power: Remove mutex to hints

 * No longer needed.

Change-Id: I09fc90b4e5399b3f3b8a409edf3f57361da90100
diff --git a/power-660.c b/power-660.c
index ab2d314..df01bd6 100644
--- a/power-660.c
+++ b/power-660.c
@@ -36,7 +36,6 @@
 #include <fcntl.h>
 #include <dlfcn.h>
 #include <stdlib.h>
-#include <pthread.h>
 #include <unistd.h>
 
 #define LOG_TAG "QTI PowerHAL"
@@ -57,7 +56,6 @@
 static int video_encode_hint_sent;
 static int cam_preview_hint_sent;
 
-pthread_mutex_t camera_hint_mutex = PTHREAD_MUTEX_INITIALIZER;
 static int camera_hint_ref_count;
 static void process_video_encode_hint(void *metadata);
 //static void process_cam_preview_hint(void *metadata);
@@ -262,7 +260,6 @@
                 memcpy(resource_values, res, MIN_VAL(sizeof(resource_values), sizeof(res)));
                 num_resources = sizeof(res)/sizeof(res[0]);
             }
-            pthread_mutex_lock(&camera_hint_mutex);
             camera_hint_ref_count++;
             if (camera_hint_ref_count == 1) {
                 if (!video_encode_hint_sent) {
@@ -271,19 +268,16 @@
                     video_encode_hint_sent = 1;
                 }
            }
-           pthread_mutex_unlock(&camera_hint_mutex);
         }
     } else if (video_encode_metadata.state == 0) {
         if ((strncmp(governor, INTERACTIVE_GOVERNOR,
             strlen(INTERACTIVE_GOVERNOR)) == 0) &&
             (strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
-            pthread_mutex_lock(&camera_hint_mutex);
             camera_hint_ref_count--;
             if (!camera_hint_ref_count) {
                 undo_hint_action(video_encode_metadata.hint_id);
                 video_encode_hint_sent = 0;
             }
-            pthread_mutex_unlock(&camera_hint_mutex);
             return ;
         }
     }
diff --git a/power-710.c b/power-710.c
index 4d2df0c..ab824af 100644
--- a/power-710.c
+++ b/power-710.c
@@ -35,7 +35,6 @@
 #include <fcntl.h>
 #include <dlfcn.h>
 #include <stdlib.h>
-#include <pthread.h>
 #include <unistd.h>
 
 #define LOG_TAG "QTI PowerHAL"
diff --git a/power-845.c b/power-845.c
index 9c97477..82a7f54 100644
--- a/power-845.c
+++ b/power-845.c
@@ -37,7 +37,6 @@
 #include <fcntl.h>
 #include <dlfcn.h>
 #include <stdlib.h>
-#include <pthread.h>
 #include <unistd.h>
 
 #define LOG_TAG "QTI PowerHAL"
@@ -71,7 +70,6 @@
                                            { VR_MODE, VR_MODE_HINT },
                                            { VR_SUSTAINED_MODE, VR_MODE_SUSTAINED_PERF_HINT } };
 
-static pthread_mutex_t perf_mode_switch_lock = PTHREAD_MUTEX_INITIALIZER;
 static int current_mode = NORMAL_MODE;
 
 static inline  int get_perfd_hint_id(perf_mode_type_t type) {
@@ -112,20 +110,16 @@
 
 static int process_perf_hint(void *data, perf_mode_type_t mode) {
 
-    pthread_mutex_lock(&perf_mode_switch_lock);
-
     // enable
     if (data){
         ALOGI("Enable request for mode: 0x%x", mode);
         // check if mode is current mode
         if ( current_mode & mode ) {
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             ALOGD("Mode 0x%x already enabled", mode);
             return HINT_HANDLED;
         }
         // enable requested mode
         if ( 0 != switch_mode(current_mode | mode)) {
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             ALOGE("Couldn't enable mode 0x%x", mode);
             return HINT_NONE;
         }
@@ -136,13 +130,11 @@
         ALOGI("Disable request for mode: 0x%x", mode);
         // check if mode is enabled
         if ( !(current_mode & mode) ) {
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             ALOGD("Mode 0x%x already disabled", mode);
             return HINT_HANDLED;
         }
         //disable requested mode
         if ( 0 != switch_mode(current_mode & ~mode)) {
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             ALOGE("Couldn't disable mode 0x%x", mode);
             return HINT_NONE;
         }
@@ -150,7 +142,6 @@
         ALOGI("Current mode is 0x%x", current_mode);
     }
 
