mei: name space for mei device state

1. add MEI_DEV_ prefix for mei device state enums
2. rename mei_state to dev_state
3. add constant to string translation for debug purposes

Signed-off-by: Tomas Winkler <tomas.winkler@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

6 files changed, 77 insertions, 55 deletions

diff --git a/drivers/misc/mei/init.c b/drivers/misc/mei/init.c
index 58b3bf47c8eb..cd6a7f1ff916 100644
--- a/drivers/misc/mei/init.c
+++ b/drivers/misc/mei/init.c
@@ -24,6 +24,25 @@
 #include "interface.h"
 #include <linux/mei.h>
 
+const char *mei_dev_state_str(int state)
+{
+#define MEI_DEV_STATE(state) case MEI_DEV_##state: return #state
+        switch (state) {
+        MEI_DEV_STATE(INITIALIZING);
+        MEI_DEV_STATE(INIT_CLIENTS);
+        MEI_DEV_STATE(ENABLED);
+        MEI_DEV_STATE(RESETING);
+        MEI_DEV_STATE(DISABLED);
+        MEI_DEV_STATE(RECOVERING_FROM_RESET);
+        MEI_DEV_STATE(POWER_DOWN);
+        MEI_DEV_STATE(POWER_UP);
+        default:
+                return "unkown";
+        }
+#undef MEI_DEV_STATE
+}
+
+
 const uuid_le mei_amthi_guid  = UUID_LE(0x12f80028, 0xb4b7, 0x4b2d, 0xac,
                                                 0xa8, 0x46, 0xe0, 0xff, 0x65,
                                                 0x81, 0x4c);
@@ -123,7 +142,7 @@ struct mei_device *mei_device_init(struct pci_dev *pdev)
         mutex_init(&dev->device_lock);
         init_waitqueue_head(&dev->wait_recvd_msg);
         init_waitqueue_head(&dev->wait_stop_wd);
-        dev->mei_state = MEI_INITIALIZING;
+        dev->dev_state = MEI_DEV_INITIALIZING;
         dev->iamthif_state = MEI_IAMTHIF_IDLE;
         dev->wd_interface_reg = false;
 
@@ -182,7 +201,7 @@ int mei_hw_init(struct mei_device *dev)
         }
 
         if (err <= 0 && !dev->recvd_msg) {
-                dev->mei_state = MEI_DISABLED;
+                dev->dev_state = MEI_DEV_DISABLED;
                 dev_dbg(&dev->pdev->dev,
                         "wait_event_interruptible_timeout failed"
                         "on wait for ME to turn on ME_RDY.\n");
@@ -192,7 +211,7 @@ int mei_hw_init(struct mei_device *dev)
 
         if (!(((dev->host_hw_state & H_RDY) == H_RDY) &&
               ((dev->me_hw_state & ME_RDY_HRA) == ME_RDY_HRA))) {
-                dev->mei_state = MEI_DISABLED;
+                dev->dev_state = MEI_DEV_DISABLED;
                 dev_dbg(&dev->pdev->dev,
                         "host_hw_state = 0x%08x, me_hw_state = 0x%08x.\n",
                         dev->host_hw_state, dev->me_hw_state);
@@ -258,15 +277,15 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled)
         struct mei_cl_cb *cb_next = NULL;
         bool unexpected;
 
-        if (dev->mei_state == MEI_RECOVERING_FROM_RESET) {
+        if (dev->dev_state == MEI_DEV_RECOVERING_FROM_RESET) {
                 dev->need_reset = true;
                 return;
         }
 
-        unexpected = (dev->mei_state != MEI_INITIALIZING &&
-                        dev->mei_state != MEI_DISABLED &&
-                        dev->mei_state != MEI_POWER_DOWN &&
-                        dev->mei_state != MEI_POWER_UP);
+        unexpected = (dev->dev_state != MEI_DEV_INITIALIZING &&
+                        dev->dev_state != MEI_DEV_DISABLED &&
+                        dev->dev_state != MEI_DEV_POWER_DOWN &&
+                        dev->dev_state != MEI_DEV_POWER_UP);
 
         dev->host_hw_state = mei_hcsr_read(dev);
 
@@ -285,10 +304,10 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled)
 
         dev->need_reset = false;
 
-        if (dev->mei_state != MEI_INITIALIZING) {
-                if (dev->mei_state != MEI_DISABLED &&
-                    dev->mei_state != MEI_POWER_DOWN)
-                        dev->mei_state = MEI_RESETING;
+        if (dev->dev_state != MEI_DEV_INITIALIZING) {
+                if (dev->dev_state != MEI_DEV_DISABLED &&
+                    dev->dev_state != MEI_DEV_POWER_DOWN)
+                        dev->dev_state = MEI_DEV_RESETING;
 
                 list_for_each_entry_safe(cl_pos,
                                 cl_next, &dev->file_list, link) {
@@ -322,7 +341,8 @@ void mei_reset(struct mei_device *dev, int interrupts_enabled)
             dev->host_hw_state, dev->me_hw_state);
 
         if (unexpected)
-                dev_warn(&dev->pdev->dev, "unexpected reset.\n");
+                dev_warn(&dev->pdev->dev, "unexpected reset: dev_state = %s\n",
+                         mei_dev_state_str(dev->dev_state));
 
