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Wed, 20 Mar 2024 08:48:48 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=ideasonboard.com; s=mail; t=1710920928; bh=5C83c2ZTQtqAElrpx2RfgAHGISm99N4byeNo145Ivys=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=OardmIseA2AxJMuPuRoU2a5kBOFOuJIUhzg6XflLISoKsQSy0eGT4wa4wi4hd6W1Q BzFmjDaPNoHeUSOWt7li4P+2kZlXVmalfKtAJAkoSGxvh/5wfxovNdW+VFOpqix91B af73ZOmur2xeJ8DEJ2hTGvprQHLbgreNo+mi1nLA= Message-ID: <7aa16340-6a87-4110-8114-c1b863b100c9@ideasonboard.com> Date: Wed, 20 Mar 2024 09:49:12 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 8/8] drm: zynqmp_dp: Add debugfs interface for compliance testing Content-Language: en-US To: Sean Anderson Cc: Michal Simek , David Airlie , linux-kernel@vger.kernel.org, Daniel Vetter , linux-arm-kernel@lists.infradead.org, Laurent Pinchart , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , dri-devel@lists.freedesktop.org References: <20240319225122.3048400-1-sean.anderson@linux.dev> <20240319225122.3048400-9-sean.anderson@linux.dev> From: Tomi Valkeinen Autocrypt: addr=tomi.valkeinen@ideasonboard.com; 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charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 20/03/2024 00:51, Sean Anderson wrote: > +/** > + * enum test_pattern - Test patterns for test testing "for test testing"? =) > @@ -1655,6 +2321,9 @@ static void zynqmp_dp_hpd_irq_work_func(struct work_struct *work) > u8 status[DP_LINK_STATUS_SIZE + 2]; > int err; > > + if (READ_ONCE(dp->ignore_hpd)) > + return; > + > mutex_lock(&dp->lock); > err = drm_dp_dpcd_read(&dp->aux, DP_SINK_COUNT, status, > DP_LINK_STATUS_SIZE + 2); Why do you need READ/WRITE_ONCE() for ignore_hpd? Tomi