-    pthread_mutex_unlock(&perf_mode_switch_lock);
     return HINT_HANDLED;
 }
 
diff --git a/power-8937.c b/power-8937.c
index 8a288a3..6027399 100644
--- a/power-8937.c
+++ b/power-8937.c
@@ -37,7 +37,6 @@
 #include <dlfcn.h>
 #include <stdlib.h>
 #include <unistd.h>
-#include <pthread.h>
 
 #define LOG_TAG "QTI PowerHAL"
 #include <utils/Log.h>
@@ -55,7 +54,6 @@
 static int saved_interactive_mode = -1;
 static int display_hint_sent;
 static int video_encode_hint_sent;
-pthread_mutex_t camera_hint_mutex = PTHREAD_MUTEX_INITIALIZER;
 static int camera_hint_ref_count;
 static void process_video_encode_hint(void *metadata);
 
@@ -209,7 +207,6 @@
                              };
                 memcpy(resource_values, res, MIN_VAL(sizeof(resource_values), sizeof(res)));
                 num_resources = sizeof(res)/sizeof(res[0]);
-                pthread_mutex_lock(&camera_hint_mutex);
                 camera_hint_ref_count++;
                 if (camera_hint_ref_count == 1) {
                     if (!video_encode_hint_sent) {
@@ -218,7 +215,6 @@
                         video_encode_hint_sent = 1;
                     }
                 }
-                pthread_mutex_unlock(&camera_hint_mutex);
             }
             else {
                 /* sample_ms = 10mS */
@@ -226,7 +222,6 @@
                             };
                 memcpy(resource_values, res, MIN_VAL(sizeof(resource_values), sizeof(res)));
                 num_resources = sizeof(res)/sizeof(res[0]);
-                pthread_mutex_lock(&camera_hint_mutex);
                 camera_hint_ref_count++;
                 if (camera_hint_ref_count == 1) {
                     if (!video_encode_hint_sent) {
@@ -235,7 +230,6 @@
                         video_encode_hint_sent = 1;
                     }
                 }
-                pthread_mutex_unlock(&camera_hint_mutex);
             }
         }
         else if ((strncmp(governor, INTERACTIVE_GOVERNOR,
@@ -257,14 +251,12 @@
                          };
             memcpy(resource_values, res, MIN_VAL(sizeof(resource_values), sizeof(res)));
             num_resources = sizeof(res)/sizeof(res[0]);
-            pthread_mutex_lock(&camera_hint_mutex);
             camera_hint_ref_count++;
             if (!video_encode_hint_sent) {
                 perform_hint_action(video_encode_metadata.hint_id,
                 resource_values,num_resources);
                 video_encode_hint_sent = 1;
             }
-            pthread_mutex_unlock(&camera_hint_mutex);
         }
     } else if (video_encode_metadata.state == 0) {
         if (((strncmp(governor, INTERACTIVE_GOVERNOR,
@@ -273,13 +265,11 @@
             ((strncmp(governor, SCHEDUTIL_GOVERNOR,
             strlen(SCHEDUTIL_GOVERNOR)) == 0) &&
             (strlen(governor) == strlen(SCHEDUTIL_GOVERNOR)))) {
-            pthread_mutex_lock(&camera_hint_mutex);
             camera_hint_ref_count--;
             if (!camera_hint_ref_count) {
                 undo_hint_action(video_encode_metadata.hint_id);
                 video_encode_hint_sent = 0;
             }
-            pthread_mutex_unlock(&camera_hint_mutex);
             return ;
         }
     }
diff --git a/power-8953.c b/power-8953.c
index fe39bd0..05283af 100644
--- a/power-8953.c
+++ b/power-8953.c
@@ -36,7 +36,6 @@
 #include <fcntl.h>
 #include <dlfcn.h>
 #include <stdlib.h>
-#include <pthread.h>
 #include <unistd.h>
 