         /* Wake up all readings so they can be interrupted */
         list_for_each_entry_safe(cl_pos, cl_next, &dev->file_list, link) {
@@ -371,7 +391,7 @@ void mei_host_start_message(struct mei_device *dev)
         if (mei_write_message(dev, mei_hdr, (unsigned char *)host_start_req,
                                        mei_hdr->length)) {
                 dev_dbg(&dev->pdev->dev, "write send version message to FW fail.\n");
-                dev->mei_state = MEI_RESETING;
+                dev->dev_state = MEI_DEV_RESETING;
                 mei_reset(dev, 1);
         }
         dev->init_clients_state = MEI_START_MESSAGE;
@@ -403,7 +423,7 @@ void mei_host_enum_clients_message(struct mei_device *dev)
         host_enum_req->hbm_cmd = HOST_ENUM_REQ_CMD;
         if (mei_write_message(dev, mei_hdr, (unsigned char *)host_enum_req,
                                 mei_hdr->length)) {
-                dev->mei_state = MEI_RESETING;
+                dev->dev_state = MEI_DEV_RESETING;
                 dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n");
                 mei_reset(dev, 1);
         }
@@ -444,7 +464,7 @@ void mei_allocate_me_clients_storage(struct mei_device *dev)
                         sizeof(struct mei_me_client), GFP_KERNEL);
         if (!clients) {
                 dev_dbg(&dev->pdev->dev, "memory allocation for ME clients failed.\n");
-                dev->mei_state = MEI_RESETING;
+                dev->dev_state = MEI_DEV_RESETING;
                 mei_reset(dev, 1);
                 return ;
         }
@@ -490,7 +510,7 @@ int mei_host_client_properties(struct mei_device *dev)
                 if (mei_write_message(dev, mei_header,
                                 (unsigned char *)host_cli_req,
                                 mei_header->length)) {
-                        dev->mei_state = MEI_RESETING;
+                        dev->dev_state = MEI_DEV_RESETING;
                         dev_dbg(&dev->pdev->dev, "write send enumeration request message to FW fail.\n");
                         mei_reset(dev, 1);
                         return -EIO;
diff --git a/drivers/misc/mei/interrupt.c b/drivers/misc/mei/interrupt.c
index c6ffbbe5a6c0..94370d26ed45 100644
--- a/drivers/misc/mei/interrupt.c
+++ b/drivers/misc/mei/interrupt.c
@@ -633,7 +633,7 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
                 if (version_res->host_version_supported) {
                         dev->version.major_version = HBM_MAJOR_VERSION;
                         dev->version.minor_version = HBM_MINOR_VERSION;
-                        if (dev->mei_state == MEI_INIT_CLIENTS &&
+                        if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
                             dev->init_clients_state == MEI_START_MESSAGE) {
                                 dev->init_clients_timer = 0;
                                 mei_host_enum_clients_message(dev);
@@ -707,7 +707,7 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
                         dev->me_clients[dev->me_client_presentation_num].props
                                                 = props_res->client_properties;
 
-                        if (dev->mei_state == MEI_INIT_CLIENTS &&
+                        if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
                             dev->init_clients_state ==
                                         MEI_CLIENT_PROPERTIES_MESSAGE) {
                                 dev->me_client_index++;
@@ -734,7 +734,7 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
                                          * Client ID 2 - Reserved for AMTHI
                                          */
                                         bitmap_set(dev->host_clients_map, 0, 3);
-                                        dev->mei_state = MEI_ENABLED;
+                                        dev->dev_state = MEI_DEV_ENABLED;
 
                                         /* if wd initialization fails, initialization the AMTHI client,
                                          * otherwise the AMTHI client will be initialized after the WD client connect response
@@ -759,7 +759,7 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
         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 &&
+                if (dev->dev_state == MEI_DEV_INIT_CLIENTS &&
                     dev->init_clients_state == MEI_ENUM_CLIENTS_MESSAGE) {
                                 dev->init_clients_timer = 0;
                                 dev->me_client_presentation_num = 0;
@@ -776,7 +776,7 @@ static void mei_irq_thread_read_bus_message(struct mei_device *dev,
                 break;
 
