msm: no need to check return value of debugfs_create functions

When calling debugfs functions, there is no need to ever check the
return value.  The function can work or not, but the code logic should
never do something different based on this.

Cc: Rob Clark <robdclark@gmail.com>
Cc: Sean Paul <sean@poorly.run>
Cc: David Airlie <airlied@linux.ie>
Cc: Daniel Vetter <daniel@ffwll.ch>
Cc: linux-arm-msm@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Cc: freedreno@lists.freedesktop.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
[small fixup for unused variable warning]
Signed-off-by: Rob Clark <robdclark@chromium.org>

diff --git a/drivers/gpu/drm/msm/msm_perf.c b/drivers/gpu/drm/msm/msm_perf.c
index 5ab21bd..95948cf 100644 (file)
--- a/drivers/gpu/drm/msm/msm_perf.c
+++ b/drivers/gpu/drm/msm/msm_perf.c
@@ -205,7 +205,6 @@ int msm_perf_debugfs_init(struct drm_minor *minor)
 {
        struct msm_drm_private *priv = minor->dev->dev_private;
        struct msm_perf_state *perf;
-       struct dentry *ent;
 
        /* only create on first minor: */
        if (priv->perf)
@@ -220,19 +219,9 @@ int msm_perf_debugfs_init(struct drm_minor *minor)
        mutex_init(&perf->read_lock);
        priv->perf = perf;
 
-       ent = debugfs_create_file("perf", S_IFREG | S_IRUGO,
-                       minor->debugfs_root, perf, &perf_debugfs_fops);
-       if (!ent) {
-               DRM_ERROR("Cannot create /sys/kernel/debug/dri/%pd/perf\n",
-                               minor->debugfs_root);
-               goto fail;
-       }
-
+       debugfs_create_file("perf", S_IFREG | S_IRUGO, minor->debugfs_root,
+                           perf, &perf_debugfs_fops);
        return 0;
-
-fail:
-       msm_perf_debugfs_cleanup(priv);
-       return -1;
 }
 
 void msm_perf_debugfs_cleanup(struct msm_drm_private *priv)

diff --git a/drivers/gpu/drm/msm/msm_rd.c b/drivers/gpu/drm/msm/msm_rd.c
index d211729..480d810 100644 (file)
--- a/drivers/gpu/drm/msm/msm_rd.c
+++ b/drivers/gpu/drm/msm/msm_rd.c
@@ -244,8 +244,6 @@ static void rd_cleanup(struct msm_rd_state *rd)
 static struct msm_rd_state *rd_init(struct drm_minor *minor, const char *name)
 {
        struct msm_rd_state *rd;
-       struct dentry *ent;
-       int ret = 0;
 
        rd = kzalloc(sizeof(*rd), GFP_KERNEL);
        if (!rd)
@@ -258,20 +256,10 @@ static struct msm_rd_state *rd_init(struct drm_minor *minor, const char *name)
 
        init_waitqueue_head(&rd->fifo_event);
 
-       ent = debugfs_create_file(name, S_IFREG | S_IRUGO,
-                       minor->debugfs_root, rd, &rd_debugfs_fops);
-       if (!ent) {
-               DRM_ERROR("Cannot create /sys/kernel/debug/dri/%pd/%s\n",
-                               minor->debugfs_root, name);
-               ret = -ENOMEM;
-               goto fail;
-       }
+       debugfs_create_file(name, S_IFREG | S_IRUGO, minor->debugfs_root, rd,
+                           &rd_debugfs_fops);
 
        return rd;
-
-fail:
-       rd_cleanup(rd);
-       return ERR_PTR(ret);
 }
 
 int msm_rd_debugfs_init(struct drm_minor *minor)