diff mbox

GPU-DRM: Delete unnecessary checks before drm_property_unreference_blob()

Message ID 563C8B3E.405@users.sourceforge.net (mailing list archive)
State New, archived
Headers show

Commit Message

SF Markus Elfring Nov. 6, 2015, 11:13 a.m. UTC
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Fri, 6 Nov 2015 12:03:46 +0100

The drm_property_unreference_blob() function tests whether its argument
is NULL and then returns immediately.
Thus the tests around the calls are not needed.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
 drivers/gpu/drm/drm_atomic.c        | 9 +++------
 drivers/gpu/drm/drm_atomic_helper.c | 5 ++---
 2 files changed, 5 insertions(+), 9 deletions(-)

Comments

Daniel Vetter Nov. 16, 2015, 2:04 p.m. UTC | #1
On Fri, Nov 06, 2015 at 12:13:02PM +0100, SF Markus Elfring wrote:
> From: Markus Elfring <elfring@users.sourceforge.net>
> Date: Fri, 6 Nov 2015 12:03:46 +0100
> 
> The drm_property_unreference_blob() function tests whether its argument
> is NULL and then returns immediately.
> Thus the tests around the calls are not needed.
> 
> This issue was detected by using the Coccinelle software.
> 
> Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>

Applied to drm-misc, thanks.
-Daniel

> ---
>  drivers/gpu/drm/drm_atomic.c        | 9 +++------
>  drivers/gpu/drm/drm_atomic_helper.c | 5 ++---
>  2 files changed, 5 insertions(+), 9 deletions(-)
> 
> diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
> index 7bb3845..d65dc31 100644
> --- a/drivers/gpu/drm/drm_atomic.c
> +++ b/drivers/gpu/drm/drm_atomic.c
> @@ -316,8 +316,7 @@ int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
>  	if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
>  		return 0;
>  
> -	if (state->mode_blob)
> -		drm_property_unreference_blob(state->mode_blob);
> +	drm_property_unreference_blob(state->mode_blob);
>  	state->mode_blob = NULL;
>  
>  	if (mode) {
> @@ -363,8 +362,7 @@ int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
>  	if (blob == state->mode_blob)
>  		return 0;
>  
> -	if (state->mode_blob)
> -		drm_property_unreference_blob(state->mode_blob);
> +	drm_property_unreference_blob(state->mode_blob);
>  	state->mode_blob = NULL;
>  
>  	if (blob) {
> @@ -419,8 +417,7 @@ int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
>  		struct drm_property_blob *mode =
>  			drm_property_lookup_blob(dev, val);
>  		ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
> -		if (mode)
> -			drm_property_unreference_blob(mode);
> +		drm_property_unreference_blob(mode);
>  		return ret;
>  	}
>  	else if (crtc->funcs->atomic_set_property)
> diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
> index 0c6f621..9870c70 100644
> --- a/drivers/gpu/drm/drm_atomic_helper.c
> +++ b/drivers/gpu/drm/drm_atomic_helper.c
> @@ -2173,7 +2173,7 @@ EXPORT_SYMBOL(drm_atomic_helper_connector_dpms);
>   */
>  void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc)
>  {
> -	if (crtc->state && crtc->state->mode_blob)
> +	if (crtc->state)
>  		drm_property_unreference_blob(crtc->state->mode_blob);
>  	kfree(crtc->state);
>  	crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL);
> @@ -2241,8 +2241,7 @@ EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state);
>  void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
>  					    struct drm_crtc_state *state)
>  {
> -	if (state->mode_blob)
> -		drm_property_unreference_blob(state->mode_blob);
> +	drm_property_unreference_blob(state->mode_blob);
>  }
>  EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state);
>  
> -- 
> 2.6.2
>
diff mbox

Patch

diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 7bb3845..d65dc31 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -316,8 +316,7 @@  int drm_atomic_set_mode_for_crtc(struct drm_crtc_state *state,
 	if (mode && memcmp(&state->mode, mode, sizeof(*mode)) == 0)
 		return 0;
 
-	if (state->mode_blob)
-		drm_property_unreference_blob(state->mode_blob);
+	drm_property_unreference_blob(state->mode_blob);
 	state->mode_blob = NULL;
 
 	if (mode) {
@@ -363,8 +362,7 @@  int drm_atomic_set_mode_prop_for_crtc(struct drm_crtc_state *state,
 	if (blob == state->mode_blob)
 		return 0;
 
-	if (state->mode_blob)
-		drm_property_unreference_blob(state->mode_blob);
+	drm_property_unreference_blob(state->mode_blob);
 	state->mode_blob = NULL;
 
 	if (blob) {
@@ -419,8 +417,7 @@  int drm_atomic_crtc_set_property(struct drm_crtc *crtc,
 		struct drm_property_blob *mode =
 			drm_property_lookup_blob(dev, val);
 		ret = drm_atomic_set_mode_prop_for_crtc(state, mode);
-		if (mode)
-			drm_property_unreference_blob(mode);
+		drm_property_unreference_blob(mode);
 		return ret;
 	}
 	else if (crtc->funcs->atomic_set_property)
diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c
index 0c6f621..9870c70 100644
--- a/drivers/gpu/drm/drm_atomic_helper.c
+++ b/drivers/gpu/drm/drm_atomic_helper.c
@@ -2173,7 +2173,7 @@  EXPORT_SYMBOL(drm_atomic_helper_connector_dpms);
  */
 void drm_atomic_helper_crtc_reset(struct drm_crtc *crtc)
 {
-	if (crtc->state && crtc->state->mode_blob)
+	if (crtc->state)
 		drm_property_unreference_blob(crtc->state->mode_blob);
 	kfree(crtc->state);
 	crtc->state = kzalloc(sizeof(*crtc->state), GFP_KERNEL);
@@ -2241,8 +2241,7 @@  EXPORT_SYMBOL(drm_atomic_helper_crtc_duplicate_state);
 void __drm_atomic_helper_crtc_destroy_state(struct drm_crtc *crtc,
 					    struct drm_crtc_state *state)
 {
-	if (state->mode_blob)
-		drm_property_unreference_blob(state->mode_blob);
+	drm_property_unreference_blob(state->mode_blob);
 }
 EXPORT_SYMBOL(__drm_atomic_helper_crtc_destroy_state);