         case HOST_STOP_RES_CMD:
-                dev->mei_state = MEI_DISABLED;
+                dev->dev_state = MEI_DEV_DISABLED;
                 dev_dbg(&dev->pdev->dev, "resetting because of FW stop response.\n");
                 mei_reset(dev, 1);
                 break;
@@ -1240,7 +1240,7 @@ static int mei_irq_thread_write_handler(struct mei_io_list *cmpl_list,
                 *slots -= dev->extra_write_index;
                 dev->extra_write_index = 0;
         }
-        if (dev->mei_state == MEI_ENABLED) {
+        if (dev->dev_state == MEI_DEV_ENABLED) {
                 if (dev->wd_pending &&
                     mei_flow_ctrl_creds(dev, &dev->wd_cl) > 0) {
                         if (mei_wd_send(dev))
@@ -1361,8 +1361,8 @@ void mei_timer(struct work_struct *work)
 
 
         mutex_lock(&dev->device_lock);
-        if (dev->mei_state != MEI_ENABLED) {
-                if (dev->mei_state == MEI_INIT_CLIENTS) {
+        if (dev->dev_state != MEI_DEV_ENABLED) {
+                if (dev->dev_state == MEI_DEV_INIT_CLIENTS) {
                         if (dev->init_clients_timer) {
                                 if (--dev->init_clients_timer == 0) {
                                         dev_dbg(&dev->pdev->dev, "IMEI reset due to init clients timeout ,init clients state = %d.\n",
@@ -1484,8 +1484,8 @@ 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->dev_state != MEI_DEV_RESETING &&
+            dev->dev_state != MEI_DEV_INITIALIZING) {
                 dev_dbg(&dev->pdev->dev, "FW not ready.\n");
                 mei_reset(dev, 1);
                 mutex_unlock(&dev->device_lock);
@@ -1498,7 +1498,7 @@ irqreturn_t mei_interrupt_thread_handler(int irq, void *dev_id)
                         dev_dbg(&dev->pdev->dev, "we need to start the dev.\n");
                         dev->host_hw_state |= (H_IE | H_IG | H_RDY);
                         mei_hcsr_set(dev);
-                        dev->mei_state = MEI_INIT_CLIENTS;
+                        dev->dev_state = MEI_DEV_INIT_CLIENTS;
                         dev_dbg(&dev->pdev->dev, "link is established start sending messages.\n");
                         /* link is established
                          * start sending messages.
diff --git a/drivers/misc/mei/iorw.c b/drivers/misc/mei/iorw.c
index 9187d852ef9c..fcba98eb892e 100644
--- a/drivers/misc/mei/iorw.c
+++ b/drivers/misc/mei/iorw.c
@@ -108,7 +108,7 @@ int mei_ioctl_connect_client(struct file *file,
 
         cb->major_file_operations = MEI_IOCTL;
 
-        if (dev->mei_state != MEI_ENABLED) {
+        if (dev->dev_state != MEI_DEV_ENABLED) {
                 rets = -ENODEV;
                 goto end;
         }
@@ -402,7 +402,7 @@ int mei_start_read(struct mei_device *dev, struct mei_cl *cl)
         if (cl->state != MEI_FILE_CONNECTED)
                 return -ENODEV;
 
-        if (dev->mei_state != MEI_ENABLED)
+        if (dev->dev_state != MEI_DEV_ENABLED)
                 return -ENODEV;
 
         dev_dbg(&dev->pdev->dev, "check if read is pending.\n");
diff --git a/drivers/misc/mei/main.c b/drivers/misc/mei/main.c
index dea65c2c9203..5c557dd129d6 100644
--- a/drivers/misc/mei/main.c
+++ b/drivers/misc/mei/main.c
@@ -232,9 +232,9 @@ static int mei_open(struct inode *inode, struct file *file)
                 goto out_unlock;
 
         err = -ENODEV;
-        if (dev->mei_state != MEI_ENABLED) {
-                dev_dbg(&dev->pdev->dev, "mei_state != MEI_ENABLED  mei_state= %d\n",
-                    dev->mei_state);
+        if (dev->dev_state != MEI_DEV_ENABLED) {
+                dev_dbg(&dev->pdev->dev, "dev_state != MEI_ENABLED  dev_state = %s\n",
+                    mei_dev_state_str(dev->dev_state));
                 goto out_unlock;
         }
         err = -EMFILE;
@@ -384,7 +384,7 @@ static ssize_t mei_read(struct file *file, char __user *ubuf,
         dev = cl->dev;
 
         mutex_lock(&dev->device_lock);
-        if (dev->mei_state != MEI_ENABLED) {
+        if (dev->dev_state != MEI_DEV_ENABLED) {
                 rets = -ENODEV;
                 goto out;
         }
@@ -538,7 +538,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
 
         mutex_lock(&dev->device_lock);
 
