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From:   Chen-Yu Tsai <wenst@chromium.org>
To:     Michael Turquette <mturquette@baylibre.com>,
        Stephen Boyd <sboyd@kernel.org>
Cc:     Chen-Yu Tsai <wenst@chromium.org>, linux-clk@vger.kernel.org,
        linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@collabora.com>,
        =?UTF-8?q?N=C3=ADcolas=20F=2E=20R=2E=20A=2E=20Prado?= 
        <nfraprado@collabora.com>
Subject: [PATCH 2/2] clk: core: Fix runtime PM sequence in clk_core_unprepare()
Date:   Tue, 12 Jul 2022 19:34:02 +0800
Message-Id: <20220712113402.871838-3-wenst@chromium.org>
In-Reply-To: <20220712113402.871838-1-wenst@chromium.org>
References: <20220712113402.871838-1-wenst@chromium.org>
MIME-Version: 1.0
Content-Transfer-Encoding: 8bit
Precedence: bulk

In the original commit 9a34b45397e5 ("clk: Add support for runtime PM"),
the commit message mentioned that pm_runtime_put_sync() would be done
at the end of clk_core_unprepare(). This mirrors the operations in
clk_core_prepare() in the opposite order.

However, the actual code that was added wasn't in the order the commit
message described. Move clk_pm_runtime_put() to the end of
clk_core_unprepare() so that it is in the correct order.

Fixes: 9a34b45397e5 ("clk: Add support for runtime PM")
Signed-off-by: Chen-Yu Tsai <wenst@chromium.org>
---
 drivers/clk/clk.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
index b3de636eec84..87684daadedd 100644
--- a/drivers/clk/clk.c
+++ b/drivers/clk/clk.c
@@ -855,13 +855,12 @@ static void clk_core_unprepare(struct clk_core *core)
 	if (core->ops->unprepare)
 		core->ops->unprepare(core->hw);
 
-	clk_pm_runtime_put(core);
-
 	trace_clk_unprepare_complete(core);
 
 	if (core->flags & CLK_OPS_PARENT_ENABLE)
 		clk_core_disable(core->parent);
 	clk_core_unprepare(core->parent);
+	clk_pm_runtime_put(core);
 }
 
 static void clk_core_unprepare_lock(struct clk_core *core)
-- 
2.37.0.144.g8ac04bfd2-goog