect_response *) mei_msg;
+ disconnect_res = (struct hbm_client_connect_response *) mei_msg;
mei_client_disconnect_response(dev, disconnect_res);
dev_dbg(&dev->pdev->dev, "client disconnect response message received.\n");
wake_up(&dev->wait_recvd_msg);
@@ -720,12 +710,12 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
= props_res->client_properties;
if (dev->mei_state == MEI_INIT_CLIENTS &&
- dev->init_clients_state ==
+ dev->init_clients_state ==
MEI_CLIENT_PROPERTIES_MESSAGE) {
dev->me_client_index++;
dev->me_client_presentation_num++;
- /** Send Client Propeties request **/
+ /* Send Client Properties request */
res = mei_host_client_properties(dev);
if (res < 0) {
dev_dbg(&dev->pdev->dev, "mei_host_client_properties() failed");
@@ -733,24 +723,28 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
} else if (!res) {
/*
* No more clients to send to.
- * Clear Map for indicating now ME clients
- * with associated host client
+ * Clear Map for indicating now ME
+ * clients with associated host client
*/
- bitmap_zero(dev->host_clients_map, MEI_CLIENTS_MAX);
+ bitmap_zero(dev->host_clients_map,
+ MEI_CLIENTS_MAX);
dev->open_handle_count = 0;
/*
* Reserving the first three client IDs
- * Client Id 0 - Reserved for MEI Bus Message communications
+ * Client Id 0 - Reserved for MEI Bus
+ * Message communications
* Client Id 1 - Reserved for Watchdog
* Client ID 2 - Reserved for AMTHI
*/
bitmap_set(dev->host_clients_map, 0, 3);
dev->mei_state = MEI_ENABLED;
- /* if wd initialization fails, initialization the AMTHI client,
- * otherwise the AMTHI client will be initialized after the WD client connect response
- * will be received
+ /* if wd initialization fails,
+ * initialize the AMTHI client,
+ * otherwise the AMTHI client will be
+ * initialized after the WD client
+ * connect response is received
*/
if (mei_wd_host_init(dev))
mei_host_init_iamthif(dev);
@@ -772,14 +766,15 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
enum_res = (struct hbm_host_enum_response *) mei_msg;
memcpy(dev->me_clients_map, enum_res->valid_addresses, 32);
if (dev->mei_state == MEI_INIT_CLIENTS &&
- dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) {
- dev->init_clients_timer = 0;
- dev->me_client_presentation_num = 0;
- dev->me_client_index = 0;
- mei_allocate_me_clients_storage(dev);
- dev->init_clients_state =
- MEI_CLIENT_PROPERTIES_MESSAGE;
- mei_host_client_properties(dev);
+ dev->init_clients_state ==
+ MEI_ENUM_CLIENTS_MESSAGE) {
+ dev->init_clients_timer = 0;
+ dev->me_client_presentation_num = 0;
+ dev->me_client_index = 0;
+ mei_allocate_me_clients_storage(dev);
+ dev->init_clients_state =
+ MEI_CLIENT_PROPERTIES_MESSAGE;
+ mei_host_client_properties(dev);
} else {
dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n");
mei_reset(dev, 1);
@@ -805,12 +800,12 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
mei_hdr = (struct mei_msg_hdr *) &dev->ext_msg_buf[0];
mei_hdr->host_addr = 0;
mei_hdr->me_addr = 0;
- mei_hdr->length = sizeof(struct hbm_host_stop_request);
+ mei_hdr->length = sizeof(*host_stop_req);
mei_hdr->msg_complete = 1;
mei_hdr->reserved = 0;
host_stop_req =
(struct hbm_host_stop_request *) &dev->ext_msg_buf[1];
- memset(host_stop_req, 0, sizeof(struct hbm_host_stop_request));
+ memset(host_stop_req, 0, sizeof(*host_stop_req));
host_stop_req->cmd.cmd = HOST_STOP_REQ_CMD;
host_stop_req->reason = DRIVER_STOP_REQUEST;
host_stop_req->reserved[0] = 0;
@@ -821,11 +816,9 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
default:
BUG();
break;
-
}
}
-
/**
* _mei_hb_read - processes read related operation.
*
@@ -837,15 +830,15 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
*
* returns 0, OK; otherwise, error.
*/
-static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
+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)
{
if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_flow_control))) {
- *slots -= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_flow_control) + 3) / 4;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_flow_control), sizeof(u32));
if (!mei_send_flow_control(dev, cl)) {
cl->status = -ENODEV;
cb_pos->information = 0;
@@ -865,7 +858,6 @@ static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
return 0;
}
-
/**
* _mei_irq_thread_ioctl - processes ioctl related operation.
*
@@ -885,8 +877,8 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_client_connect_request))) {
cl->state = MEI_FILE_CONNECTING;
- *slots -= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_connect_request) + 3) / 4;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_client_connect_request), sizeof(u32));
if (!mei_connect(dev, cl)) {
cl->status = -ENODEV;
cb_pos->information = 0;
@@ -917,7 +909,7 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
*
* returns 0, OK; otherwise, error.
