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drivers/usb/host/ehci-ppc-of.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 2012-07-30 16:43:45 +02:00 committed by Greg Kroah-Hartman
parent af09c06089
commit 1c5404f7ab
1 changed files with 7 additions and 21 deletions
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28
drivers/usb/host/ehci-ppc-of.c
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@ -114,12 +114,6 @@ static int __devinit ehci_hcd_ppc_of_probe(struct platform_device *op)
hcd->rsrc_start = res.start;
hcd->rsrc_len = resource_size(&res);
if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
printk(KERN_ERR "%s: request_mem_region failed\n", __FILE__);
rv = -EBUSY;
goto err_rmr;
}
irq = irq_of_parse_and_map(dn, 0);
if (irq == NO_IRQ) {
printk(KERN_ERR "%s: irq_of_parse_and_map failed\n", __FILE__);
@ -127,9 +121,9 @@ static int __devinit ehci_hcd_ppc_of_probe(struct platform_device *op)
goto err_irq;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
hcd->regs = devm_request_and_ioremap(&op->dev, &res);
if (!hcd->regs) {
printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
pr_err("%s: devm_request_and_ioremap failed\n", __FILE__);
rv = -ENOMEM;
goto err_ioremap;
}
@ -139,8 +133,10 @@ static int __devinit ehci_hcd_ppc_of_probe(struct platform_device *op)
if (np != NULL) {
/* claim we really affected by usb23 erratum */
if (!of_address_to_resource(np, 0, &res))
ehci->ohci_hcctrl_reg = ioremap(res.start +
OHCI_HCCTRL_OFFSET, OHCI_HCCTRL_LEN);
ehci->ohci_hcctrl_reg =
devm_ioremap(&op->dev,
res.start + OHCI_HCCTRL_OFFSET,
OHCI_HCCTRL_LEN);
else
pr_debug("%s: no ohci offset in fdt\n", __FILE__);
if (!ehci->ohci_hcctrl_reg) {
@ -169,19 +165,13 @@ static int __devinit ehci_hcd_ppc_of_probe(struct platform_device *op)
rv = usb_add_hcd(hcd, irq, 0);
if (rv)
goto err_ehci;
goto err_ioremap;
return 0;
err_ehci:
if (ehci->has_amcc_usb23)
iounmap(ehci->ohci_hcctrl_reg);
iounmap(hcd->regs);
err_ioremap:
irq_dispose_mapping(irq);
err_irq:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err_rmr:
usb_put_hcd(hcd);
return rv;
@ -202,9 +192,7 @@ static int ehci_hcd_ppc_of_remove(struct platform_device *op)
usb_remove_hcd(hcd);
iounmap(hcd->regs);
irq_dispose_mapping(hcd->irq);
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
/* use request_mem_region to test if the ohci driver is loaded. if so
* ensure the ohci core is operational.
@ -222,8 +210,6 @@ static int ehci_hcd_ppc_of_remove(struct platform_device *op)
pr_debug("%s: no ohci offset in fdt\n", __FILE__);
of_node_put(np);
}
iounmap(ehci->ohci_hcctrl_reg);
}
usb_put_hcd(hcd);