@@ -792,26 +792,22 @@ static int jz4780_i2c_probe(struct platform_device *pdev)
platform_set_drvdata(pdev, i2c);
- i2c->clk = devm_clk_get(&pdev->dev, NULL);
+ i2c->clk = devm_clk_get_enabled(&pdev->dev, NULL);
if (IS_ERR(i2c->clk))
return PTR_ERR(i2c->clk);
- ret = clk_prepare_enable(i2c->clk);
- if (ret)
- return ret;
-
ret = of_property_read_u32(pdev->dev.of_node, "clock-frequency",
&clk_freq);
if (ret) {
dev_err(&pdev->dev, "clock-frequency not specified in DT\n");
- goto err;
+ return ret;
}
i2c->speed = clk_freq / 1000;
if (i2c->speed == 0) {
ret = -EINVAL;
dev_err(&pdev->dev, "clock-frequency minimum is 1000\n");
- goto err;
+ return ret;
}
jz4780_i2c_set_speed(i2c);
@@ -827,29 +823,25 @@ static int jz4780_i2c_probe(struct platform_device *pdev)
ret = platform_get_irq(pdev, 0);
if (ret < 0)
- goto err;
+ return ret;
i2c->irq = ret;
+
ret = devm_request_irq(&pdev->dev, i2c->irq, jz4780_i2c_irq, 0,
dev_name(&pdev->dev), i2c);
if (ret)
- goto err;
+ return ret;
ret = i2c_add_adapter(&i2c->adap);
if (ret < 0)
- goto err;
+ return ret;
return 0;
-
-err:
- clk_disable_unprepare(i2c->clk);
- return ret;
}
static void jz4780_i2c_remove(struct platform_device *pdev)
{
struct jz4780_i2c *i2c = platform_get_drvdata(pdev);
- clk_disable_unprepare(i2c->clk);
i2c_del_adapter(&i2c->adap);
}
The devm_clk_get_enabled() helpers: - call devm_clk_get() - call clk_prepare_enable() and register what is needed in order to call clk_disable_unprepare() when needed, as a managed resource. This simplifies the code and avoids the calls to clk_disable_unprepare(). While at it, no more special handling needed here, remove the goto label "err:". Signed-off-by: Rong Qianfeng <rongqianfeng@vivo.com> Acked-by: Paul Cercueil <paul@crapouillou.net> --- drivers/i2c/busses/i2c-jz4780.c | 22 +++++++--------------- 1 file changed, 7 insertions(+), 15 deletions(-)