*/
-static int _mei_irq_thread_cmpl(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)
@@ -942,8 +934,8 @@ static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
cb_pos->information);
dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n",
mei_hdr->length);
- *slots -= (sizeof(struct mei_msg_hdr) +
- mei_hdr->length + 3) / 4;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ mei_hdr->length, sizeof(u32));
if (!mei_write_message(dev, mei_hdr,
(unsigned char *)
(cb_pos->request_buffer.data +
@@ -966,13 +958,12 @@ static int _mei_irq_thread_cmpl(struct mei_device *dev, s32 *slots,
mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0];
mei_hdr->host_addr = cl->host_client_id;
mei_hdr->me_addr = cl->me_client_id;
- mei_hdr->length =
- (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
+ mei_hdr->length = (*slots * sizeof(u32)) - sizeof(*mei_hdr);
mei_hdr->msg_complete = 0;
mei_hdr->reserved = 0;
- (*slots) -= (sizeof(struct mei_msg_hdr) +
- mei_hdr->length + 3) / 4;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ mei_hdr->length, sizeof(u32));
if (!mei_write_message(dev, mei_hdr,
(unsigned char *)
(cb_pos->request_buffer.data +
@@ -1031,8 +1022,8 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
mei_hdr->msg_complete = 1;
mei_hdr->reserved = 0;
- *slots -= (sizeof(struct mei_msg_hdr) +
- mei_hdr->length + 3) / 4;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ mei_hdr->length, sizeof(u32));
if (!mei_write_message(dev, mei_hdr,
(dev->iamthif_msg_buf +
@@ -1061,13 +1052,12 @@ static int _mei_irq_thread_cmpl_iamthif(struct mei_device *dev, s32 *slots,
mei_hdr = (struct mei_msg_hdr *) &dev->wr_msg_buf[0];
mei_hdr->host_addr = cl->host_client_id;
mei_hdr->me_addr = cl->me_client_id;
- mei_hdr->length =
- (*slots * sizeof(u32)) - sizeof(struct mei_msg_hdr);
+ mei_hdr->length = (*slots * sizeof(u32)) - sizeof(*mei_hdr);
mei_hdr->msg_complete = 0;
mei_hdr->reserved = 0;
- *slots -= (sizeof(struct mei_msg_hdr) +
- mei_hdr->length + 3) / 4;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ mei_hdr->length, sizeof(u32));
if (!mei_write_message(dev, mei_hdr,
(dev->iamthif_msg_buf +
@@ -1129,7 +1119,8 @@ static int mei_irq_thread_read_handler(struct mei_io_list *cmpl_list,
cl_pos->host_client_id,
cl_pos->me_client_id);
if (cl_pos->host_client_id == mei_hdr->host_addr &&
- cl_pos->me_client_id == mei_hdr->me_addr)
+ cl_pos->me_client_id ==
+ mei_hdr->me_addr)
break;
}
@@ -1154,8 +1145,8 @@ static int mei_irq_thread_read_handler(struct mei_io_list *cmpl_list,
mei_irq_thread_read_bus_message(dev, mei_hdr);
dev_dbg(&dev->pdev->dev, "end mei_irq_thread_read_bus_message.\n");
} else if (mei_hdr->host_addr == dev->iamthif_cl.host_client_id &&
- (MEI_FILE_CONNECTED == dev->iamthif_cl.state) &&
- (dev->iamthif_state == MEI_IAMTHIF_READING)) {
+ (MEI_FILE_CONNECTED == dev->iamthif_cl.state) &&
+ (dev->iamthif_state == MEI_IAMTHIF_READING)) {
dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_iamthif_message.\n");
dev_dbg(&dev->pdev->dev, "mei_hdr->length =%d\n",
mei_hdr->length);
@@ -1167,7 +1158,7 @@ static int mei_irq_thread_read_handler(struct mei_io_list *cmpl_list,
} else {
dev_dbg(&dev->pdev->dev, "call mei_irq_thread_read_client_message.\n");
ret = mei_irq_thread_read_client_message(cmpl_list,
- dev, mei_hdr);
+ dev, mei_hdr);
if (ret)
goto end;
@@ -1188,7 +1179,6 @@ end:
return ret;
}
-
/**
* mei_irq_thread_write_handler - bottom half write routine after
* ISR to handle the write processing.
