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usb: host: uhci-grlib.c : use devm_ functions

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The various devm_ functions allocate memory that is released when a
driver detaches. This patch uses devm_ioremap_resource for data
that is allocated in the probe function of a platform device and
is only freed in the remove function. The corresponding free functions
are removed and two labels are done away with. Also, linux/device.h
is added to make sure the devm_*() routine declarations are
unambiguously available.

Signed-off-by: Himangi Saraogi <himangi774@gmail.com>
Acked-by: Andreas Larsson <andreas@gaisler.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Himangi Saraogi 2014-06-12 00:08:23 +05:30 committed by Greg Kroah-Hartman
parent 6a70b62122
commit ddd9425741
1 changed files with 9 additions and 22 deletions
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31
drivers/usb/host/uhci-grlib.c
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@ -17,6 +17,7 @@
* (C) Copyright 2004-2007 Alan Stern, stern@rowland.harvard.edu
*/
#include <linux/device.h>
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include <linux/of_platform.h>
@ -113,24 +114,17 @@ static int uhci_hcd_grlib_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__);
rv = -EBUSY;
goto err_irq;
goto err_usb;
}
hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
printk(KERN_ERR "%s: ioremap failed\n", __FILE__);
rv = -ENOMEM;
goto err_ioremap;
hcd->regs = devm_ioremap_resource(&op->dev, &res);
if (IS_ERR(hcd->regs)) {
rv = PTR_ERR(hcd->regs);
goto err_irq;
}
uhci = hcd_to_uhci(hcd);
@ -139,18 +133,14 @@ static int uhci_hcd_grlib_probe(struct platform_device *op)
rv = usb_add_hcd(hcd, irq, 0);
if (rv)
goto err_uhci;
goto err_irq;
device_wakeup_enable(hcd->self.controller);
return 0;
err_uhci:
iounmap(hcd->regs);
err_ioremap:
irq_dispose_mapping(irq);
err_irq:
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err_rmr:
irq_dispose_mapping(irq);
err_usb:
usb_put_hcd(hcd);
return rv;
@ -164,10 +154,7 @@ static int uhci_hcd_grlib_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);
usb_put_hcd(hcd);
return 0;