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[158.248.194.18]) by smtp.gmail.com with ESMTPSA id g13sm79482lfb.74.2019.12.02.11.33.03 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 02 Dec 2019 11:33:04 -0800 (PST) From: Sam Ravnborg To: dri-devel@lists.freedesktop.org, Thierry Reding , Laurent Pinchart Subject: [PATCH v1 01/26] drm/drm_panel: no error when no callback Date: Mon, 2 Dec 2019 20:32:05 +0100 Message-Id: <20191202193230.21310-2-sam@ravnborg.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191202193230.21310-1-sam@ravnborg.org> References: <20191202193230.21310-1-sam@ravnborg.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191202_113307_485762_499ADD05 X-CRM114-Status: UNSURE ( 9.86 ) X-CRM114-Notice: Please train this message. X-Spam-Score: 0.4 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (0.4 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [2a00:1450:4864:20:0:0:0:242 listed in] [list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.2 HEADER_FROM_DIFFERENT_DOMAINS From and EnvelopeFrom 2nd level mail domains are different 0.0 FREEMAIL_FROM Sender email is commonly abused enduser mail provider (sam.ravnborg[at]gmail.com) 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.2 FREEMAIL_FORGED_FROMDOMAIN 2nd level domains in From and EnvelopeFrom freemail headers are different X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Neil Armstrong , David Airlie , Linus Walleij , Stefan Agner , Andrzej Hajda , Benjamin Gaignard , Sam Ravnborg , linux-samsung-soc@vger.kernel.org, linux-rockchip@lists.infradead.org, Tomi Valkeinen , Jagan Teki , NXP Linux Team , Jitao Shi , Pengutronix Kernel Team , Maarten Lankhorst , Maxime Ripard , linux-mediatek@lists.infradead.org, Abhinav Kumar , linux-tegra@vger.kernel.org, Sean Paul , linux-arm-kernel@lists.infradead.org, Purism Kernel Team , linux-renesas-soc@vger.kernel.org, Boris Brezillon , Daniel Vetter Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The callbacks in drm_panel_funcs are optional, so do not return an error just because no callback is assigned. Signed-off-by: Sam Ravnborg Cc: Maarten Lankhorst Cc: Maxime Ripard Cc: Thierry Reding Cc: Sam Ravnborg Cc: David Airlie Cc: Daniel Vetter Reviewed-by: Laurent Pinchart --- drivers/gpu/drm/drm_panel.c | 35 +++++++++++++++++++++++++---------- 1 file changed, 25 insertions(+), 10 deletions(-) diff --git a/drivers/gpu/drm/drm_panel.c b/drivers/gpu/drm/drm_panel.c index ed7985c0535a..2d59cdd05e50 100644 --- a/drivers/gpu/drm/drm_panel.c +++ b/drivers/gpu/drm/drm_panel.c @@ -151,10 +151,13 @@ EXPORT_SYMBOL(drm_panel_detach); */ int drm_panel_prepare(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->prepare) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->prepare) return panel->funcs->prepare(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_prepare); @@ -171,10 +174,13 @@ EXPORT_SYMBOL(drm_panel_prepare); */ int drm_panel_unprepare(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->unprepare) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->unprepare) return panel->funcs->unprepare(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_unprepare); @@ -190,10 +196,13 @@ EXPORT_SYMBOL(drm_panel_unprepare); */ int drm_panel_enable(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->enable) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->enable) return panel->funcs->enable(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_enable); @@ -209,10 +218,13 @@ EXPORT_SYMBOL(drm_panel_enable); */ int drm_panel_disable(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->disable) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->disable) return panel->funcs->disable(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_disable); @@ -228,10 +240,13 @@ EXPORT_SYMBOL(drm_panel_disable); */ int drm_panel_get_modes(struct drm_panel *panel) { - if (panel && panel->funcs && panel->funcs->get_modes) + if (!panel) + return -EINVAL; + + if (panel->funcs && panel->funcs->get_modes) return panel->funcs->get_modes(panel); - return panel ? -ENOSYS : -EINVAL; + return 0; } EXPORT_SYMBOL(drm_panel_get_modes);