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i2c: omap: switch to devm_* API 

that helps deleting some boiler plate code
and lets driver-core manage our resources
for us.

Signed-off-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Shubhrajyoti D <shubhrajyoti@ti.com>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
This commit is contained in:
Felipe Balbi 2012-09-12 16:27:55 +05:30 committed by Wolfram Sang
parent fbc1871511
commit d9ebd04d34
1 changed files with 12 additions and 29 deletions
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41
drivers/i2c/busses/i2c-omap.c
View File

@ -943,7 +943,7 @@ omap_i2c_probe(struct platform_device *pdev)
{
struct omap_i2c_dev *dev;
struct i2c_adapter *adap;
struct resource *mem, *irq, *ioarea;
struct resource *mem, *irq;
struct omap_i2c_bus_platform_data *pdata = pdev->dev.platform_data;
struct device_node *node = pdev->dev.of_node;
const struct of_device_id *match;
@ -962,17 +962,16 @@ omap_i2c_probe(struct platform_device *pdev)
return -ENODEV;
}
ioarea = request_mem_region(mem->start, resource_size(mem),
pdev->name);
if (!ioarea) {
dev_err(&pdev->dev, "I2C region already claimed\n");
return -EBUSY;
dev = devm_kzalloc(&pdev->dev, sizeof(struct omap_i2c_dev), GFP_KERNEL);
if (!dev) {
dev_err(&pdev->dev, "Menory allocation failed\n");
return -ENOMEM;
}
dev = kzalloc(sizeof(struct omap_i2c_dev), GFP_KERNEL);
if (!dev) {
r = -ENOMEM;
goto err_release_region;
dev->base = devm_request_and_ioremap(&pdev->dev, mem);
if (!dev->base) {
dev_err(&pdev->dev, "I2C region already claimed\n");
return -ENOMEM;
}
match = of_match_device(of_match_ptr(omap_i2c_of_match), &pdev->dev);
@ -995,11 +994,6 @@ omap_i2c_probe(struct platform_device *pdev)
dev->dev = &pdev->dev;
dev->irq = irq->start;
dev->base = ioremap(mem->start, resource_size(mem));
if (!dev->base) {
r = -ENOMEM;
goto err_free_mem;
}
platform_set_drvdata(pdev, dev);
init_completion(&dev->cmd_complete);
@ -1057,7 +1051,8 @@ omap_i2c_probe(struct platform_device *pdev)
isr = (dev->rev < OMAP_I2C_OMAP1_REV_2) ? omap_i2c_omap1_isr :
omap_i2c_isr;
r = request_irq(dev->irq, isr, IRQF_NO_SUSPEND, pdev->name, dev);
r = devm_request_irq(&pdev->dev, dev->irq, isr, IRQF_NO_SUSPEND,
pdev->name, dev);
if (r) {
dev_err(dev->dev, "failure requesting irq %i\n", dev->irq);
@ -1081,7 +1076,7 @@ omap_i2c_probe(struct platform_device *pdev)
r = i2c_add_numbered_adapter(adap);
if (r) {
dev_err(dev->dev, "failure adding adapter\n");
goto err_free_irq;
goto err_unuse_clocks;
}
of_i2c_register_devices(adap);
@ -1090,18 +1085,12 @@ omap_i2c_probe(struct platform_device *pdev)
return 0;
err_free_irq:
free_irq(dev->irq, dev);
err_unuse_clocks:
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
pm_runtime_put(dev->dev);
iounmap(dev->base);
pm_runtime_disable(&pdev->dev);
err_free_mem:
platform_set_drvdata(pdev, NULL);
kfree(dev);
err_release_region:
release_mem_region(mem->start, resource_size(mem));
return r;
}
@ -1109,12 +1098,10 @@ err_release_region:
static int __devexit omap_i2c_remove(struct platform_device *pdev)
{
struct omap_i2c_dev *dev = platform_get_drvdata(pdev);
struct resource *mem;
int ret;
platform_set_drvdata(pdev, NULL);
free_irq(dev->irq, dev);
i2c_del_adapter(&dev->adapter);
ret = pm_runtime_get_sync(&pdev->dev);
if (IS_ERR_VALUE(ret))
@ -1123,10 +1110,6 @@ static int __devexit omap_i2c_remove(struct platform_device *pdev)
omap_i2c_write_reg(dev, OMAP_I2C_CON_REG, 0);
pm_runtime_put(&pdev->dev);
pm_runtime_disable(&pdev->dev);
iounmap(dev->base);
kfree(dev);
mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
release_mem_region(mem->start, resource_size(mem));
return 0;
}