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[92.176.231.205]) by smtp.gmail.com with ESMTPSA id h19-20020a1ccc13000000b003a326ba4e99sm16742676wmb.34.2022.07.26.06.36.25 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 26 Jul 2022 06:36:26 -0700 (PDT) Message-ID: <3fb4d471-2653-07a6-8fbd-f59da6c113e0@redhat.com> Date: Tue, 26 Jul 2022 15:36:25 +0200 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.11.0 Subject: Re: [PATCH v2 08/10] drm/ofdrm: Add CRTC state To: Thomas Zimmermann , airlied@linux.ie, daniel@ffwll.ch, deller@gmx.de, maxime@cerno.tech, sam@ravnborg.org, msuchanek@suse.de, mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org, geert@linux-m68k.org, mark.cave-ayland@ilande.co.uk References: <20220720142732.32041-1-tzimmermann@suse.de> <20220720142732.32041-9-tzimmermann@suse.de> From: Javier Martinez Canillas In-Reply-To: <20220720142732.32041-9-tzimmermann@suse.de> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=javierm@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Language: en-US Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-fbdev@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On 7/20/22 16:27, Thomas Zimmermann wrote: > Add a dedicated CRTC state to ofdrm to later store information for > palette updates. > > Signed-off-by: Thomas Zimmermann > --- > drivers/gpu/drm/tiny/ofdrm.c | 62 ++++++++++++++++++++++++++++++++++-- > Reviewed-by: Javier Martinez Canillas [...] > +static void ofdrm_crtc_reset(struct drm_crtc *crtc) > +{ > + struct ofdrm_crtc_state *ofdrm_crtc_state; > + > + if (crtc->state) { > + ofdrm_crtc_state_destroy(to_ofdrm_crtc_state(crtc->state)); > + crtc->state = NULL; /* must be set to NULL here */ > + } > + > + ofdrm_crtc_state = kzalloc(sizeof(*ofdrm_crtc_state), GFP_KERNEL); > + if (!ofdrm_crtc_state) > + return; > + __drm_atomic_helper_crtc_reset(crtc, &ofdrm_crtc_state->base); > +} > + IMO this function is hard to read, I would instead write it as following: static void ofdrm_crtc_reset(struct drm_crtc *crtc) { struct ofdrm_crtc_state *ofdrm_crtc_state = kzalloc(sizeof(*ofdrm_crtc_state), GFP_KERNEL); if (!ofdrm_crtc_state) return; if (crtc->state) { ofdrm_crtc_state_destroy(to_ofdrm_crtc_state(crtc->state)); crtc->state = NULL; /* must be set to NULL here */ } __drm_atomic_helper_crtc_reset(crtc, &ofdrm_crtc_state->base); } Also with that form I think that the crtc->state = NULL could just be dropped ? -- Best regards, Javier Martinez Canillas Linux Engineering Red Hat