@@ -1220,15 +1210,15 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
list = &dev->write_waiting_list;
list_for_each_entry_safe(pos, next,
&list->mei_cb.cb_list, cb_list) {
- cl = (struct mei_cl *)pos->file_private;
+ cl = (struct mei_cl *) pos->file_private;
if (cl == NULL)
continue;
cl->status = 0;
list_del(&pos->cb_list);
if (MEI_WRITING == cl->writing_state &&
- (pos->major_file_operations == MEI_WRITE) &&
- (cl != &dev->iamthif_cl)) {
+ (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;
@@ -1274,12 +1264,14 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
dev->wd_pending = false;
if (dev->wd_timeout) {
- *slots -= (sizeof(struct mei_msg_hdr) +
- MEI_START_WD_DATA_SIZE + 3) / 4;
+ *slots -= DIV_ROUND_UP(
+ sizeof(struct mei_msg_hdr) +
+ MEI_START_WD_DATA_SIZE, sizeof(u32));
dev->wd_due_counter = 2;
} else {
- *slots -= (sizeof(struct mei_msg_hdr) +
- MEI_WD_PARAMS_SIZE + 3) / 4;
+ *slots -= DIV_ROUND_UP(
+ sizeof(struct mei_msg_hdr) +
+ MEI_WD_PARAMS_SIZE, sizeof(u32));
dev->wd_due_counter = 0;
}
@@ -1300,34 +1292,32 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
switch (pos->major_file_operations) {
case MEI_CLOSE:
/* send disconnect message */
- ret = _mei_irq_thread_close(dev, slots, pos, cl, cmpl_list);
+ ret = _mei_irq_thread_close(dev, slots, pos, cl,
+ cmpl_list);
if (ret)
return ret;
-
break;
case MEI_READ:
/* send flow control message */
- ret = _mei_irq_thread_read(dev, slots, pos, cl, cmpl_list);
+ ret = _mei_irq_thread_read(dev, slots, pos, cl,
+ cmpl_list);
if (ret)
return ret;
-
break;
case MEI_IOCTL:
/* connect message */
if (mei_other_client_is_connecting(dev, cl))
continue;
- ret = _mei_irq_thread_ioctl(dev, slots, pos, cl, cmpl_list);
+ ret = _mei_irq_thread_ioctl(dev, slots, pos, cl,
+ cmpl_list);
if (ret)
return ret;
-
break;
-
default:
BUG();
}
-
}
- /* complete write list CB */
+ /* 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) {
@@ -1339,14 +1329,13 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
if (!mei_flow_ctrl_creds(dev, cl)) {
dev_dbg(&dev->pdev->dev,
"No flow control"
- " credentials for client"
- " %d, not sending.\n",
- cl->host_client_id);
+ " credentials for client"
+ " %d, not sending.\n",
+ cl->host_client_id);
continue;
}
- ret = _mei_irq_thread_cmpl(dev, slots,
- pos,
- cl, cmpl_list);
+ ret = _mei_irq_thread_cmpl(dev, slots, pos, cl,
+ cmpl_list);
if (ret)
return ret;
@@ -1356,15 +1345,12 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
if (!mei_flow_ctrl_creds(dev, cl)) {
dev_dbg(&dev->pdev->dev,
"No flow control"
- " credentials for amthi"
- " client %d.\n",
- cl->host_client_id);
+ " credentials for amthi"
+ " client %d.\n",
+ cl->host_client_id);
continue;
}
- ret = _mei_irq_thread_cmpl_iamthif(dev,
- slots,
- pos,
- cl,
+ ret = _mei_irq_thread_cmpl_iamthif(dev, slots, pos, cl,
cmpl_list);
if (ret)
return ret;
@@ -1375,8 +1361,6 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
return 0;
}
-
-
/**
* mei_timer - timer function.
*
@@ -1390,13 +1374,12 @@ void mei_timer(struct work_struct *work)
struct mei_cl *cl_pos = NULL;
struct mei_cl *cl_next = NULL;
struct list_head *amthi_complete_list = NULL;
- struct mei_cl_cb *cb_pos = NULL;
- struct mei_cl_cb *cb_next = NULL;
+ struct mei_cl_cb *cb_pos = NULL;
+ struct mei_cl_cb *cb_next = NULL;
struct mei_device *dev = container_of(work,
struct mei_device, timer_work.work);
-
mutex_lock(&dev->device_lock);
if (dev->mei_state != MEI_ENABLED) {
if (dev->mei_state == MEI_INIT_CLIENTS) {
@@ -1410,7 +1393,7 @@ void mei_timer(struct work_struct *work)
}
goto out;
}
- /*** connect/disconnect timeouts ***/
+ /* connect/disconnect timeouts */
list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) {
if (cl_pos->timer_count) {
if (--cl_pos->timer_count == 0) {
@@ -1442,7 +1425,6 @@ void mei_timer(struct work_struct *work)
}
if (dev->iamthif_timer) {
-
timeout = dev->iamthif_timer +
msecs_to_jiffies(IAMTHIF_READ_TIMER);
@@ -1461,7 +1443,8 @@ void mei_timer(struct work_struct *work)
amthi_complete_list = &dev->amthi_read_complete_list.
mei_cb.cb_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, cb_list) {
cl_pos = cb_pos->file_object->private_data;
@@ -1486,8 +1469,8 @@ out:
}
/**
- * mei_interrupt_thread_handler - function called after ISR to handle the interrupt
- * processing.
