egl/dri2: remove error checks on return values from mtx_lock and cnd_wait

This removes unnecessary error checks on return result of mtx_lock
and cnd_wait calls as in all other places in MESA source since there
is no chance that any of these functions return any of error codes
in current implementation.

This patch also removes a redundent _eglError call that follows
EGL_FALSE check in the bottom of dri2_client_wait_sync.

Signed-off-by: Dongwon Kim <dongwon.kim@intel.com>
Reviewed-by: Emil Velikov <emil.velikov@collabora.com>

diff --git a/src/egl/drivers/dri2/egl_dri2.c b/src/egl/drivers/dri2/egl_dri2.c
index 3e3d1c8d03d687ab99dc121a44a8a825b667350b..ac5ecbbf3fd8f3e938a4fe12303a196030478074 100644 (file)
--- a/src/egl/drivers/dri2/egl_dri2.c
+++ b/src/egl/drivers/dri2/egl_dri2.c
@@ -2666,19 +2666,9 @@ dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
 
       /* if timeout is EGL_FOREVER_KHR, it should wait without any timeout.*/
       if (timeout == EGL_FOREVER_KHR) {
-         if (mtx_lock(&dri2_sync->mutex)) {
-            ret = EGL_FALSE;
-            goto cleanup;
-         }
-
-         ret = cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
-
+         mtx_lock(&dri2_sync->mutex);
+         cnd_wait(&dri2_sync->cond, &dri2_sync->mutex);
          mtx_unlock(&dri2_sync->mutex);
-
-         if (ret) {
-            _eglError(EGL_BAD_PARAMETER, "eglClientWaitSyncKHR");
-            ret = EGL_FALSE;
-         }
       } else {
          /* if reusable sync has not been yet signaled */
          if (dri2_sync->base.SyncStatus != EGL_SIGNALED_KHR) {
@@ -2697,38 +2687,25 @@ dri2_client_wait_sync(_EGLDriver *drv, _EGLDisplay *dpy, _EGLSync *sync,
                expire.nsec -= 1000000000L;
             }
 
-            if (mtx_lock(&dri2_sync->mutex)) {
-               ret = EGL_FALSE;
-               goto cleanup;
-            }
-
+            mtx_lock(&dri2_sync->mutex);
             ret = cnd_timedwait(&dri2_sync->cond, &dri2_sync->mutex, &expire);
-
             mtx_unlock(&dri2_sync->mutex);
 
-            if (ret)
-               if (ret == thrd_busy) {
-                  if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
-                     ret = EGL_TIMEOUT_EXPIRED_KHR;
-                  } else {
-                     _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
-                     ret = EGL_FALSE;
-                  }
+            if (ret == thrd_busy) {
+               if (dri2_sync->base.SyncStatus == EGL_UNSIGNALED_KHR) {
+                  ret = EGL_TIMEOUT_EXPIRED_KHR;
+               } else {
+                  _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
+                  ret = EGL_FALSE;
                }
+            }
          }
       }
       break;
   }
+  dri2_egl_unref_sync(dri2_dpy, dri2_sync);
 
- cleanup:
-   dri2_egl_unref_sync(dri2_dpy, dri2_sync);
-
-   if (ret == EGL_FALSE) {
-      _eglError(EGL_BAD_ACCESS, "eglClientWaitSyncKHR");
-      return EGL_FALSE;
-   }
-
-   return ret;
+  return ret;
 }
 
 static EGLBoolean