From patchwork Thu Dec 8 11:12:16 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Andrzej Hajda X-Patchwork-Id: 13068285 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 44EF7C4332F for ; Thu, 8 Dec 2022 11:12:56 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 35FF410E495; Thu, 8 Dec 2022 11:12:47 +0000 (UTC) Received: from mga03.intel.com (mga03.intel.com [134.134.136.65]) by gabe.freedesktop.org (Postfix) with ESMTPS id B630F10E1C1 for ; Thu, 8 Dec 2022 11:12:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1670497960; x=1702033960; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=VOuyOOFWmqIaImkqyG7tStWRhT/Xn60ny9jd8hFCbA4=; b=VArtfPAfNsCUBc14FtFNS7CPKR4vm4mKY3UOZ8BwQfb1ATSPCtVo6Hgg D6oxKIcscN9C4qeLp+mZg70S1BUU4LCCFk7CPY/Xcn6jmHXT/kKy70Cdx gXfjQSEaYBpf8TBjONBtCnr5nGLoVWAOJBXPFoyje6bUfDNe7t98JqMDc 3G5H2VcwqDrTmxwEgMCgHKtPu08Di4FWjpzTRq4xlA2LAF9m2POXksr+Y OVrshPlzlAvzAoufh9PSiPqVcJ85o7H+YgpeGvjdYR15fh5sXihclgtAH 7Sps58d8kL69VRpdhZDnVttehCV7+LKlMoB5HYmFsZg/2MwIeiI6FaKI7 Q==; X-IronPort-AV: E=McAfee;i="6500,9779,10554"; a="318995977" X-IronPort-AV: E=Sophos;i="5.96,227,1665471600"; d="scan'208";a="318995977" Received: from fmsmga008.fm.intel.com ([10.253.24.58]) by orsmga103.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2022 03:12:39 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10554"; a="710426055" X-IronPort-AV: E=Sophos;i="5.96,227,1665471600"; d="scan'208";a="710426055" Received: from lab-ah.igk.intel.com ([10.91.215.196]) by fmsmga008-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Dec 2022 03:12:37 -0800 From: Andrzej Hajda To: intel-gfx@lists.freedesktop.org Date: Thu, 8 Dec 2022 12:12:16 +0100 Message-Id: <20221208111217.3734461-1-andrzej.hajda@intel.com> X-Mailer: git-send-email 2.34.1 MIME-Version: 1.0 Organization: Intel Technology Poland sp. z o.o. - ul. Slowackiego 173, 80-298 Gdansk - KRS 101882 - NIP 957-07-52-316 Subject: [Intel-gfx] [PATCH 1/2] drm/i915/display: use fetch_and_zero if applicable 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: , Cc: Andrzej Hajda , Rodrigo Vivi Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Simplify the code. Signed-off-by: Andrzej Hajda --- drivers/gpu/drm/i915/display/intel_hotplug.c | 12 ++++-------- 1 file changed, 4 insertions(+), 8 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_hotplug.c b/drivers/gpu/drm/i915/display/intel_hotplug.c index 907ab7526cb478..2972d7533da44e 100644 --- a/drivers/gpu/drm/i915/display/intel_hotplug.c +++ b/drivers/gpu/drm/i915/display/intel_hotplug.c @@ -304,10 +304,8 @@ static void i915_digport_work_func(struct work_struct *work) u32 old_bits = 0; spin_lock_irq(&dev_priv->irq_lock); - long_port_mask = dev_priv->display.hotplug.long_port_mask; - dev_priv->display.hotplug.long_port_mask = 0; - short_port_mask = dev_priv->display.hotplug.short_port_mask; - dev_priv->display.hotplug.short_port_mask = 0; + long_port_mask = fetch_and_zero(&dev_priv->display.hotplug.long_port_mask); + short_port_mask = fetch_and_zero(&dev_priv->display.hotplug.short_port_mask); spin_unlock_irq(&dev_priv->irq_lock); for_each_intel_encoder(&dev_priv->drm, encoder) { @@ -379,10 +377,8 @@ static void i915_hotplug_work_func(struct work_struct *work) spin_lock_irq(&dev_priv->irq_lock); - hpd_event_bits = dev_priv->display.hotplug.event_bits; - dev_priv->display.hotplug.event_bits = 0; - hpd_retry_bits = dev_priv->display.hotplug.retry_bits; - dev_priv->display.hotplug.retry_bits = 0; + hpd_event_bits = fetch_and_zero(&dev_priv->display.hotplug.event_bits); + hpd_retry_bits = fetch_and_zero(&dev_priv->display.hotplug.retry_bits); /* Enable polling for connectors which had HPD IRQ storms */ intel_hpd_irq_storm_switch_to_polling(dev_priv);