+ * mei_interrupt_thread_handler - function called after ISR to handle the
+ * interrupt processing.
*
* @irq: The irq number
* @dev_id: pointer to the device structure
@@ -1503,8 +1486,7 @@ irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id)
struct mei_cl *cl;
s32 slots;
int rets;
- bool bus_message_received;
-
+ bool bus_message_received;
dev_dbg(&dev->pdev->dev, "function called after ISR to handle the interrupt processing.\n");
/* initialize our complete list */
@@ -1521,15 +1503,15 @@ irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id)
/* check if ME wants a reset */
if ((dev->me_hw_state & ME_RDY_HRA) == 0 &&
- dev->mei_state != MEI_RESETING &&
- dev->mei_state != MEI_INITIALIZING) {
+ dev->mei_state != MEI_RESETING &&
+ dev->mei_state != MEI_INITIALIZING) {
dev_dbg(&dev->pdev->dev, "FW not ready.\n");
mei_reset(dev, 1);
mutex_unlock(&dev->device_lock);
return IRQ_HANDLED;
}
- /* check if we need to start the dev */
+ /* check if we need to start the dev */
if ((dev->host_hw_state & H_RDY) == 0) {
if ((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA) {
dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
@@ -1581,7 +1563,6 @@ end:
if (list_empty(&complete_list.mei_cb.cb_list))
return IRQ_HANDLED;
-
list_for_each_entry_safe(cb_pos, cb_next,
&complete_list.mei_cb.cb_list, cb_list) {
cl = (struct mei_cl *)cb_pos->file_private;
diff --git a/drivers/staging/mei/mei_dev.h b/drivers/staging/mei/mei_dev.h
index 82bacfc..8ed54da 100644
--- a/drivers/staging/mei/mei_dev.h
+++ b/drivers/staging/mei/mei_dev.h
@@ -271,7 +271,8 @@ int mei_hw_init(struct mei_device *dev);
int mei_task_initialize_clients(void *data);
int mei_initialize_clients(struct mei_device *dev);
int mei_disconnect_host_client(struct mei_device *dev, struct mei_cl *cl);
-void mei_remove_client_from_file_list(struct mei_device *dev, u8 host_client_id);
+void mei_remove_client_from_file_list(struct mei_device *dev,
+ u8 host_client_id);
void mei_host_init_iamthif(struct mei_device *dev);
void mei_allocate_me_clients_storage(struct mei_device *dev);
diff --git a/drivers/staging/mei/mei_version.h b/drivers/staging/mei/mei_version.h
index 075bad8..70de574 100644
--- a/drivers/staging/mei/mei_version.h
+++ b/drivers/staging/mei/mei_version.h
@@ -23,9 +23,9 @@
#define QUICK_FIX_NUMBER 20
#define VER_BUILD 1
-#define MEI_DRV_VER1 __stringify(MAJOR_VERSION) "." __stringify(MINOR_VERSION)
-#define MEI_DRV_VER2 __stringify(QUICK_FIX_NUMBER) "." __stringify(VER_BUILD)
+#define MEI_DRV_VER1 (__stringify(MAJOR_VERSION) "." __stringify(MINOR_VERSION))
+#define MEI_DRV_VER2 (__stringify(QUICK_FIX_NUMBER) "." __stringify(VER_BUILD))
-#define MEI_DRIVER_VERSION MEI_DRV_VER1 "." MEI_DRV_VER2
+#define MEI_DRIVER_VERSION (MEI_DRV_VER1 "." MEI_DRV_VER2)
#endif
diff --git a/drivers/staging/mei/wd.c b/drivers/staging/mei/wd.c
index 8094941..e1b6b2e 100644
--- a/drivers/staging/mei/wd.c
+++ b/drivers/staging/mei/wd.c
@@ -75,7 +75,8 @@ bool mei_wd_host_init(struct mei_device *dev)
dev_dbg(&dev->pdev->dev, "check wd_cl\n");
if (MEI_FILE_CONNECTING == dev->wd_cl.state) {
if (!mei_connect(dev, &dev->wd_cl)) {
- dev_dbg(&dev->pdev->dev, "Failed to connect to WD client\n");
+ dev_dbg(&dev->pdev->dev,
+ "Failed to connect to WD client\n");
dev->wd_cl.state = MEI_FILE_DISCONNECTED;
dev->wd_cl.host_client_id = 0;
ret = false;
@@ -210,13 +211,15 @@ static int mei_wd_ops_start(struct watchdog_device *wd_dev)
mutex_lock(&dev->device_lock);
if (dev->mei_state != MEI_ENABLED) {
- dev_dbg(&dev->pdev->dev, "mei_state != MEI_ENABLED mei_state= %d\n",
- dev->mei_state);
+ dev_dbg(&dev->pdev->dev,
+ "mei_state != MEI_ENABLED mei_state= %d\n",
+ dev->mei_state);
goto end_unlock;
}
if (dev->wd_cl.state != MEI_FILE_CONNECTED) {
