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authorJulia Lawall <Julia.Lawall@lip6.fr>2012-07-30 16:43:45 +0200
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-08-10 12:04:09 -0700
commit1c5404f7abd250ce71849c2687d266073b54e1d4 (patch)
treedc117a101f79ed57dcea2262797df6c791018df2 /drivers/usb/host/ehci-ppc-of.c
parentaf09c060895b9c9137c02943c71302ac0fc9555a (diff)
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>
Diffstat (limited to 'drivers/usb/host/ehci-ppc-of.c')
-rw-r--r--drivers/usb/host/ehci-ppc-of.c28
1 files changed, 7 insertions, 21 deletions
diff --git a/drivers/usb/host/ehci-ppc-of.c b/drivers/usb/host/ehci-ppc-of.c
index bbbe89dfd886..fa937d05a02b 100644
--- a/drivers/usb/host/ehci-ppc-of.c
+++ b/drivers/usb/host/ehci-ppc-of.c
@@ -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);