diff options
| author | John Keeping <john@metanate.com> | 2021-10-04 14:15:39 +0100 |
|---|---|---|
| committer | Wolfram Sang <wsa@kernel.org> | 2021-11-29 10:38:36 +0100 |
| commit | b57e90189f208e8e873f532b797f8b649973f7a2 (patch) | |
| tree | 108d8e12473027875559735b5b9e9e04f912feca | |
| parent | 41acd4b03ca9ba9c9a3ab993817112d9b9f7cf44 (diff) | |
| download | linux-b57e90189f208e8e873f532b797f8b649973f7a2.tar.bz2 | |
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: John Keeping <john@metanate.com>
Reviewed-by: Heiko Stuebner <heiko@sntech.de>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
| -rw-r--r-- | drivers/i2c/busses/i2c-rk3x.c | 7 |
1 files changed, 7 insertions, 0 deletions
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) |