[PATCH 5.10 565/663] media: marvell-ccic: power up the device on mclk enable

[Greg Kroah-Hartman]

From: Lubomir Rintel <lkundrak@xxxxx>

commit 655ae29da72a693cf294bba3c3322e662ff75bd3 upstream.

Writing to REG_CLKCTRL with the power off causes a hang. Enable the
device first.

Cc: stable@xxxxxxxxxxxxxxx # 5.10+
Signed-off-by: Lubomir Rintel <lkundrak@xxxxx>
Signed-off-by: Sakari Ailus <sakari.ailus@xxxxxxxxxxxxxxx>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/media/platform/marvell-ccic/mcam-core.c |    2 ++
 1 file changed, 2 insertions(+)

--- a/drivers/media/platform/marvell-ccic/mcam-core.c
+++ b/drivers/media/platform/marvell-ccic/mcam-core.c
@@ -931,6 +931,7 @@ static int mclk_enable(struct clk_hw *hw
 		mclk_div = 2;
 	}
 
+	pm_runtime_get_sync(cam->dev);
 	clk_enable(cam->clk[0]);
 	mcam_reg_write(cam, REG_CLKCTRL, (mclk_src << 29) | mclk_div);
 	mcam_ctlr_power_up(cam);
@@ -944,6 +945,7 @@ static void mclk_disable(struct clk_hw *
 
 	mcam_ctlr_power_down(cam);
 	clk_disable(cam->clk[0]);
+	pm_runtime_put(cam->dev);
 }
 
 static unsigned long mclk_recalc_rate(struct clk_hw *hw,