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 X-Spam-Level: X-Spam-Status: No, score=-19.4 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 09E39C43140 for ; Wed, 12 May 2021 16:07:26 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C558D61993 for ; Wed, 12 May 2021 16:07:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239286AbhELQHq (ORCPT ); Wed, 12 May 2021 12:07:46 -0400 Received: from mail.kernel.org ([198.145.29.99]:41008 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235636AbhELP2n (ORCPT ); Wed, 12 May 2021 11:28:43 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 5201961428; Wed, 12 May 2021 15:14:26 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1620832466; bh=8uauqwiDWuNi+46mhBTYhX9GY7Yd79pcyntj2cvcRzs=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=C72/bFuzRIMiWXEiHl3hwmJU5mNf1aU08MCRGvWD1awk572J6yHHXBdKRmwDqi31b Ax+mH3n3lSNUdnrUenOhVoPedNpIWCpg9OKy97QIFsDLNTdZG2kOrxcQ1EfgdWiOUw KTzlWBwicfurO7weUtSQr0NXWvQoSQ+9PqVTr84M= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Daniel Vetter , =?UTF-8?q?Noralf=20Tr=C3=B8nnes?= , Sasha Levin Subject: [PATCH 5.10 290/530] drm/probe-helper: Check epoch counter in output_poll_execute() Date: Wed, 12 May 2021 16:46:40 +0200 Message-Id: <20210512144829.338087430@linuxfoundation.org> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210512144819.664462530@linuxfoundation.org> References: <20210512144819.664462530@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Noralf Trønnes [ Upstream commit dc659a4e852b591771fc2e5abb60f4455b0cf316 ] drm_helper_hpd_irq_event() checks the epoch counter to determine connector status change. This was introduced in commit 5186421cbfe2 ("drm: Introduce epoch counter to drm_connector"). Do the same for output_poll_execute() so it can detect other changes beside connection status value changes. v2: - Add Fixes tag (Daniel) Fixes: 5186421cbfe2 ("drm: Introduce epoch counter to drm_connector") Reviewed-by: Daniel Vetter Signed-off-by: Noralf Trønnes Link: https://patchwork.freedesktop.org/patch/msgid/20210313112545.37527-3-noralf@tronnes.org Signed-off-by: Sasha Levin --- drivers/gpu/drm/drm_probe_helper.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_probe_helper.c b/drivers/gpu/drm/drm_probe_helper.c index d6017726cc2a..e5432dcf6999 100644 --- a/drivers/gpu/drm/drm_probe_helper.c +++ b/drivers/gpu/drm/drm_probe_helper.c @@ -623,6 +623,7 @@ static void output_poll_execute(struct work_struct *work) struct drm_connector_list_iter conn_iter; enum drm_connector_status old_status; bool repoll = false, changed; + u64 old_epoch_counter; if (!dev->mode_config.poll_enabled) return; @@ -659,8 +660,9 @@ static void output_poll_execute(struct work_struct *work) repoll = true; + old_epoch_counter = connector->epoch_counter; connector->status = drm_helper_probe_detect(connector, NULL, false); - if (old_status != connector->status) { + if (old_epoch_counter != connector->epoch_counter) { const char *old, *new; /* @@ -689,6 +691,9 @@ static void output_poll_execute(struct work_struct *work) connector->base.id, connector->name, old, new); + DRM_DEBUG_KMS("[CONNECTOR:%d:%s] epoch counter %llu -> %llu\n", + connector->base.id, connector->name, + old_epoch_counter, connector->epoch_counter); changed = true; } -- 2.30.2