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USB: isp1362: Use devm_ioremap_resource

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Use devm_ioremap_resource to simplify error handling in the probe
function and to get rid of some boilerplate in the remove function.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Tobias Klauser 2014-08-05 14:01:35 +02:00 committed by Greg Kroah-Hartman
parent b760017076
commit ae7c798d6b
1 changed files with 25 additions and 78 deletions
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103
drivers/usb/host/isp1362-hcd.c
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@ -2616,30 +2616,10 @@ static int isp1362_remove(struct platform_device *pdev)
{
struct usb_hcd *hcd = platform_get_drvdata(pdev);
struct isp1362_hcd *isp1362_hcd = hcd_to_isp1362_hcd(hcd);
struct resource *res;
remove_debug_file(isp1362_hcd);
DBG(0, "%s: Removing HCD\n", __func__);
usb_remove_hcd(hcd);
DBG(0, "%s: Unmapping data_reg @ %p\n", __func__,
isp1362_hcd->data_reg);
iounmap(isp1362_hcd->data_reg);
DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__,
isp1362_hcd->addr_reg);
iounmap(isp1362_hcd->addr_reg);
res = platform_get_resource(pdev, IORESOURCE_MEM, 1);
DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start);
if (res)
release_mem_region(res->start, resource_size(res));
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
DBG(0, "%s: release mem_region: %08lx\n", __func__, (long unsigned int)res->start);
if (res)
release_mem_region(res->start, resource_size(res));
DBG(0, "%s: put_hcd\n", __func__);
usb_put_hcd(hcd);
DBG(0, "%s: Done\n", __func__);
@ -2651,12 +2631,11 @@ static int isp1362_probe(struct platform_device *pdev)
{
struct usb_hcd *hcd;
struct isp1362_hcd *isp1362_hcd;
struct resource *addr, *data;
struct resource *addr, *data, *irq_res;
void __iomem *addr_reg;
void __iomem *data_reg;
int irq;
int retval = 0;
struct resource *irq_res;
unsigned int irq_flags = 0;
if (usb_disabled())
@ -2667,52 +2646,35 @@ static int isp1362_probe(struct platform_device *pdev)
* specific platform_data. we don't probe for IRQs, and do only
* minimal sanity checking.
*/
if (pdev->num_resources < 3) {
retval = -ENODEV;
goto err1;
}
data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
addr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!addr || !data || !irq_res) {
retval = -ENODEV;
goto err1;
}
irq = irq_res->start;
if (pdev->num_resources < 3)
return -ENODEV;
if (pdev->dev.dma_mask) {
DBG(1, "won't do DMA");
retval = -ENODEV;
goto err1;
return -ENODEV;
}
if (!request_mem_region(addr->start, resource_size(addr), hcd_name)) {
retval = -EBUSY;
goto err1;
}
addr_reg = ioremap(addr->start, resource_size(addr));
if (addr_reg == NULL) {
retval = -ENOMEM;
goto err2;
}
irq_res = platform_get_resource(pdev, IORESOURCE_IRQ, 0);
if (!irq_res)
return -ENODEV;
if (!request_mem_region(data->start, resource_size(data), hcd_name)) {
retval = -EBUSY;
goto err3;
}
data_reg = ioremap(data->start, resource_size(data));
if (data_reg == NULL) {
retval = -ENOMEM;
goto err4;
}
irq = irq_res->start;
addr = platform_get_resource(pdev, IORESOURCE_MEM, 1);
addr_reg = devm_ioremap_resource(&pdev->dev, addr);
if (IS_ERR(addr_reg))
return PTR_ERR(addr_reg);
data = platform_get_resource(pdev, IORESOURCE_MEM, 0);
data_reg = devm_ioremap_resource(&pdev->dev, data);
if (IS_ERR(data_reg))
return PTR_ERR(data_reg);
/* allocate and initialize hcd */
hcd = usb_create_hcd(&isp1362_hc_driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
retval = -ENOMEM;
goto err5;
}
if (!hcd)
return -ENOMEM;
hcd->rsrc_start = data->start;
isp1362_hcd = hcd_to_isp1362_hcd(hcd);
isp1362_hcd->data_reg = data_reg;
@ -2729,7 +2691,7 @@ static int isp1362_probe(struct platform_device *pdev)
if (!isp1362_hcd->board->delay) {
dev_err(hcd->self.controller, "No platform delay function given\n");
retval = -ENODEV;
goto err6;
goto err;
}
#endif
@ -2744,32 +2706,17 @@ static int isp1362_probe(struct platform_device *pdev)
retval = usb_add_hcd(hcd, irq, irq_flags | IRQF_SHARED);
if (retval != 0)
goto err6;
goto err;
device_wakeup_enable(hcd->self.controller);
pr_info("%s, irq %d\n", hcd->product_desc, irq);
dev_info(&pdev->dev, "%s, irq %d\n", hcd->product_desc, irq);
create_debug_file(isp1362_hcd);
return 0;
err6:
DBG(0, "%s: Freeing dev %p\n", __func__, isp1362_hcd);
err:
usb_put_hcd(hcd);
err5:
DBG(0, "%s: Unmapping data_reg @ %p\n", __func__, data_reg);
iounmap(data_reg);
err4:
DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)data->start);
release_mem_region(data->start, resource_size(data));
err3:
DBG(0, "%s: Unmapping addr_reg @ %p\n", __func__, addr_reg);
iounmap(addr_reg);
err2:
DBG(0, "%s: Releasing mem region %08lx\n", __func__, (long unsigned int)addr->start);
release_mem_region(addr->start, resource_size(addr));
err1:
pr_err("%s: init error, %d\n", __func__, retval);
return retval;
}