- dev_dbg(&dev->pdev->dev, "MEI Driver is not connected to Watchdog Client\n");
+ dev_dbg(&dev->pdev->dev,
+ "MEI Driver is not connected to Watchdog Client\n");
goto end_unlock;
}
@@ -288,7 +291,8 @@ static int mei_wd_ops_ping(struct watchdog_device *wd_dev)
}
if (mei_flow_ctrl_reduce(dev, &dev->wd_cl)) {
- dev_dbg(&dev->pdev->dev, "mei_flow_ctrl_reduce() failed.\n");
+ dev_dbg(&dev->pdev->dev,
+ "mei_flow_ctrl_reduce() failed.\n");
ret = -EIO;
goto end;
}
@@ -310,7 +314,8 @@ end:
*
* returns 0 if success, negative errno code for failure
*/
-static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev, unsigned int timeout)
+static int mei_wd_ops_set_timeout(struct watchdog_device *wd_dev,
+ unsigned int timeout)
{
struct mei_device *dev;
dev = pci_get_drvdata(mei_device);
@@ -363,10 +368,12 @@ void mei_watchdog_register(struct mei_device *dev)
dev->wd_due_counter = !!dev->wd_timeout;
if (watchdog_register_device(&amt_wd_dev)) {
- dev_err(&dev->pdev->dev, "unable to register watchdog device.\n");
+ dev_err(&dev->pdev->dev,
+ "unable to register watchdog device.\n");
dev->wd_interface_reg = false;
} else {
- dev_dbg(&dev->pdev->dev, "successfully register watchdog interface.\n");
+ dev_dbg(&dev->pdev->dev,
+ "successfully register watchdog interface.\n");
dev->wd_interface_reg = true;
}
}
--
1.7.9.2
^ permalink raw reply related [flat|nested] 12+ messages in thread* [PATCH 6/9] mei: reduce indentation with early returns
2012-02-24 1:38 Devin J. Pohly
` (4 preceding siblings ...)
2012-02-24 1:38 ` [PATCH 5/9] mei: remove indentation where else follows return Devin J. Pohly
@ 2012-02-24 1:38 ` Devin J. Pohly
2012-02-24 1:38 ` [PATCH 7/9] mei: reduce indentation by combining if blocks Devin J. Pohly
` (2 subsequent siblings)
8 siblings, 0 replies; 12+ messages in thread
From: Devin J. Pohly @ 2012-02-24 1:38 UTC (permalink / raw)
To: gregkh; +Cc: linux-kernel, Devin J. Pohly
From: "Devin J. Pohly" <djpohly@gmail.com>
Rather than check an error condition in the last part of an if-else set,
check it up front, return, and then don't bother with the "else" part.
Signed-off-by: Devin J. Pohly <djpohly@gmail.com>
---
drivers/staging/mei/interrupt.c | 352 +++++++++++++++++++--------------------
1 file changed, 170 insertions(+), 182 deletions(-)
diff --git a/drivers/staging/mei/interrupt.c b/drivers/staging/mei/interrupt.c
index ade5574..541d018 100644
--- a/drivers/staging/mei/interrupt.c
+++ b/drivers/staging/mei/interrupt.c
@@ -261,26 +261,26 @@ out:
*/
static int _mei_irq_thread_iamthif_read(struct mei_device *dev, s32 *slots)
{
- if (((*slots) * sizeof(u32)) >= (sizeof(struct mei_msg_hdr)
- + sizeof(struct hbm_flow_control))) {
- *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_flow_control), sizeof(u32));
- if (!mei_send_flow_control(dev, &dev->iamthif_cl)) {
- dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n");
- } else {
- dev_dbg(&dev->pdev->dev, "iamthif flow control success\n");
- dev->iamthif_state = MEI_IAMTHIF_READING;
- dev->iamthif_flow_control_pending = false;
- dev->iamthif_msg_buf_index = 0;
- dev->iamthif_msg_buf_size = 0;
- dev->iamthif_stall_timer = IAMTHIF_STALL_TIMER;
- dev->mei_host_buffer_is_empty =
- mei_host_buffer_is_empty(dev);
- }
- return 0;
- } else {
+ if (*slots * sizeof(u32) < (sizeof(struct mei_msg_hdr)
+ + sizeof(struct hbm_flow_control)))
return -EMSGSIZE;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_flow_control),
+ sizeof(u32));
+ if (!mei_send_flow_control(dev, &dev->iamthif_cl)) {
+ dev_dbg(&dev->pdev->dev, "iamthif flow control failed\n");
+ return 0;
}
+
+ dev_dbg(&dev->pdev->dev, "iamthif flow control success\n");
+ dev->iamthif_state = MEI_IAMTHIF_READING;
+ dev->iamthif_flow_control_pending = false;
