diff options
| author | Florian Fainelli <florian@openwrt.org> | 2012-10-08 15:11:46 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-10-22 11:30:26 -0700 |
| commit | be7ac70b9b1cb49758d52abb554c92c03acd6f08 (patch) | |
| tree | 6e9768fa43ca5320877a4cdca7bbcc05a12e883a /drivers/usb/host | |
| parent | 61ff2745e53512adf22625f9194e83e471882523 (diff) | |
USB: OHCI: make ohci-platform use devm_request_and_ioremap helper
This patch changes the ohci-platform driver to use the device managed helper
function for requesting memory region and ioremapping memory resources.
As a result the error path in the probe function is simplified, and the
platform driver remove callback does no longer need to release and iounmap
memory resources. devm_request_and_ioremap() will use either the ioremap()
or ioremap_nocache() handler depending on the resource's CACHEABLE flag, so
we are good with this change.
Signed-off-by: Florian Fainelli <florian@openwrt.org>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ohci-platform.c | 18 |
1 files changed, 3 insertions, 15 deletions
diff --git a/drivers/usb/host/ohci-platform.c b/drivers/usb/host/ohci-platform.c index 1344426b05a..bda4e0bb8ab 100644 --- a/drivers/usb/host/ohci-platform.c +++ b/drivers/usb/host/ohci-platform.c @@ -127,29 +127,19 @@ static int __devinit ohci_platform_probe(struct platform_device *dev) hcd->rsrc_start = res_mem->start; hcd->rsrc_len = resource_size(res_mem); - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { - dev_err(&dev->dev, "controller already in use"); - err = -EBUSY; - goto err_put_hcd; - } - - hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len); + hcd->regs = devm_request_and_ioremap(&dev->dev, res_mem); if (!hcd->regs) { err = -ENOMEM; - goto err_release_region; + goto err_put_hcd; } err = usb_add_hcd(hcd, irq, IRQF_SHARED); if (err) - goto err_iounmap; + goto err_put_hcd; platform_set_drvdata(dev, hcd); return err; -err_iounmap: - iounmap(hcd->regs); -err_release_region: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); err_put_hcd: usb_put_hcd(hcd); err_power: @@ -165,8 +155,6 @@ static int __devexit ohci_platform_remove(struct platform_device *dev) struct usb_ohci_pdata *pdata = dev->dev.platform_data; usb_remove_hcd(hcd); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); platform_set_drvdata(dev, NULL); |