From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 112661094465 for ; Sat, 21 Mar 2026 09:28:19 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 12BC710E185; Sat, 21 Mar 2026 09:28:19 +0000 (UTC) Received: from cstnet.cn (smtp21.cstnet.cn [159.226.251.21]) by gabe.freedesktop.org (Postfix) with ESMTPS id 632C110E185 for ; Sat, 21 Mar 2026 09:28:15 +0000 (UTC) Received: from edelgard.fodlan.icenowy.me (unknown [112.94.102.202]) by APP-01 (Coremail) with SMTP id qwCowAB3IW2oZL5pbtSyCg--.10772S2; Sat, 21 Mar 2026 17:28:09 +0800 (CST) From: Icenowy Zheng To: Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Jianmin Lv , Qianhai Wu , Huacai Chen , Mingcong Bai , Xi Ruoyao Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, Icenowy Zheng Subject: [PATCH v2] drm/loongson: stop to set get_vblank_timestamp for LS7A1000 CRTC Date: Sat, 21 Mar 2026 17:28:04 +0800 Message-ID: <20260321092804.3519447-1-zhengxingda@iscas.ac.cn> X-Mailer: git-send-email 2.52.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CM-TRANSID: qwCowAB3IW2oZL5pbtSyCg--.10772S2 X-Coremail-Antispam: 1UD129KBjvJXoW7ZFy5JF48AF4DWr15Kr1kAFb_yoW8Gr1fpF srCF1xtrWkXFWSywnxJF109a1ruay5Jr929ay2kw13uw45Cr1UCF18AF47uw17XF9rX3yI grn7KF4YkF4I93JanT9S1TB71UUUUU7qnTZGkaVYY2UrUUUUjbIjqfuFe4nvWSU5nxnvy2 9KBjDU0xBIdaVrnRJUUU9a14x267AKxVW8JVW5JwAFc2x0x2IEx4CE42xK8VAvwI8IcIk0 rVWrJVCq3wAFIxvE14AKwVWUJVWUGwA2ocxC64kIII0Yj41l84x0c7CEw4AK67xGY2AK02 1l84ACjcxK6xIIjxv20xvE14v26ryj6F1UM28EF7xvwVC0I7IYx2IY6xkF7I0E14v26r4U JVWxJr1l84ACjcxK6I8E87Iv67AKxVWxJr0_GcWl84ACjcxK6I8E87Iv6xkF7I0E14v26r xl6s0DM2AIxVAIcxkEcVAq07x20xvEncxIr21l5I8CrVACY4xI64kE6c02F40Ex7xfMcIj 6xIIjxv20xvE14v26r106r15McIj6I8E87Iv67AKxVWUJVW8JwAm72CE4IkC6x0Yz7v_Jr 0_Gr1lF7xvr2IYc2Ij64vIr41lF7I21c0EjII2zVCS5cI20VAGYxC7M4IIrI8v6xkF7I0E 8cxan2IY04v7MxkF7I0En4kS14v26r1q6r43MxAIw28IcxkI7VAKI48JMxC20s026xCaFV Cjc4AY6r1j6r4UMI8I3I0E5I8CrVAFwI0_Jr0_Jr4lx2IqxVCjr7xvwVAFwI0_JrI_JrWl x4CE17CEb7AF67AKxVWUtVW8ZwCIc40Y0x0EwIxGrwCI42IY6xIIjxv20xvE14v26r1I6r 4UMIIF0xvE2Ix0cI8IcVCY1x0267AKxVW8Jr0_Cr1UMIIF0xvE42xK8VAvwI8IcIk0rVWU JVWUCwCI42IY6I8E87Iv67AKxVWUJVW8JwCI42IY6I8E87Iv6xkF7I0E14v26r4UJVWxJr UvcSsGvfC2KfnxnUUI43ZEXa7VU13ku3UUUUU== X-Originating-IP: [112.94.102.202] X-CM-SenderInfo: x2kh0wp0lqwv3d6l2u1dvotugofq/ 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: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" As there's no known hardware capability about querying vblank on the LS7A1000 display controller, setting get_vblank_timestamp will mislead the kernel about the support of DC-backed high precision vblank query. Drop this function pointer in the CRTC function table for LS7A1000. This solves a kernel warning when booting Linux 7.0-rc3 on a Loongson-3A4000+LS7A1000 Haier Boyue G51 laptop (with injected EDID for replicating the display timing set by the firmware). Signed-off-by: Icenowy Zheng --- Changes in v2: - Re-formatted Loongson product model numbers per request from Huacai. drivers/gpu/drm/loongson/lsdc_crtc.c | 1 - 1 file changed, 1 deletion(-) diff --git a/drivers/gpu/drm/loongson/lsdc_crtc.c b/drivers/gpu/drm/loongson/lsdc_crtc.c index 587fbe285e9ef..b3af8e0cdb15f 100644 --- a/drivers/gpu/drm/loongson/lsdc_crtc.c +++ b/drivers/gpu/drm/loongson/lsdc_crtc.c @@ -721,7 +721,6 @@ static const struct drm_crtc_funcs ls7a1000_crtc_funcs = { .late_register = lsdc_crtc_late_register, .enable_vblank = lsdc_crtc_enable_vblank, .disable_vblank = lsdc_crtc_disable_vblank, - .get_vblank_timestamp = drm_crtc_vblank_helper_get_vblank_timestamp, .atomic_print_state = lsdc_crtc_atomic_print_state, }; -- 2.52.0