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usb: gadget: s3c-hsudc: Use devm_* functions

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devm_* functions are used to replace kzalloc, request_mem_region, ioremap
clk_get and request_irq functions in probe call. With the usage of devm_*
functions explicit freeing and unmapping is not required.

Signed-off-by: Sachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: Felipe Balbi <balbi@ti.com>
This commit is contained in:
Sachin Kamat 2012-09-03 15:48:18 +05:30 committed by Felipe Balbi
parent 9d2333d0d9
commit 78f0c53ef8
1 changed files with 9 additions and 32 deletions
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41
drivers/usb/gadget/s3c-hsudc.c
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@ -135,7 +135,6 @@ struct s3c_hsudc_req {
* @dev: The device reference used by probe function.
* @lock: Lock to synchronize the usage of Endpoints (EP's are indexed).
* @regs: Remapped base address of controller's register space.
* @mem_rsrc: Device memory resource used for remapping device register space.
* irq: IRQ number used by the controller.
* uclk: Reference to the controller clock.
* ep0state: Current state of EP0.
@ -150,7 +149,6 @@ struct s3c_hsudc {
struct regulator_bulk_data supplies[ARRAY_SIZE(s3c_hsudc_supply_names)];
spinlock_t lock;
void __iomem *regs;
struct resource *mem_rsrc;
int irq;
struct clk *uclk;
int ep0state;
@ -1271,7 +1269,7 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev)
struct s3c24xx_hsudc_platdata *pd = pdev->dev.platform_data;
int ret, i;
hsudc = kzalloc(sizeof(struct s3c_hsudc) +
hsudc = devm_kzalloc(&pdev->dev, sizeof(struct s3c_hsudc) +
sizeof(struct s3c_hsudc_ep) * pd->epnum,
GFP_KERNEL);
if (!hsudc) {
@ -1296,25 +1294,12 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev)
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(dev, "unable to obtain driver resource data\n");
ret = -ENODEV;
goto err_res;
}
hsudc->mem_rsrc = request_mem_region(res->start, resource_size(res),
dev_name(&pdev->dev));
if (!hsudc->mem_rsrc) {
dev_err(dev, "failed to reserve register area\n");
ret = -ENODEV;
goto err_res;
}
hsudc->regs = ioremap(res->start, resource_size(res));
hsudc->regs = devm_request_and_ioremap(&pdev->dev, res);
if (!hsudc->regs) {
dev_err(dev, "error mapping device register area\n");
ret = -EBUSY;
goto err_remap;
goto err_res;
}
spin_lock_init(&hsudc->lock);
@ -1337,21 +1322,22 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev)
ret = platform_get_irq(pdev, 0);
if (ret < 0) {
dev_err(dev, "unable to obtain IRQ number\n");
goto err_irq;
goto err_res;
}
hsudc->irq = ret;
ret = request_irq(hsudc->irq, s3c_hsudc_irq, 0, driver_name, hsudc);
ret = devm_request_irq(&pdev->dev, hsudc->irq, s3c_hsudc_irq, 0,
driver_name, hsudc);
if (ret < 0) {
dev_err(dev, "irq request failed\n");
goto err_irq;
goto err_res;
}
hsudc->uclk = clk_get(&pdev->dev, "usb-device");
hsudc->uclk = devm_clk_get(&pdev->dev, "usb-device");
if (IS_ERR(hsudc->uclk)) {
dev_err(dev, "failed to find usb-device clock source\n");
ret = PTR_ERR(hsudc->uclk);
goto err_clk;
goto err_res;
}
clk_enable(hsudc->uclk);
@ -1377,21 +1363,12 @@ static int __devinit s3c_hsudc_probe(struct platform_device *pdev)
device_unregister(&hsudc->gadget.dev);
err_add_device:
clk_disable(hsudc->uclk);
clk_put(hsudc->uclk);
err_clk:
free_irq(hsudc->irq, hsudc);
err_irq:
iounmap(hsudc->regs);
err_remap:
release_mem_region(res->start, resource_size(res));
err_res:
if (!IS_ERR_OR_NULL(hsudc->transceiver))
usb_put_phy(hsudc->transceiver);
regulator_bulk_free(ARRAY_SIZE(hsudc->supplies), hsudc->supplies);
err_supplies:
kfree(hsudc);
return ret;
}