+ dev->iamthif_msg_buf_index = 0;
+ dev->iamthif_msg_buf_size = 0;
+ dev->iamthif_stall_timer = IAMTHIF_STALL_TIMER;
+ dev->mei_host_buffer_is_empty =
+ mei_host_buffer_is_empty(dev);
+ return 0;
}
/**
@@ -299,31 +299,27 @@ static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
{
- if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_disconnect_request))) {
- *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_client_disconnect_request)))
+ return -EBADMSG;
+
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_client_disconnect_request),
sizeof(u32));
- if (!mei_disconnect(dev, cl)) {
- cl->status = 0;
- cb_pos->information = 0;
- list_move_tail(&cb_pos->cb_list,
- &cmpl_list->mei_cb.cb_list);
- return -EMSGSIZE;
- } else {
- cl->state = MEI_FILE_DISCONNECTING;
- cl->status = 0;
- cb_pos->information = 0;
- list_move_tail(&cb_pos->cb_list,
- &dev->ctrl_rd_list.mei_cb.cb_list);
- cl->timer_count = MEI_CONNECT_TIMEOUT;
- }
- } else {
- /* return the cancel routine */
- return -EBADMSG;
+ if (!mei_disconnect(dev, cl)) {
+ cl->status = 0;
+ cb_pos->information = 0;
+ list_move_tail(&cb_pos->cb_list, &cmpl_list->mei_cb.cb_list);
+ return -EMSGSIZE;
}
+ cl->state = MEI_FILE_DISCONNECTING;
+ cl->status = 0;
+ cb_pos->information = 0;
+ list_move_tail(&cb_pos->cb_list, &dev->ctrl_rd_list.mei_cb.cb_list);
+ cl->timer_count = MEI_CONNECT_TIMEOUT;
+
return 0;
}
@@ -338,22 +334,20 @@ static int _mei_irq_thread_close(struct mei_device *dev, s32 *slots,
static bool is_treat_specially_client(struct mei_cl *cl,
struct hbm_client_connect_response *rs)
{
+ if (cl->host_client_id != rs->host_addr ||
+ cl->me_client_id != rs->me_addr)
+ return false;
- if (cl->host_client_id == rs->host_addr &&
- cl->me_client_id == rs->me_addr) {
- if (!rs->status) {
- cl->state = MEI_FILE_CONNECTED;
- cl->status = 0;
-
- } else {
- cl->state = MEI_FILE_DISCONNECTED;
- cl->status = -ENODEV;
- }
- cl->timer_count = 0;
-
- return true;
+ if (!rs->status) {
+ cl->state = MEI_FILE_CONNECTED;
+ cl->status = 0;
+ } else {
+ cl->state = MEI_FILE_DISCONNECTED;
+ cl->status = -ENODEV;
}
- return false;
+ cl->timer_count = 0;
+
+ return true;
}
/**
@@ -486,15 +480,14 @@ static void add_single_flow_creds(struct mei_device *dev,
for (i = 0; i < dev->me_clients_num; i++) {
client = &dev->me_clients[i];
if (client && flow->me_addr == client->client_id) {
- if (client->props.single_recv_buf) {
- client->mei_flow_ctrl_creds++;
- dev_dbg(&dev->pdev->dev, "recv flow ctrl msg ME %d (single).\n",
- flow->me_addr);
- dev_dbg(&dev->pdev->dev, "flow control credentials =%d.\n",
- client->mei_flow_ctrl_creds);
- } else {
- BUG(); /* error in flow control */
- }
+ /* bug on error in flow control */
+ BUG_ON(!client->props.single_recv_buf);
+
+ client->mei_flow_ctrl_creds++;
+ dev_dbg(&dev->pdev->dev, "recv flow ctrl msg ME %d (single).\n",
+ flow->me_addr);
+ dev_dbg(&dev->pdev->dev, "flow control credentials =%d.\n",
+ client->mei_flow_ctrl_creds);
}
}
}
@@ -569,38 +562,37 @@ static void mei_client_disconnect_request(struct mei_device *dev,
struct mei_cl *cl_next = NULL;
list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) {
- if (same_disconn_addr(cl_pos, disconnect_req)) {
- dev_dbg(&dev->pdev->dev, "disconnect request host client %d ME client %d.\n",
- disconnect_req->host_addr,
- disconnect_req->me_addr);
- cl_pos->state = MEI_FILE_DISCONNECTED;
- cl_pos->timer_count = 0;
- if (cl_pos == &dev->wd_cl) {
- dev->wd_due_counter = 0;
- dev->wd_pending = false;
- } else if (cl_pos == &dev->iamthif_cl)
- dev->iamthif_timer = 0;
-
- /* prepare disconnect response */
- mei_hdr =
- (struct mei_msg_hdr *) &dev->ext_msg_buf[0];
- mei_hdr->host_addr = 0;
- mei_hdr->me_addr = 0;
- mei_hdr->length = sizeof(*disconnect_res);
