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X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ALSA development , Jimmy Cheng-Yi Chiang , David Airlie , dri-devel@lists.freedesktop.org, Mark Brown , linux-mediatek@lists.infradead.org, Daniel Vetter , Matthias Brugger , p.zabel@pengutronix.de, Dylan Reid , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org On Thu, Feb 13, 2020 at 9:57 AM CK Hu wrote: > I'm not only consider the race condition of plugged_cb and codec_dev. I > also care about the atomic of mtk_cec_hpd_high() and hdmi->plugged_cb(). > If these two function is not an atomic operation, below is an example of > problem: > > > 1. Thread A call mtk_hdmi_audio_hook_plugged_cb() > 2. Thread A call mtk_cec_hpd_high() and get disconnected. > > 3. Thread B call hdmi_conn_detect() > 4. Thread B call mtk_cec_hpd_high() and get connected > 5. Thread B callback plugged_cb() with connected > 6. Thread A callback plugged_cb() with disconnected (Bug here) Another attempt: https://patchwork.kernel.org/patch/11379979/ _______________________________________________ Linux-mediatek mailing list Linux-mediatek@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-mediatek