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i2c: stu300: use clk_prepare/unprepare 

Make sure we prepare/unprepare the clock for the ST U300
I2C driver as is required by the clk API especially if you
use common clock.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
This commit is contained in:
Linus Walleij 2012-06-12 19:33:30 +02:00 committed by Wolfram Sang
parent a55b44ac3f
commit a3f24c0dbd
1 changed files with 3 additions and 1 deletions
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4
drivers/i2c/busses/i2c-stu300.c
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@ -924,7 +924,7 @@ stu300_probe(struct platform_device *pdev)
dev->speed = scl_frequency;
clk_enable(dev->clk);
clk_prepare_enable(dev->clk);
ret = stu300_init_hw(dev);
clk_disable(dev->clk);
@ -960,6 +960,7 @@ stu300_probe(struct platform_device *pdev)
err_add_adapter:
err_init_hw:
clk_unprepare(dev->clk);
free_irq(dev->irq, dev);
err_no_irq:
iounmap(dev->virtbase);
@ -1016,6 +1017,7 @@ stu300_remove(struct platform_device *pdev)
free_irq(dev->irq, dev);
iounmap(dev->virtbase);
release_mem_region(dev->phybase, dev->physize);
clk_unprepare(dev->clk);
clk_put(dev->clk);
platform_set_drvdata(pdev, NULL);
kfree(dev);