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>
diff --git a/drivers/i2c/busses/i2c-stu300.c b/drivers/i2c/busses/i2c-stu300.c
index 4d44af1..79b7851 100644
--- a/drivers/i2c/busses/i2c-stu300.c
+++ b/drivers/i2c/busses/i2c-stu300.c
@@ -924,7 +924,7 @@
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 @@
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 @@
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);