[PATCH] i2c: rk3x: enable clock before getting rate

[John Keeping]

clk_get_rate() is documented as requiring the clock to be enabled.
Ensure that the bus clock is enabled before calling clk_get_rate() in
rk3x_i2c_probe() to satisfy this requirement.

Signed-off-by: John Keeping <john at metanate.com>
---
 drivers/i2c/busses/i2c-rk3x.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/i2c/busses/i2c-rk3x.c b/drivers/i2c/busses/i2c-rk3x.c
index 819ab4ee517e..332755fab2a1 100644
--- a/drivers/i2c/busses/i2c-rk3x.c
+++ b/drivers/i2c/busses/i2c-rk3x.c
@@ -1338,8 +1338,15 @@ static int rk3x_i2c_probe(struct platform_device *pdev)
 		goto err_pclk;
 	}
 
+	ret = clk_enable(i2c->clk);
+	if (ret < 0) {
+		dev_err(&pdev->dev, "Can't enable bus clk: %d\n", ret);
+		goto err_clk_notifier;
+	}
+
 	clk_rate = clk_get_rate(i2c->clk);
 	rk3x_i2c_adapt_div(i2c, clk_rate);
+	clk_disable(i2c->clk);
 
 	ret = i2c_add_adapter(&i2c->adap);
 	if (ret < 0)
-- 
2.33.0