drm/tilcdc: Use devm_kzalloc() and devm_kcalloc() for private data

Use devm_kzalloc() and devm_kcalloc() for private data allocation at
driver load time.

Signed-off-by: Jyri Sarha <jsarha@ti.com>
Reviewed-by: Tomi Valkeinen <tomi.valkeinen@ti.com>

4 files changed, 21 insertions, 46 deletions

diff --git a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
index 5f4da8c86ce2..051e5e1b7ad6 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_crtc.c
@@ -127,8 +127,6 @@ static void tilcdc_crtc_destroy(struct drm_crtc *crtc)
         of_node_put(crtc->port);
         drm_crtc_cleanup(crtc);
         drm_flip_work_cleanup(&tilcdc_crtc->unref_work);
-
-        kfree(tilcdc_crtc);
 }
 
 static int tilcdc_verify_fb(struct drm_crtc *crtc, struct drm_framebuffer *fb)
@@ -755,7 +753,7 @@ struct drm_crtc *tilcdc_crtc_create(struct drm_device *dev)
         struct drm_crtc *crtc;
         int ret;
 
-        tilcdc_crtc = kzalloc(sizeof(*tilcdc_crtc), GFP_KERNEL);
+        tilcdc_crtc = devm_kzalloc(dev->dev, sizeof(*tilcdc_crtc), GFP_KERNEL);
         if (!tilcdc_crtc) {
                 dev_err(dev->dev, "allocation failed\n");
                 return NULL;
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
index 41ec890c4bca..709bc903524d 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c
@@ -143,9 +143,6 @@ static int tilcdc_unload(struct drm_device *dev)
 
         pm_runtime_disable(dev->dev);
 
-        kfree(priv->saved_register);
-        kfree(priv);
-
         return 0;
 }
 
@@ -161,13 +158,12 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
         u32 bpp = 0;
         int ret;
 
-        priv = kzalloc(sizeof(*priv), GFP_KERNEL);
+        priv = devm_kzalloc(dev->dev, sizeof(*priv), GFP_KERNEL);
         if (priv)
-                priv->saved_register = kcalloc(tilcdc_num_regs(),
-                                               sizeof(*priv->saved_register),
-                                               GFP_KERNEL);
+                priv->saved_register =
+                        devm_kcalloc(dev->dev, tilcdc_num_regs(),
+                                     sizeof(*priv->saved_register), GFP_KERNEL);
         if (!priv || !priv->saved_register) {
-                kfree(priv);
                 dev_err(dev->dev, "failed to allocate private data\n");
                 return -ENOMEM;
         }
@@ -180,7 +176,7 @@ static int tilcdc_load(struct drm_device *dev, unsigned long flags)
         priv->wq = alloc_ordered_workqueue("tilcdc", 0);
         if (!priv->wq) {
                 ret = -ENOMEM;
-                goto fail_free_priv;
+                goto fail_unset_priv;
         }
 
         res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
@@ -346,10 +342,9 @@ fail_free_wq:
         flush_workqueue(priv->wq);
         destroy_workqueue(priv->wq);
 
-fail_free_priv:
+fail_unset_priv:
         dev->dev_private = NULL;
-        kfree(priv->saved_register);
-        kfree(priv);
+
         return ret;
 }
 
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_panel.c b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
index 8dcf02a79b23..ff7774c17d7c 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_panel.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_panel.c
@@ -45,14 +45,6 @@ struct panel_encoder {
 };
 #define to_panel_encoder(x) container_of(x, struct panel_encoder, base)
 
-
-static void panel_encoder_destroy(struct drm_encoder *encoder)
-{
-        struct panel_encoder *panel_encoder = to_panel_encoder(encoder);
-        drm_encoder_cleanup(encoder);
-        kfree(panel_encoder);
-}
-
 static void panel_encoder_dpms(struct drm_encoder *encoder, int mode)
 {
         struct panel_encoder *panel_encoder = to_panel_encoder(encoder);
@@ -90,7 +82,7 @@ static void panel_encoder_mode_set(struct drm_encoder *encoder,
 }
 
 static const struct drm_encoder_funcs panel_encoder_funcs = {
-                .destroy        = panel_encoder_destroy,
+                .destroy        = drm_encoder_cleanup,
 };
 
 static const struct drm_encoder_helper_funcs panel_encoder_helper_funcs = {
@@ -107,7 +99,8 @@ static struct drm_encoder *panel_encoder_create(struct drm_device *dev,
         struct drm_encoder *encoder;
         int ret;
 
-        panel_encoder = kzalloc(sizeof(*panel_encoder), GFP_KERNEL);
+        panel_encoder = devm_kzalloc(dev->dev, sizeof(*panel_encoder),
+                                     GFP_KERNEL);
         if (!panel_encoder) {
                 dev_err(dev->dev, "allocation failed\n");
                 return NULL;
@@ -128,7 +121,7 @@ static struct drm_encoder *panel_encoder_create(struct drm_device *dev,
         return encoder;
 
 fail:
-        panel_encoder_destroy(encoder);
+        drm_encoder_cleanup(encoder);
         return NULL;
 }
 
