Use devm_* functions to simplify code and error handling.
Cc: Alessandro Rubini <rub...@unipv.it>
Cc: Linus Walleij <linus.wall...@linaro.org>
Cc: Wolfram Sang <w...@the-dreams.de>
Signed-off-by: Ulf Hansson <ulf.hans...@linaro.org>
---
Changes in v2:
Rebased on top of latest i2c-nomadik branch.
---
drivers/i2c/busses/i2c-nomadik.c | 29 +++++++++--------------------
1 file changed, 9 insertions(+), 20 deletions(-)
diff --git a/drivers/i2c/busses/i2c-nomadik.c b/drivers/i2c/busses/i2c-nomadik.c
index bc8ba02..5faf9e2 100644
--- a/drivers/i2c/busses/i2c-nomadik.c
+++ b/drivers/i2c/busses/i2c-nomadik.c
@@ -981,7 +981,7 @@ static int nmk_i2c_probe(struct amba_device *adev, const
struct amba_id *id)
return -ENODEV;
}
- dev = kzalloc(sizeof(struct nmk_i2c_dev), GFP_KERNEL);
+ dev = devm_kzalloc(&adev->dev, sizeof(struct nmk_i2c_dev), GFP_KERNEL);
if (!dev) {
dev_err(&adev->dev, "cannot allocate memory\n");
ret = -ENOMEM;
@@ -1011,27 +1011,28 @@ static int nmk_i2c_probe(struct amba_device *adev,
const struct amba_id *id)
/* If possible, let's go to idle until the first transfer */
pinctrl_pm_select_idle_state(&adev->dev);
- dev->virtbase = ioremap(adev->res.start, resource_size(&adev->res));
+ dev->virtbase = devm_ioremap(&adev->dev, adev->res.start,
+ resource_size(&adev->res));
if (!dev->virtbase) {
ret = -ENOMEM;
- goto err_no_ioremap;
+ goto err_no_mem;
}
dev->irq = adev->irq[0];
- ret = request_irq(dev->irq, i2c_irq_handler, 0,
+ ret = devm_request_irq(&adev->dev, dev->irq, i2c_irq_handler, 0,
DRIVER_NAME, dev);
if (ret) {
dev_err(&adev->dev, "cannot claim the irq %d\n", dev->irq);
- goto err_irq;
+ goto err_no_mem;
}
pm_suspend_ignore_children(&adev->dev, true);
- dev->clk = clk_get(&adev->dev, NULL);
+ dev->clk = devm_clk_get(&adev->dev, NULL);
if (IS_ERR(dev->clk)) {
dev_err(&adev->dev, "could not get i2c clock\n");
ret = PTR_ERR(dev->clk);
- goto err_no_clk;
+ goto err_no_mem;
}
adap = &dev->adap;
@@ -1053,21 +1054,13 @@ static int nmk_i2c_probe(struct amba_device *adev,
const struct amba_id *id)
ret = i2c_add_adapter(adap);
if (ret) {
dev_err(&adev->dev, "failed to add adapter\n");
- goto err_add_adap;
+ goto err_no_mem;
}
pm_runtime_put(&adev->dev);
return 0;
- err_add_adap:
- clk_put(dev->clk);
- err_no_clk:
- free_irq(dev->irq, dev);
- err_irq:
- iounmap(dev->virtbase);
- err_no_ioremap:
- kfree(dev);
err_no_mem:
return ret;
@@ -1084,13 +1077,9 @@ static int nmk_i2c_remove(struct amba_device *adev)
clear_all_interrupts(dev);
/* disable the controller */
i2c_clr_bit(dev->virtbase + I2C_CR, I2C_CR_PE);
- free_irq(dev->irq, dev);
- iounmap(dev->virtbase);
if (res)
release_mem_region(res->start, resource_size(res));
- clk_put(dev->clk);
pm_runtime_disable(&adev->dev);
- kfree(dev);
return 0;
}
--
1.7.9.5
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