- mei_hdr->msg_complete = 1;
- mei_hdr->reserved = 0;
+ if (!same_disconn_addr(cl_pos, disconnect_req))
+ continue;
- disconnect_res =
- (struct hbm_client_connect_response *)
- &dev->ext_msg_buf[1];
- disconnect_res->host_addr = cl_pos->host_client_id;
- disconnect_res->me_addr = cl_pos->me_client_id;
- *(u8 *) (&disconnect_res->cmd) =
- CLIENT_DISCONNECT_RES_CMD;
- disconnect_res->status = 0;
- dev->extra_write_index = 2;
- break;
+ dev_dbg(&dev->pdev->dev, "disconnect request host client %d ME client %d.\n",
+ disconnect_req->host_addr,
+ disconnect_req->me_addr);
+ cl_pos->state = MEI_FILE_DISCONNECTED;
+ cl_pos->timer_count = 0;
+ if (cl_pos == &dev->wd_cl) {
+ dev->wd_due_counter = 0;
+ dev->wd_pending = false;
+ } else if (cl_pos == &dev->iamthif_cl) {
+ dev->iamthif_timer = 0;
}
+
+ /* prepare disconnect response */
+ mei_hdr = (struct mei_msg_hdr *) &dev->ext_msg_buf[0];
+ mei_hdr->host_addr = 0;
+ mei_hdr->me_addr = 0;
+ mei_hdr->length = sizeof(*disconnect_res);
+ mei_hdr->msg_complete = 1;
+ mei_hdr->reserved = 0;
+
+ disconnect_res = (struct hbm_client_connect_response *)
+ &dev->ext_msg_buf[1];
+ disconnect_res->host_addr = cl_pos->host_client_id;
+ disconnect_res->me_addr = cl_pos->me_client_id;
+ *(u8 *) (&disconnect_res->cmd) = CLIENT_DISCONNECT_RES_CMD;
+ disconnect_res->status = 0;
+ dev->extra_write_index = 2;
+ break;
}
}
@@ -704,82 +696,82 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
return;
}
if (dev->me_clients[dev->me_client_presentation_num]
- .client_id == props_res->address) {
-
- dev->me_clients[dev->me_client_presentation_num].props
- = props_res->client_properties;
+ .client_id != props_res->address) {
+ dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message for wrong client ID\n");
+ mei_reset(dev, 1);
+ return;
+ }
- if (dev->mei_state == MEI_INIT_CLIENTS &&
- dev->init_clients_state ==
- MEI_CLIENT_PROPERTIES_MESSAGE) {
- dev->me_client_index++;
- dev->me_client_presentation_num++;
-
- /* Send Client Properties request */
- res = mei_host_client_properties(dev);
- if (res < 0) {
- dev_dbg(&dev->pdev->dev, "mei_host_client_properties() failed");
- return;
- } else if (!res) {
- /*
- * No more clients to send to.
- * Clear Map for indicating now ME
- * clients with associated host client
- */
- bitmap_zero(dev->host_clients_map,
- MEI_CLIENTS_MAX);
- dev->open_handle_count = 0;
-
- /*
- * Reserving the first three client IDs
- * Client Id 0 - Reserved for MEI Bus
- * Message communications
- * Client Id 1 - Reserved for Watchdog
- * Client ID 2 - Reserved for AMTHI
- */
- bitmap_set(dev->host_clients_map, 0, 3);
- dev->mei_state = MEI_ENABLED;
-
- /* if wd initialization fails,
- * initialize the AMTHI client,
- * otherwise the AMTHI client will be
- * initialized after the WD client
- * connect response is received
- */
- if (mei_wd_host_init(dev))
- mei_host_init_iamthif(dev);
- }
+ dev->me_clients[dev->me_client_presentation_num].props
+ = props_res->client_properties;
- } else {
- dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message");
- mei_reset(dev, 1);
- return;
- }
- } else {
- dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message for wrong client ID\n");
+ if (dev->mei_state != MEI_INIT_CLIENTS ||
+ dev->init_clients_state !=
+ MEI_CLIENT_PROPERTIES_MESSAGE) {
+ dev_dbg(&dev->pdev->dev, "reset due to received host client properties response bus message");
mei_reset(dev, 1);
return;
}
+
+ dev->me_client_index++;
+ dev->me_client_presentation_num++;
+
+ /* Send Client Properties request */
+ res = mei_host_client_properties(dev);
+ if (res < 0) {
+ dev_dbg(&dev->pdev->dev, "mei_host_client_properties() failed");
+ return;
+ }
+ if (res)
+ break;
+
+ /*
+ * No more clients to send to.
