From patchwork Mon Aug 12 14:28:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 13760680 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 26DEAC3DA7F for ; Mon, 12 Aug 2024 14:28:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 445EC10E23F; Mon, 12 Aug 2024 14:28:58 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="dIhQ1niQ"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id D64DA10E23D; Mon, 12 Aug 2024 14:28:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1723472937; x=1755008937; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=8Sw9BHCDm18clVr1kpmcqd55zlV5cTU9U5Lb+EunLPg=; b=dIhQ1niQ5szGTpDLW/QO7jrtq/5TxKgdOkJFsWBGSMPvhQIACG/47Ddh /iT25C6EaVqgflxau3eaF6PTJ1EyrLoeNjN5QyC0KqAHBOCwm/BWzwAJr vySFfrcwpiLrX4lMQJVveKDWox+qw5zUQVOavuO/IR77/WtHGH/CUS3ki o60fhZRt80wGvv01wxFcDDce9sh8PxH2fov3r2J5gFjDJxjnJP0QmMcnC TOT7qCdg0pB1zaIN+YMO2jr/b2TmyI9Ce7Oy1NJ0MBTftuXF/P66aY6Jm GJGKIFOFeXFUHWQ0j94Lj47THypkhjmBJrpk+CGuq9/uyKW5V5QyCe1KE Q==; X-CSE-ConnectionGUID: Nej5PIWdSK6HUHGJLuUS+A== X-CSE-MsgGUID: gN8WLSkyTGOLE6W9EX9r7w== X-IronPort-AV: E=McAfee;i="6700,10204,11162"; a="32737593" X-IronPort-AV: E=Sophos;i="6.09,283,1716274800"; d="scan'208";a="32737593" Received: from fmviesa002.fm.intel.com ([10.60.135.142]) by orvoesa105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2024 07:28:57 -0700 X-CSE-ConnectionGUID: UZrmJdAwRHaJdl2DwBpEGQ== X-CSE-MsgGUID: 61qaJ062THuNbSQS5Ilv0w== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,283,1716274800"; d="scan'208";a="81521670" Received: from iklimasz-mobl1.ger.corp.intel.com (HELO localhost) ([10.245.246.117]) by fmviesa002-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 12 Aug 2024 07:28:53 -0700 From: Jani Nikula To: dri-devel@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org, Jani Nikula , Zhi Wang , Zhenyu Wang , Zhi Wang , intel-gvt-dev@lists.freedesktop.org Subject: [RESEND 1/2] drm/i915/gvt: stop using drm_edid_block_valid() Date: Mon, 12 Aug 2024 17:28:48 +0300 Message-Id: <20240812142849.1588006-1-jani.nikula@intel.com> X-Mailer: git-send-email 2.39.2 MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo 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" We'll want to stop drm_edid_block_valid() usage. KVMGT is the last user. Replace with drm_edid_valid(), which unfortunately requires an allocated drm_edid. However, on the plus side, this would be required to handle the TODO comment about EDID extension block support. Acked-by: Zhi Wang Signed-off-by: Jani Nikula Reviewed-by: Zhenyu Wang --- Cc: Zhenyu Wang Cc: Zhi Wang Cc: intel-gvt-dev@lists.freedesktop.org Cc: intel-gfx@lists.freedesktop.org Cc: dri-devel@lists.freedesktop.org --- drivers/gpu/drm/i915/gvt/kvmgt.c | 18 +++++++++++++----- 1 file changed, 13 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/i915/gvt/kvmgt.c b/drivers/gpu/drm/i915/gvt/kvmgt.c index 38830818c120..ca0fb126b02d 100644 --- a/drivers/gpu/drm/i915/gvt/kvmgt.c +++ b/drivers/gpu/drm/i915/gvt/kvmgt.c @@ -425,6 +425,18 @@ static const struct intel_vgpu_regops intel_vgpu_regops_opregion = { .release = intel_vgpu_reg_release_opregion, }; +static bool edid_valid(const void *edid, size_t size) +{ + const struct drm_edid *drm_edid; + bool is_valid; + + drm_edid = drm_edid_alloc(edid, size); + is_valid = drm_edid_valid(drm_edid); + drm_edid_free(drm_edid); + + return is_valid; +} + static int handle_edid_regs(struct intel_vgpu *vgpu, struct vfio_edid_region *region, char *buf, size_t count, u16 offset, bool is_write) @@ -443,11 +455,7 @@ static int handle_edid_regs(struct intel_vgpu *vgpu, switch (offset) { case offsetof(struct vfio_region_gfx_edid, link_state): if (data == VFIO_DEVICE_GFX_LINK_STATE_UP) { - if (!drm_edid_block_valid( - (u8 *)region->edid_blob, - 0, - true, - NULL)) { + if (!edid_valid(region->edid_blob, EDID_SIZE)) { gvt_vgpu_err("invalid EDID blob\n"); return -EINVAL; }