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 545D8D6E2A8 for ; Thu, 18 Dec 2025 15:35:40 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0EF9710EA1C; Thu, 18 Dec 2025 15:35:40 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="QE297iEC"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 09B0310EA17 for ; Thu, 18 Dec 2025 15:35:32 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1766072132; x=1797608132; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=kuIsgPSbNi58n1UQO8VAy8kFOCXPlax4rwS1/CPsvQQ=; b=QE297iECvD/jS/aRY2a4KV/aeR1oBSsz24azzP4KnXQ0rIhzsN3QLRj2 azX6gVkcqRxv3nRTow3Mcz3F0L5CsmQ7rGkOlQT4zHgiFw37Zr+3jV107 UkIb4Xa6kU4ujHkgVph5fhvaB5xkTQxLjOT8eVdryK20eY6edUJktQmaJ rkaXrRy4kBCd8CWCOgJRYrdTEt4RdgjxZmZ651SiV0us7qPr1UsPmp7n1 S8/6+Ig4rAbChzz/j22qH1h9Vd1hTAQEurVZ3ZVTE+7rP1QBo4K1I1ApU WFIkxeCVUCWn0FdIX6DTKZLd/LAwSbMWdrHFXyuF9ghN8EGKkk+AFSt4x Q==; X-CSE-ConnectionGUID: B9085jZyQ1OfWF0MkTYqJQ== X-CSE-MsgGUID: cr4eu90iTzCPj5XGrDFdgg== X-IronPort-AV: E=McAfee;i="6800,10657,11646"; a="67906276" X-IronPort-AV: E=Sophos;i="6.21,158,1763452800"; d="scan'208";a="67906276" Received: from orviesa001.jf.intel.com ([10.64.159.141]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Dec 2025 07:35:31 -0800 X-CSE-ConnectionGUID: 2eNQOboIQUGMYK9vssmIYg== X-CSE-MsgGUID: WeKM7pKhT9KUI/UOvxQKzA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,158,1763452800"; d="scan'208";a="236042233" Received: from dut4086lnl.fm.intel.com ([10.105.10.207]) by smtpauth.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Dec 2025 07:35:31 -0800 From: Jonathan Cavitt To: intel-xe@lists.freedesktop.org Cc: saurabhg.gupta@intel.com, alex.zuo@intel.com, jonathan.cavitt@intel.com, matthew.brost@intel.com, daniele.ceraolospurio@intel.com, rodrigo.vivi@intel.com, michal.wajdeczko@intel.com Subject: [PATCH 5/6] drm/xe/xe_guc_ct: READ_ONCE ct state in xe_guc_ct_enabled Date: Thu, 18 Dec 2025 15:35:33 +0000 Message-ID: <20251218153527.6436-13-jonathan.cavitt@intel.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20251218153527.6436-8-jonathan.cavitt@intel.com> References: <20251218153527.6436-8-jonathan.cavitt@intel.com> 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" Use READ_ONCE when reading ct->state in xe_guc_ct_enabled to prevent the compiler from ignoring this operation. Fixes: dc75d03716fe ("drm/xe/guc: Add more GuC CT states") Suggested-by: Matthew Brost Signed-off-by: Jonathan Cavitt Cc: Rodrigo Vivi Cc: Michal Wajdeczko --- drivers/gpu/drm/xe/xe_guc_ct.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/xe/xe_guc_ct.h b/drivers/gpu/drm/xe/xe_guc_ct.h index d4c9cb4dbcb5..cb1335f1d66f 100644 --- a/drivers/gpu/drm/xe/xe_guc_ct.h +++ b/drivers/gpu/drm/xe/xe_guc_ct.h @@ -35,7 +35,7 @@ static inline bool xe_guc_ct_initialized(struct xe_guc_ct *ct) static inline bool xe_guc_ct_enabled(struct xe_guc_ct *ct) { - return ct->state == XE_GUC_CT_STATE_ENABLED; + return READ_ONCE(ct->state) == XE_GUC_CT_STATE_ENABLED; } static inline void xe_guc_ct_irq_handler(struct xe_guc_ct *ct) -- 2.43.0