-        if (dev->mei_state != MEI_ENABLED) {
+        if (dev->dev_state != MEI_DEV_ENABLED) {
                 mutex_unlock(&dev->device_lock);
                 return -ENODEV;
         }
@@ -613,7 +613,7 @@ static ssize_t mei_write(struct file *file, const char __user *ubuf,
                         rets = -ENOMEM;
                         goto unlock_dev;
                 }
-                if (dev->mei_state != MEI_ENABLED) {
+                if (dev->dev_state != MEI_DEV_ENABLED) {
                         rets = -ENODEV;
                         goto unlock_dev;
                 }
@@ -769,7 +769,7 @@ static long mei_ioctl(struct file *file, unsigned int cmd, unsigned long data)
         dev_dbg(&dev->pdev->dev, "IOCTL cmd = 0x%x", cmd);
 
         mutex_lock(&dev->device_lock);
-        if (dev->mei_state != MEI_ENABLED) {
+        if (dev->dev_state != MEI_DEV_ENABLED) {
                 rets = -ENODEV;
                 goto out;
         }
@@ -848,7 +848,7 @@ static unsigned int mei_poll(struct file *file, poll_table *wait)
 
         mutex_lock(&dev->device_lock);
 
-        if (dev->mei_state != MEI_ENABLED)
+        if (dev->dev_state != MEI_DEV_ENABLED)
                 goto out;
 
 
@@ -1118,9 +1118,9 @@ static int mei_pci_suspend(struct device *device)
         /* Stop watchdog if exists */
         err = mei_wd_stop(dev, true);
         /* Set new mei state */
-        if (dev->mei_state == MEI_ENABLED ||
-            dev->mei_state == MEI_RECOVERING_FROM_RESET) {
-                dev->mei_state = MEI_POWER_DOWN;
+        if (dev->dev_state == MEI_DEV_ENABLED ||
+            dev->dev_state == MEI_DEV_RECOVERING_FROM_RESET) {
+                dev->dev_state = MEI_DEV_POWER_DOWN;
                 mei_reset(dev, 0);
         }
         mutex_unlock(&dev->device_lock);
@@ -1162,7 +1162,7 @@ static int mei_pci_resume(struct device *device)
         }
 
         mutex_lock(&dev->device_lock);
-        dev->mei_state = MEI_POWER_UP;
+        dev->dev_state = MEI_DEV_POWER_UP;
         mei_reset(dev, 1);
         mutex_unlock(&dev->device_lock);
 
diff --git a/drivers/misc/mei/mei_dev.h b/drivers/misc/mei/mei_dev.h
index 1ff1fc678fb3..35d0538a5974 100644
--- a/drivers/misc/mei/mei_dev.h
+++ b/drivers/misc/mei/mei_dev.h
@@ -78,17 +78,19 @@ enum file_state {
 };
 
 /* MEI device states */
-enum mei_states {
-        MEI_INITIALIZING = 0,
-        MEI_INIT_CLIENTS,
-        MEI_ENABLED,
-        MEI_RESETING,
-        MEI_DISABLED,
-        MEI_RECOVERING_FROM_RESET,
-        MEI_POWER_DOWN,
-        MEI_POWER_UP
+enum mei_dev_state {
+        MEI_DEV_INITIALIZING = 0,
+        MEI_DEV_INIT_CLIENTS,
+        MEI_DEV_ENABLED,
+        MEI_DEV_RESETING,
+        MEI_DEV_DISABLED,
+        MEI_DEV_RECOVERING_FROM_RESET,
+        MEI_DEV_POWER_DOWN,
+        MEI_DEV_POWER_UP
 };
 
+const char *mei_dev_state_str(int state);
+
 /* init clients states*/
 enum mei_init_clients_states {
         MEI_START_MESSAGE = 0,
@@ -218,7 +220,7 @@ struct mei_device {
         /*
          * mei device  states
          */
-        enum mei_states mei_state;
+        enum mei_dev_state dev_state;
         enum mei_init_clients_states init_clients_state;
         u16 init_clients_timer;
         bool stop;
diff --git a/drivers/misc/mei/wd.c b/drivers/misc/mei/wd.c
index 912319e4fa90..3006cca34b16 100644
--- a/drivers/misc/mei/wd.c
+++ b/drivers/misc/mei/wd.c
@@ -202,10 +202,10 @@ static int mei_wd_ops_start(struct watchdog_device *wd_dev)
 
         mutex_lock(&dev->device_lock);
 
-        if (dev->mei_state != MEI_ENABLED) {
+        if (dev->dev_state != MEI_DEV_ENABLED) {
                 dev_dbg(&dev->pdev->dev,
-                        "wd: mei_state != MEI_ENABLED  mei_state = %d\n",
-                        dev->mei_state);
+                        "wd: dev_state != MEI_DEV_ENABLED  dev_state = %s\n",
+                        mei_dev_state_str(dev->dev_state));
                 goto end_unlock;
         }