Commit b57e9018 authored by John Keeping's avatar John Keeping Committed by Wolfram Sang
Browse files

i2c: rk3x: enable clock before getting rate 



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: default avatarJohn Keeping <john@metanate.com>
Reviewed-by: default avatarHeiko Stuebner <heiko@sntech.de>
Signed-off-by: default avatarWolfram Sang <wsa@kernel.org>
parent 41acd4b0

drivers/i2c/busses/i2c-rk3x.c

+7 −0
Original line number Diff line number Diff line
@@ -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)