drm/tegra: debugfs cleanup cannot fail

The debugfs cleanup code never fails, so no error is returned. Therefore
the functions can all return void instead.

Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c
index 0b476e1..a999478 100644 (file)
--- a/drivers/gpu/drm/tegra/dsi.c
+++ b/drivers/gpu/drm/tegra/dsi.c
@@ -228,7 +228,7 @@ remove:
        return err;
 }
 
-static int tegra_dsi_debugfs_exit(struct tegra_dsi *dsi)
+static void tegra_dsi_debugfs_exit(struct tegra_dsi *dsi)
 {
        drm_debugfs_remove_files(dsi->debugfs_files, ARRAY_SIZE(debugfs_files),
                                 dsi->minor);
@@ -239,8 +239,6 @@ static int tegra_dsi_debugfs_exit(struct tegra_dsi *dsi)
 
        debugfs_remove(dsi->debugfs);
        dsi->debugfs = NULL;
-
-       return 0;
 }
 
 #define PKT_ID0(id)    ((((id) & 0x3f) <<  3) | (1 <<  9))
@@ -1025,15 +1023,11 @@ reset:
 static int tegra_dsi_exit(struct host1x_client *client)
 {
        struct tegra_dsi *dsi = host1x_client_to_dsi(client);
-       int err;
 
        tegra_output_exit(&dsi->output);
 
-       if (IS_ENABLED(CONFIG_DEBUG_FS)) {
-               err = tegra_dsi_debugfs_exit(dsi);
-               if (err < 0)
-                       dev_err(dsi->dev, "debugfs cleanup failed: %d\n", err);
-       }
+       if (IS_ENABLED(CONFIG_DEBUG_FS))
+               tegra_dsi_debugfs_exit(dsi);
 
        reset_control_assert(dsi->rst);
 

diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c
index 056bb2c..b4fe909 100644 (file)
--- a/drivers/gpu/drm/tegra/hdmi.c
+++ b/drivers/gpu/drm/tegra/hdmi.c
@@ -1310,7 +1310,7 @@ remove:
        return err;
 }
 
-static int tegra_hdmi_debugfs_exit(struct tegra_hdmi *hdmi)
+static void tegra_hdmi_debugfs_exit(struct tegra_hdmi *hdmi)
 {
        drm_debugfs_remove_files(hdmi->debugfs_files, ARRAY_SIZE(debugfs_files),
                                 hdmi->minor);
@@ -1321,8 +1321,6 @@ static int tegra_hdmi_debugfs_exit(struct tegra_hdmi *hdmi)
 
        debugfs_remove(hdmi->debugfs);
        hdmi->debugfs = NULL;
-
-       return 0;
 }
 
 static int tegra_hdmi_init(struct host1x_client *client)
@@ -1393,7 +1391,6 @@ static int tegra_hdmi_init(struct host1x_client *client)
 static int tegra_hdmi_exit(struct host1x_client *client)
 {
        struct tegra_hdmi *hdmi = host1x_client_to_hdmi(client);
-       int err;
 
        tegra_output_exit(&hdmi->output);
 
@@ -1404,12 +1401,8 @@ static int tegra_hdmi_exit(struct host1x_client *client)
        regulator_disable(hdmi->pll);
        regulator_disable(hdmi->hdmi);
 
-       if (IS_ENABLED(CONFIG_DEBUG_FS)) {
-               err = tegra_hdmi_debugfs_exit(hdmi);
-               if (err < 0)
-                       dev_err(client->dev, "debugfs cleanup failed: %d\n",
-                               err);
-       }
+       if (IS_ENABLED(CONFIG_DEBUG_FS))
+               tegra_hdmi_debugfs_exit(hdmi);
 
        return 0;
 }

diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
index be1ad42..a1c16c5 100644 (file)
--- a/drivers/gpu/drm/tegra/sor.c
+++ b/drivers/gpu/drm/tegra/sor.c
@@ -710,12 +710,10 @@ remove:
        return err;
 }
 
-static int tegra_sor_debugfs_exit(struct tegra_sor *sor)
+static void tegra_sor_debugfs_exit(struct tegra_sor *sor)
 {
        debugfs_remove_recursive(sor->debugfs);
        sor->debugfs = NULL;
-
-       return 0;
 }
 
 static void tegra_sor_connector_dpms(struct drm_connector *connector, int mode)
@@ -1410,11 +1408,8 @@ static int tegra_sor_exit(struct host1x_client *client)
        clk_disable_unprepare(sor->clk_dp);
        clk_disable_unprepare(sor->clk);
 
-       if (IS_ENABLED(CONFIG_DEBUG_FS)) {
-               err = tegra_sor_debugfs_exit(sor);
-               if (err < 0)
-                       dev_err(sor->dev, "debugfs cleanup failed: %d\n", err);
-       }
+       if (IS_ENABLED(CONFIG_DEBUG_FS))
+               tegra_sor_debugfs_exit(sor);
 
        return 0;
 }