@@ -147,10 +140,8 @@ struct panel_connector {
 
 static void panel_connector_destroy(struct drm_connector *connector)
 {
-        struct panel_connector *panel_connector = to_panel_connector(connector);
         drm_connector_unregister(connector);
         drm_connector_cleanup(connector);
-        kfree(panel_connector);
 }
 
 static enum drm_connector_status panel_connector_detect(
@@ -223,7 +214,8 @@ static struct drm_connector *panel_connector_create(struct drm_device *dev,
         struct drm_connector *connector;
         int ret;
 
-        panel_connector = kzalloc(sizeof(*panel_connector), GFP_KERNEL);
+        panel_connector = devm_kzalloc(dev->dev, sizeof(*panel_connector),
+                                       GFP_KERNEL);
         if (!panel_connector) {
                 dev_err(dev->dev, "allocation failed\n");
                 return NULL;
diff --git a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
index 1c230172b402..7716f42f8aab 100644
--- a/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
+++ b/drivers/gpu/drm/tilcdc/tilcdc_tfp410.c
@@ -54,14 +54,6 @@ struct tfp410_encoder {
 };
 #define to_tfp410_encoder(x) container_of(x, struct tfp410_encoder, base)
 
-
-static void tfp410_encoder_destroy(struct drm_encoder *encoder)
-{
-        struct tfp410_encoder *tfp410_encoder = to_tfp410_encoder(encoder);
-        drm_encoder_cleanup(encoder);
-        kfree(tfp410_encoder);
-}
-
 static void tfp410_encoder_dpms(struct drm_encoder *encoder, int mode)
 {
         struct tfp410_encoder *tfp410_encoder = to_tfp410_encoder(encoder);
@@ -99,7 +91,7 @@ static void tfp410_encoder_mode_set(struct drm_encoder *encoder,
 }
 
 static const struct drm_encoder_funcs tfp410_encoder_funcs = {
-                .destroy        = tfp410_encoder_destroy,
+                .destroy        = drm_encoder_cleanup,
 };
 
 static const struct drm_encoder_helper_funcs tfp410_encoder_helper_funcs = {
@@ -116,7 +108,8 @@ static struct drm_encoder *tfp410_encoder_create(struct drm_device *dev,
         struct drm_encoder *encoder;
         int ret;
 
-        tfp410_encoder = kzalloc(sizeof(*tfp410_encoder), GFP_KERNEL);
+        tfp410_encoder = devm_kzalloc(dev->dev, sizeof(*tfp410_encoder),
+                                      GFP_KERNEL);
         if (!tfp410_encoder) {
                 dev_err(dev->dev, "allocation failed\n");
                 return NULL;
@@ -138,7 +131,7 @@ static struct drm_encoder *tfp410_encoder_create(struct drm_device *dev,
         return encoder;
 
 fail:
-        tfp410_encoder_destroy(encoder);
+        drm_encoder_cleanup(encoder);
         return NULL;
 }
 
@@ -157,10 +150,8 @@ struct tfp410_connector {
 
 static void tfp410_connector_destroy(struct drm_connector *connector)
 {
-        struct tfp410_connector *tfp410_connector = to_tfp410_connector(connector);
         drm_connector_unregister(connector);
         drm_connector_cleanup(connector);
-        kfree(tfp410_connector);
 }
 
 static enum drm_connector_status tfp410_connector_detect(
@@ -228,7 +219,8 @@ static struct drm_connector *tfp410_connector_create(struct drm_device *dev,
         struct drm_connector *connector;
         int ret;
 
-        tfp410_connector = kzalloc(sizeof(*tfp410_connector), GFP_KERNEL);
+        tfp410_connector = devm_kzalloc(dev->dev, sizeof(*tfp410_connector),
+                                        GFP_KERNEL);
         if (!tfp410_connector) {
                 dev_err(dev->dev, "allocation failed\n");
                 return NULL;
@@ -313,7 +305,7 @@ static int tfp410_probe(struct platform_device *pdev)
                 return -ENXIO;
         }
 
-        tfp410_mod = kzalloc(sizeof(*tfp410_mod), GFP_KERNEL);
+        tfp410_mod = devm_kzalloc(&pdev->dev, sizeof(*tfp410_mod), GFP_KERNEL);
         if (!tfp410_mod)
                 return -ENOMEM;
 
@@ -366,7 +358,6 @@ fail_adapter:
         i2c_put_adapter(tfp410_mod->i2c);
 
 fail:
-        kfree(tfp410_mod);
         tilcdc_module_cleanup(mod);
         return ret;
 }
@@ -380,7 +371,6 @@ static int tfp410_remove(struct platform_device *pdev)
         gpio_free(tfp410_mod->gpio);
 
         tilcdc_module_cleanup(mod);
-        kfree(tfp410_mod);
 
         return 0;
 }