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Thu, 22 Sep 2022 10:27:16 -0400 (EDT) From: Maxime Ripard Date: Thu, 22 Sep 2022 16:25:32 +0200 MIME-Version: 1.0 Message-Id: <20220728-rpi-analog-tv-properties-v2-15-f733a0ed9f90@cerno.tech> References: <20220728-rpi-analog-tv-properties-v2-0-f733a0ed9f90@cerno.tech> In-Reply-To: <20220728-rpi-analog-tv-properties-v2-0-f733a0ed9f90@cerno.tech> To: Jernej Skrabec , Rodrigo Vivi , Ben Skeggs , David Airlie , Maxime Ripard , Joonas Lahtinen , Emma Anholt , Karol Herbst , Samuel Holland , Jani Nikula , Thomas Zimmermann , Daniel Vetter , Lyude Paul , Maarten Lankhorst , Tvrtko Ursulin , Chen-Yu Tsai X-Mailer: b4 0.10.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=672; i=maxime@cerno.tech; h=from:subject:message-id; bh=LKwTlWbGSe8b9P99h7leZiXJ3B6Avu2KKY+GOK8gNk0=; b=owGbwMvMwCX2+D1vfrpE4FHG02pJDMk6BQGqpWo/719bl6wawfHuyaMrYf8mvLlTp17f8Mz13rPn 0+Yc6ChlYRDjYpAVU2SJETZfEndq1utONr55MHNYmUCGMHBxCsBEDt5k+GcQJHfBb7Z8itrPYLmjqz Kvu78x5z8iJdEvetmxZObUplOMDGftxN/+b7eSs2hS1S2Onnn3afbhZf8NjW6rTb6akyc6jQ8A X-Developer-Key: i=maxime@cerno.tech; a=openpgp; fpr=BE5675C37E818C8B5764241C254BCFC56BF6CE8D Subject: [Intel-gfx] [PATCH v2 15/33] drm/modes: Bail out of named mode parsing if empty X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: =?unknown-8bit?q?Dom_Cobley_=3Cdom=40raspberrypi=2Ecom=3E=2C_Dave_Steven?= =?unknown-8bit?q?son_=3Cdave=2Estevenson=40raspberrypi=2Ecom=3E=2C_nouveau?= =?unknown-8bit?q?=40lists=2Efreedesktop=2Eorg=2C_intel-gfx=40lists=2Efreede?= =?unknown-8bit?q?sktop=2Eorg=2C_linux-kernel=40vger=2Ekernel=2Eorg=2C_dri-d?= =?unknown-8bit?q?evel=40lists=2Efreedesktop=2Eorg=2C_linux-sunxi=40lists=2E?= =?unknown-8bit?q?linux=2Edev=2C_Noralf_Tr=C3=B8nnes_=3Cnoralf=40tronnes=2Eo?= =?unknown-8bit?q?rg=3E=2C_Geert_Uytterhoeven_=3Cgeert=40linux-m68k=2Eorg=3E?= =?unknown-8bit?q?=2C_Maxime_Ripard_=3Cmaxime=40cerno=2Etech=3E=2C_Mateusz_K?= =?unknown-8bit?q?wiatkowski_=3Ckfyatek+publicgit=40gmail=2Ecom=3E=2C_Phil_E?= =?unknown-8bit?q?lwell_=3Cphil=40raspberrypi=2Ecom=3E=2C_linux-arm-kernel?= =?unknown-8bit?q?=40lists=2Einfradead=2Eorg?= Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" If the name we want to parse has a length of zero, there's no need to compare it to the list of all the named modes we support, we can return straight away. Signed-off-by: Maxime Ripard diff --git a/drivers/gpu/drm/drm_modes.c b/drivers/gpu/drm/drm_modes.c index b1e800e4ed60..8d629fbb1047 100644 --- a/drivers/gpu/drm/drm_modes.c +++ b/drivers/gpu/drm/drm_modes.c @@ -2235,6 +2235,9 @@ static int drm_mode_parse_cmdline_named_mode(const char *name, { unsigned int i; + if (!name_end) + return 0; + /* * We're sure we're a named mode at that point, iterate over the * list of modes we're aware of.