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drivers/usb/host/ehci-cns3xxx.c: use devm_ functions 

The various devm_ functions allocate memory that is released when a driver
detaches.  This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Julia Lawall 2012-07-29 21:46:07 +02:00 committed by Greg Kroah-Hartman
parent 8ca41ae35f
commit f0675e2a99
1 changed files with 2 additions and 14 deletions
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16
drivers/usb/host/ehci-cns3xxx.c
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@ -105,27 +105,17 @@ static int cns3xxx_ehci_probe(struct platform_device *pdev)
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len,
driver->description)) {
dev_dbg(dev, "controller already in use\n");
retval = -EBUSY;
goto err1;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
hcd->regs = devm_request_and_ioremap(&pdev->dev, res);
if (hcd->regs == NULL) {
dev_dbg(dev, "error mapping memory\n");
retval = -EFAULT;
goto err2;
goto err1;
}
retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
if (retval == 0)
return retval;
iounmap(hcd->regs);
err2:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
usb_put_hcd(hcd);
@ -137,8 +127,6 @@ static int cns3xxx_ehci_remove(struct platform_device *pdev)
struct usb_hcd *hcd = platform_get_drvdata(pdev);
usb_remove_hcd(hcd);
iounmap(hcd->regs);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
/*
* EHCI and OHCI share the same clock and power,