 #define LOG_TAG "QTI PowerHAL"
@@ -57,7 +56,6 @@
 static int video_encode_hint_sent;
 static int cam_preview_hint_sent;
 
-pthread_mutex_t camera_hint_mutex = PTHREAD_MUTEX_INITIALIZER;
 static int camera_hint_ref_count;
 static void process_video_encode_hint(void *metadata);
 //static void process_cam_preview_hint(void *metadata);
@@ -212,7 +210,6 @@
                              };
                 memcpy(resource_values, res, MIN_VAL(sizeof(resource_values), sizeof(res)));
                 num_resources = sizeof(res)/sizeof(res[0]);
-                pthread_mutex_lock(&camera_hint_mutex);
                 camera_hint_ref_count++;
                 if (camera_hint_ref_count == 1) {
                     if (!video_encode_hint_sent) {
@@ -221,7 +218,6 @@
                         video_encode_hint_sent = 1;
                     }
                 }
-                pthread_mutex_unlock(&camera_hint_mutex);
             }
             else {
                 /* sample_ms = 10mS */
@@ -229,7 +225,6 @@
                             };
                 memcpy(resource_values, res, MIN_VAL(sizeof(resource_values), sizeof(res)));
                 num_resources = sizeof(res)/sizeof(res[0]);
-                pthread_mutex_lock(&camera_hint_mutex);
                 camera_hint_ref_count++;
                 if (camera_hint_ref_count == 1) {
                     if (!video_encode_hint_sent) {
@@ -238,7 +233,6 @@
                         video_encode_hint_sent = 1;
                     }
                 }
-                pthread_mutex_unlock(&camera_hint_mutex);
             }
         }
         else if ((strncmp(governor, INTERACTIVE_GOVERNOR,
@@ -252,7 +246,6 @@
                          };
             memcpy(resource_values, res, MIN_VAL(sizeof(resource_values), sizeof(res)));
             num_resources = sizeof(res)/sizeof(res[0]);
-            pthread_mutex_lock(&camera_hint_mutex);
             camera_hint_ref_count++;
             if (camera_hint_ref_count == 1) {
                 if (!video_encode_hint_sent) {
@@ -261,7 +254,6 @@
                     video_encode_hint_sent = 1;
                 }
            }
-           pthread_mutex_unlock(&camera_hint_mutex);
         }
     } else if (video_encode_metadata.state == 0) {
         if (((strncmp(governor, INTERACTIVE_GOVERNOR,
@@ -270,13 +262,11 @@
             ((strncmp(governor, SCHEDUTIL_GOVERNOR,
             strlen(SCHEDUTIL_GOVERNOR)) == 0) &&
             (strlen(governor) == strlen(SCHEDUTIL_GOVERNOR)))) {
-            pthread_mutex_lock(&camera_hint_mutex);
             camera_hint_ref_count--;
             if (!camera_hint_ref_count) {
                 undo_hint_action(video_encode_metadata.hint_id);
                 video_encode_hint_sent = 0;
             }
-            pthread_mutex_unlock(&camera_hint_mutex);
             return ;
         }
     }
diff --git a/power-8996.c b/power-8996.c
index 6799721..d226a33 100644
--- a/power-8996.c
+++ b/power-8996.c
@@ -47,7 +47,6 @@
 #include "performance.h"
 #include "power-common.h"
 
-pthread_mutex_t camera_hint_mutex = PTHREAD_MUTEX_INITIALIZER;
 static int display_hint_sent;
 static int camera_hint_ref_count;
 