+ * Clear Map for indicating now ME
+ * clients with associated host client
+ */
+ bitmap_zero(dev->host_clients_map,
+ MEI_CLIENTS_MAX);
+ dev->open_handle_count = 0;
+
+ /*
+ * Reserving the first three client IDs
+ * Client Id 0 - Reserved for MEI Bus
+ * Message communications
+ * Client Id 1 - Reserved for Watchdog
+ * Client ID 2 - Reserved for AMTHI
+ */
+ bitmap_set(dev->host_clients_map, 0, 3);
+ dev->mei_state = MEI_ENABLED;
+
+ /* if wd initialization fails,
+ * initialize the AMTHI client,
+ * otherwise the AMTHI client will be
+ * initialized after the WD client
+ * connect response is received
+ */
+ if (mei_wd_host_init(dev))
+ mei_host_init_iamthif(dev);
break;
case HOST_ENUM_RES_CMD:
enum_res = (struct hbm_host_enum_response *) mei_msg;
memcpy(dev->me_clients_map, enum_res->valid_addresses, 32);
- if (dev->mei_state == MEI_INIT_CLIENTS &&
- dev->init_clients_state ==
- MEI_ENUM_CLIENTS_MESSAGE) {
- dev->init_clients_timer = 0;
- dev->me_client_presentation_num = 0;
- dev->me_client_index = 0;
- mei_allocate_me_clients_storage(dev);
- dev->init_clients_state =
- MEI_CLIENT_PROPERTIES_MESSAGE;
- mei_host_client_properties(dev);
- } else {
+ if (dev->mei_state != MEI_INIT_CLIENTS ||
+ dev->init_clients_state !=
+ MEI_ENUM_CLIENTS_MESSAGE) {
dev_dbg(&dev->pdev->dev, "reset due to received host enumeration clients response bus message.\n");
mei_reset(dev, 1);
return;
}
+
+ dev->init_clients_timer = 0;
+ dev->me_client_presentation_num = 0;
+ dev->me_client_index = 0;
+ mei_allocate_me_clients_storage(dev);
+ dev->init_clients_state =
+ MEI_CLIENT_PROPERTIES_MESSAGE;
+ mei_host_client_properties(dev);
break;
case HOST_STOP_RES_CMD:
@@ -835,26 +827,24 @@ static int _mei_irq_thread_read(struct mei_device *dev, s32 *slots,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
{
- if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
+ if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_flow_control))) {
- *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_flow_control), sizeof(u32));
- if (!mei_send_flow_control(dev, cl)) {
- cl->status = -ENODEV;
- cb_pos->information = 0;
- list_move_tail(&cb_pos->cb_list,
- &cmpl_list->mei_cb.cb_list);
- return -ENODEV;
- } else {
- list_move_tail(&cb_pos->cb_list,
- &dev->read_list.mei_cb.cb_list);
- }
- } else {
/* return the cancel routine */
list_del(&cb_pos->cb_list);
return -EBADMSG;
}
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_flow_control), sizeof(u32));
+ if (!mei_send_flow_control(dev, cl)) {
+ cl->status = -ENODEV;
+ cb_pos->information = 0;
+ list_move_tail(&cb_pos->cb_list,
+ &cmpl_list->mei_cb.cb_list);
+ return -ENODEV;
+ }
+ list_move_tail(&cb_pos->cb_list,
+ &dev->read_list.mei_cb.cb_list);
return 0;
}
@@ -874,26 +864,24 @@ static int _mei_irq_thread_ioctl(struct mei_device *dev, s32 *slots,
struct mei_cl *cl,
struct mei_io_list *cmpl_list)
{
- if ((*slots * sizeof(u32)) >= (sizeof(struct mei_msg_hdr) +
+ if ((*slots * sizeof(u32)) < (sizeof(struct mei_msg_hdr) +
sizeof(struct hbm_client_connect_request))) {
- cl->state = MEI_FILE_CONNECTING;
- *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
- sizeof(struct hbm_client_connect_request), sizeof(u32));
- if (!mei_connect(dev, cl)) {
- cl->status = -ENODEV;
- cb_pos->information = 0;
- list_del(&cb_pos->cb_list);
- return -ENODEV;
- } else {
- list_move_tail(&cb_pos->cb_list,
- &dev->ctrl_rd_list.mei_cb.cb_list);
- cl->timer_count = MEI_CONNECT_TIMEOUT;
- }
- } else {
/* return the cancel routine */
list_del(&cb_pos->cb_list);
return -EBADMSG;
}
+ cl->state = MEI_FILE_CONNECTING;
+ *slots -= DIV_ROUND_UP(sizeof(struct mei_msg_hdr) +
+ sizeof(struct hbm_client_connect_request), sizeof(u32));
+ if (!mei_connect(dev, cl)) {
+ cl->status = -ENODEV;
+ cb_pos->information = 0;
+ list_del(&cb_pos->cb_list);
+ return -ENODEV;
+ }
+ list_move_tail(&cb_pos->cb_list,
+ &dev->ctrl_rd_list.mei_cb.cb_list);
+ cl->timer_count = MEI_CONNECT_TIMEOUT;
return 0;
}
--
1.7.9.2
^ permalink raw reply related [flat|nested] 12+ messages in thread