Remove unused mutex fields

The mutex usage is removed in aosp/179410 , we can safely remove the
mutex fields now.

Test: th
Bug: 318078616
Change-Id: Id22e8eab9c8cb6cc24fcbf9e32d222ba6d11cb84

2 files changed, 1 insertions, 9 deletions

diff --git a/libfec/fec_open.cpp b/libfec/fec_open.cpp
index 175207b8..6825942b 100644
--- a/libfec/fec_open.cpp
+++ b/libfec/fec_open.cpp
@@ -418,8 +418,6 @@ int fec_close(struct fec_handle *f)
         close(f->fd);
     }
 
-    pthread_mutex_destroy(&f->mutex);
-
     reset_handle(f);
     delete f;
 
@@ -528,11 +526,6 @@ int fec_open(struct fec_handle **handle, const char *path, int mode, int flags,
     f->ecc.rsn = FEC_RSM - roots;
     f->flags = flags;
 
-    if (unlikely(pthread_mutex_init(&f->mutex, NULL) != 0)) {
-        error("failed to create a mutex: %s", strerror(errno));
-        return -1;
-    }
-
     f->fd = TEMP_FAILURE_RETRY(open(path, mode | O_CLOEXEC));
 
     if (f->fd == -1) {
diff --git a/libfec/fec_private.h b/libfec/fec_private.h
index 199f8017..0c633223 100644
--- a/libfec/fec_private.h
+++ b/libfec/fec_private.h
@@ -135,8 +135,7 @@ struct fec_handle {
     ecc_info ecc;
     int fd;
     int flags; /* additional flags passed to fec_open */
-    int mode; /* mode for open(2) */
-    pthread_mutex_t mutex;
+    int mode;  /* mode for open(2) */
     uint64_t errors;
     uint64_t data_size;
     uint64_t pos;