@@ -101,25 +100,21 @@
                 0x41420000, 0x5A, 0x41400100, 0x4, 0x41410100, 0x5F, 0x41414100, 0x22C, 0x41420100, 0x5A,
                 0x41810000, 0x9C4, 0x41814000, 0x32, 0x4180C000, 0x0, 0x41820000, 0xA};
 
-            pthread_mutex_lock(&camera_hint_mutex);
             camera_hint_ref_count++;
             if (camera_hint_ref_count == 1) {
                 perform_hint_action(video_encode_metadata.hint_id,
                         resource_values, sizeof(resource_values)/sizeof(resource_values[0]));
             }
-            pthread_mutex_unlock(&camera_hint_mutex);
             ALOGI("Video Encode hint start");
             return HINT_HANDLED;
         }
     } else if (video_encode_metadata.state == 0) {
         if ((strncmp(governor, INTERACTIVE_GOVERNOR, strlen(INTERACTIVE_GOVERNOR)) == 0) &&
                 (strlen(governor) == strlen(INTERACTIVE_GOVERNOR))) {
-            pthread_mutex_lock(&camera_hint_mutex);
             camera_hint_ref_count--;
             if (!camera_hint_ref_count) {
                 undo_hint_action(video_encode_metadata.hint_id);
             }
-            pthread_mutex_unlock(&camera_hint_mutex);
 
             ALOGI("Video Encode hint stop");
             return HINT_HANDLED;
diff --git a/power-8998.c b/power-8998.c
index c0b17d6..ad453e8 100644
--- a/power-8998.c
+++ b/power-8998.c
@@ -35,7 +35,6 @@
 #include <fcntl.h>
 #include <dlfcn.h>
 #include <stdlib.h>
-#include <pthread.h>
 #include <unistd.h>
 
 #define LOG_TAG "QTI PowerHAL"
@@ -69,7 +68,6 @@
                                            { VR_MODE, VR_MODE_HINT },
                                            { VR_SUSTAINED_MODE, VR_MODE_SUSTAINED_PERF_HINT } };
 
-static pthread_mutex_t perf_mode_switch_lock = PTHREAD_MUTEX_INITIALIZER;
 static int current_mode = NORMAL_MODE;
 
 static inline  int get_perfd_hint_id(perf_mode_type_t type) {
@@ -110,20 +108,16 @@
 
 static int process_perf_hint(void *data, perf_mode_type_t mode) {
 
-    pthread_mutex_lock(&perf_mode_switch_lock);
-
     // enable
     if (data){
         ALOGI("Enable request for mode: 0x%x", mode);
         // check if mode is current mode
         if ( current_mode & mode ) {
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             ALOGD("Mode 0x%x already enabled", mode);
             return HINT_HANDLED;
         }
         // enable requested mode
         if ( 0 != switch_mode(current_mode | mode)) {
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             ALOGE("Couldn't enable mode 0x%x", mode);
             return HINT_NONE;
         }
@@ -134,13 +128,11 @@
         ALOGI("Disable request for mode: 0x%x", mode);
         // check if mode is enabled
         if ( !(current_mode & mode) ) {
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             ALOGD("Mode 0x%x already disabled", mode);
             return HINT_HANDLED;
         }
         //disable requested mode
         if ( 0 != switch_mode(current_mode & ~mode)) {
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             ALOGE("Couldn't disable mode 0x%x", mode);
             return HINT_NONE;
         }
@@ -148,7 +140,6 @@
         ALOGI("Current mode is 0x%x", current_mode);
     }
 
-    pthread_mutex_unlock(&perf_mode_switch_lock);
     return HINT_HANDLED;
 }
 
@@ -207,11 +198,9 @@
             ret_val = process_perf_hint(data, VR_MODE);
             break;
         case POWER_HINT_INTERACTION:
-            pthread_mutex_lock(&perf_mode_switch_lock);
             if (current_mode != NORMAL_MODE) {
                 ret_val = HINT_HANDLED;
             }
-            pthread_mutex_unlock(&perf_mode_switch_lock);
             break;
         default:
             break;