linux-kernel - [PATCH 5.16 133/186] soc: imx: gpcv2: Fix clock disabling imbalance in error path

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Date:   Mon,  7 Mar 2022 10:19:31 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Laurent Pinchart <laurent.pinchart@...asonboard.com>,
        Lucas Stach <l.stach@...gutronix.de>,
        Shawn Guo <shawnguo@...nel.org>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 5.16 133/186] soc: imx: gpcv2: Fix clock disabling imbalance in error path

From: Laurent Pinchart <laurent.pinchart@...asonboard.com>

[ Upstream commit fa231bef3b34f1670b240409c11e59a3ce095e6d ]

The imx_pgc_power_down() starts by enabling the domain clocks, and thus
disables them in the error path. Commit 18c98573a4cf ("soc: imx: gpcv2:
add domain option to keep domain clocks enabled") made the clock enable
conditional, but forgot to add the same condition to the error path.
This can result in a clock enable/disable imbalance. Fix it.

Fixes: 18c98573a4cf ("soc: imx: gpcv2: add domain option to keep domain clocks enabled")
Signed-off-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
Reviewed-by: Lucas Stach <l.stach@...gutronix.de>
Signed-off-by: Shawn Guo <shawnguo@...nel.org>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/soc/imx/gpcv2.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/imx/gpcv2.c b/drivers/soc/imx/gpcv2.c
index 8176380b02e6..4415f07e1fa9 100644
--- a/drivers/soc/imx/gpcv2.c
+++ b/drivers/soc/imx/gpcv2.c
@@ -382,7 +382,8 @@ static int imx_pgc_power_down(struct generic_pm_domain *genpd)
 	return 0;
 
 out_clk_disable:
-	clk_bulk_disable_unprepare(domain->num_clks, domain->clks);
+	if (!domain->keep_clocks)
+		clk_bulk_disable_unprepare(domain->num_clks, domain->clks);
 
 	return ret;
 }
-- 
2.34.1