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SubjectRe: [PATCH] GPU-DRM: Delete unnecessary checks before drm_property_unreference_blob()
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
>

--
Daniel Vetter
Software Engineer, Intel Corporation
http://blog.ffwll.ch


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