linux-kernel - [PATCH 5.18 0774/1095] clk: qcom: gdsc: Bump parent usage count when GDSC is found enabled

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Date:   Mon, 15 Aug 2022 20:02:53 +0200
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Stephen Boyd <sboyd@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.18 0774/1095] clk: qcom: gdsc: Bump parent usage count when GDSC is found enabled

From: Bjorn Andersson <bjorn.andersson@...aro.org>

[ Upstream commit 41fff779d7948147f2440c4bb134cdf8b45b22d7 ]

When a GDSC is found to be enabled at boot the pm_runtime state will
be unbalanced as the GDSC is later turned off. Fix this by increasing
the usage counter on the power-domain, in line with how we handled the
regulator state.

Fixes: 1b771839de05 ("clk: qcom: gdsc: enable optional power domain support")
Signed-off-by: Bjorn Andersson <bjorn.andersson@...aro.org>
Acked-by: Stephen Boyd <sboyd@...nel.org>
Link: https://lore.kernel.org/r/20220713212818.130277-1-bjorn.andersson@linaro.org
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/clk/qcom/gdsc.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/clk/qcom/gdsc.c b/drivers/clk/qcom/gdsc.c
index 44520efc6c72..2db0938f8dd3 100644
--- a/drivers/clk/qcom/gdsc.c
+++ b/drivers/clk/qcom/gdsc.c
@@ -420,6 +420,14 @@ static int gdsc_init(struct gdsc *sc)
 				return ret;
 		}
 
+		/* ...and the power-domain */
+		ret = gdsc_pm_runtime_get(sc);
+		if (ret) {
+			if (sc->rsupply)
+				regulator_disable(sc->rsupply);
+			return ret;
+		}
+
 		/*
 		 * Votable GDSCs can be ON due to Vote from other masters.
 		 * If a Votable GDSC is ON, make sure we have a Vote.
-- 
2.35.1