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 0C176C44503 for ; Thu, 2 Jul 2026 07:21:41 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id E211110F1AE; Thu, 2 Jul 2026 07:21:32 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=lankhorst.se header.i=@lankhorst.se header.b="SLcAOM3P"; dkim-atps=neutral Received: from lankhorst.se (unknown [141.105.120.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4950F10F19B; Thu, 2 Jul 2026 07:21:29 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=lankhorst.se; s=default; t=1782976888; bh=07jvFRigIF4c2WP1/tQ0UqgvxYpJAG8Jfl5912+WIUE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=SLcAOM3PeRwzF8kEkn2gHpRP/dEC4LbMd+fYrkY8s5DYdQlrLLg3TTG9H/bomGeMN d9fY5bNSzLQMLTX72DODFHOyacGLQrX+hwiNLTTVXnGsv+FqQT9RLlpRs9GDZ+hgRH XgrFNY8ggjx3p1Vh/BSIdJ04x4PCj7N/nE6giJWPI682Yi0lWiTsew3ETObWKv9Sp3 aXlK5vj/ZgV4eQJEGUX3Qc51LehAc/x7AKT1ip32pF9to+EAW6YQgQr4Uw5/Vy+Q76 2Y+QABzSQuc8IbxSa5TMtYfBJVJISIrThOeKNXxIaDOuYv2zQ0OoaoG294mBOG6yop DnnQDSOlHCrtQ== From: Maarten Lankhorst To: intel-xe@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org, Maarten Lankhorst Subject: [PATCH 09/10] drm/i915/display: Make get_vblank_counter use intel_de_read_fw() Date: Thu, 2 Jul 2026 09:21:52 +0200 Message-ID: <20260702072154.171324-10-dev@lankhorst.se> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260702072154.171324-1-dev@lankhorst.se> References: <20260702072154.171324-1-dev@lankhorst.se> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Fixes the following lockdep splat on PREEMPT_RT: <3> BUG: sleeping function called from invalid context at kernel/locking/spinlock_rt.c:48 <3> in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 1373, name: xe_module_load <3> preempt_count: 1, expected: 0 <3> RCU nest depth: 0, expected: 0 <4> 11 locks held by xe_module_load/1373: <4> #0: ffff888107b691a0 (&dev->mutex){....}-{3:3}, at: __driver_attach+0x104/0x220 <4> #1: ffff88813cd30280 (&dev->clientlist_mutex){+.+.}-{3:3}, at: drm_client_register+0x32/0xe0 <4> #2: ffffffff837f88f8 (registration_lock){+.+.}-{3:3}, at: register_framebuffer+0x1b/0x50 <4> #3: ffffffff835985e0 (console_lock){+.+.}-{0:0}, at: fbcon_fb_registered+0x6f/0x90 <4> #4: ffff88812589e6a0 (&helper->lock){+.+.}-{3:3}, at: __drm_fb_helper_restore_fbdev_mode_unlocked+0x7b/0x110 <4> #5: ffff88813cd30158 (&dev->master_mutex){+.+.}-{3:3}, at: drm_master_internal_acquire+0x20/0x50 <4> #6: ffff88812589e488 (&client->modeset_mutex){+.+.}-{3:3}, at: drm_client_modeset_commit_locked+0x2a/0x1b0 <4> #7: ffffc9000031eef0 (crtc_ww_class_acquire){+.+.}-{0:0}, at: drm_client_modeset_commit_atomic+0x4c/0x2b0 <4> #8: ffffc9000031ef18 (crtc_ww_class_mutex){+.+.}-{3:3}, at: drm_client_modeset_commit_atomic+0x4c/0x2b0 <4> #9: ffff888114f7b8b8 (&intel_dp->psr.lock){+.+.}-{3:3}, at: intel_psr_lock+0xc5/0xf0 [xe] <4> #10: ffff88812a0cbbc0 (&wl->lock){+.+.}-{2:2}, at: intel_dmc_wl_get+0x3c/0x140 [xe] This splat will happen otherwise on all tracepoints too, for similar reasons. Signed-off-by: Maarten Lankhorst --- drivers/gpu/drm/i915/display/intel_vblank.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_vblank.c b/drivers/gpu/drm/i915/display/intel_vblank.c index 07dca05332e5b..c0cc0a4c25dbe 100644 --- a/drivers/gpu/drm/i915/display/intel_vblank.c +++ b/drivers/gpu/drm/i915/display/intel_vblank.c @@ -132,7 +132,7 @@ u32 g4x_get_vblank_counter(struct drm_crtc *crtc) if (!vblank->max_vblank_count) return 0; - return intel_de_read(display, PIPE_FRMCOUNT_G4X(display, pipe)); + return intel_de_read_fw(display, PIPE_FRMCOUNT_G4X(display, pipe)); } static u32 intel_crtc_scanlines_since_frame_timestamp(struct intel_crtc *crtc) -- 2.53.0