From patchwork Mon Jul 22 06:44:48 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kandpal, Suraj" X-Patchwork-Id: 13738343 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 8D616C3DA5D for ; Mon, 22 Jul 2024 06:47:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 0D31210E377; Mon, 22 Jul 2024 06:47:22 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="C/Coe7P9"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.18]) by gabe.freedesktop.org (Postfix) with ESMTPS id 93C5310E377; Mon, 22 Jul 2024 06:47:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1721630839; x=1753166839; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=BoqNOeXr5Yv/EcVCOCdOuxKlVYPeo61A5ROSFXiTiQ4=; b=C/Coe7P9tfTINY+0S5C2+e9qfKFXqf9DixuCIOYbviYLa0URiB7kCzyB a2Tiooe16vWyEL0u4qfXetYE8S1vN/cROYaGHk6ZuQ5XIMP/nYayhLJ8U RIOimUgO6gPJF24wmaIJkVKzLx5EJyu2HrMD//GCwQMT88KA8rwDcCqfi zIQoqoWBzARRSisUVl0zX0UR6hH1Ve+A/dLKRB0L0aVgkkgHXf/3i5EYN bIu6+irkbYvNHZtr2sXlHl/fh7Hm99WbVqXz0yv601LMrNnR10GXaATFw G4E3VJ4TCMwpRv02tDCWZCgmxJMBurLl5TlIiJ2t8lumJ4iKRN18j0eSA w==; X-CSE-ConnectionGUID: QYc9SWhsTkqQr+dGwaHoZg== X-CSE-MsgGUID: n2beYeaRQsCLv+OB8+AaEQ== X-IronPort-AV: E=McAfee;i="6700,10204,11140"; a="18798180" X-IronPort-AV: E=Sophos;i="6.09,227,1716274800"; d="scan'208";a="18798180" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by fmvoesa112.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Jul 2024 23:47:18 -0700 X-CSE-ConnectionGUID: NsSalQfSQAyme38JBENLHQ== X-CSE-MsgGUID: 6J7s2dWeRym++inQ9NzfFQ== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.09,227,1716274800"; d="scan'208";a="51670535" Received: from kandpal-x299-ud4-pro.iind.intel.com ([10.190.239.32]) by fmviesa008.fm.intel.com with ESMTP; 21 Jul 2024 23:47:16 -0700 From: Suraj Kandpal To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: ankit.k.nautiyal@intel.com, Suraj Kandpal Subject: [PATCH 0/2] Fix null pointer error in HDCP capability check Date: Mon, 22 Jul 2024 12:14:48 +0530 Message-ID: <20240722064451.3610512-1-suraj.kandpal@intel.com> X-Mailer: git-send-email 2.43.2 MIME-Version: 1.0 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" During suspend/resume or plug/unplug scenarios encoder and gsc are not initialized. This patch series adds checks to make sure we don't run into a null pointer error. Signed-off-by: Suraj Kandpal Suraj Kandpal (3): drm/i915/hdcp: Add encoder check in intel_hdcp_get_capability drm/i915/hdcp: Add encoder check in hdcp2_get_capability drm/xe/hdcp: Check GSC structure validity drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 11 +++++++++-- drivers/gpu/drm/i915/display/intel_hdcp.c | 7 ++++++- drivers/gpu/drm/xe/display/xe_hdcp_gsc.c | 8 ++++++-- 3 files changed, 21 insertions(+), 5 deletions(-)