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Message-Id: <20190809215420.41874-1-yabinc@google.com>
Date:   Fri,  9 Aug 2019 14:54:20 -0700
From:   Yabin Cui <yabinc@...gle.com>
To:     Mathieu Poirier <mathieu.poirier@...aro.org>,
        Suzuki K Poulose <suzuki.poulose@....com>,
        Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc:     linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: 

From: Yabin Cui <yabinc@...gle.com>
Subject: Re: [PATCH] coresight: Serialize enabling/disabling a link device.

>You may also want to protect the refcount checks below with the same lock, just
>to be consistent.

Good suggestion! I didn't protect it because I found other places using refcnt.
But it turns out they are not link devices.
I have uploaded patch v2.