diff options
| author | Vivek Gautam <gautam.vivek@samsung.com> | 2014-05-10 17:30:08 +0530 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2014-05-27 14:52:29 -0700 |
| commit | e0f77a91ee30ed785c107ed48fb2171d063df42b (patch) | |
| tree | 31d45569f45710b5a7ae1245f3d9b5c7dd8970d1 | |
| parent | 40a5ec988c3403106f5fb68ca3a328beff3c11bf (diff) | |
| download | op-kernel-dev-e0f77a91ee30ed785c107ed48fb2171d063df42b.zip op-kernel-dev-e0f77a91ee30ed785c107ed48fb2171d063df42b.tar.gz | |
usb: host: ehci-spear: Use devm_ioremap_resource instead of devm_ioremap
Using devm_ioremap_resource() API should actually be preferred over
devm_ioremap(), since the former request the mem region first and then
gives back the ioremap'ed memory pointer.
devm_ioremap_resource() calls request_mem_region(), therby preventing
other drivers to make any overlapping call to the same region.
Signed-off-by: Vivek Gautam <gautam.vivek@samsung.com>
Acked-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | drivers/usb/host/ehci-spear.c | 13 |
1 files changed, 3 insertions, 10 deletions
diff --git a/drivers/usb/host/ehci-spear.c b/drivers/usb/host/ehci-spear.c index 8bd915b..1d59958 100644 --- a/drivers/usb/host/ehci-spear.c +++ b/drivers/usb/host/ehci-spear.c @@ -106,16 +106,9 @@ static int spear_ehci_hcd_drv_probe(struct platform_device *pdev) hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); - if (!devm_request_mem_region(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len, - driver->description)) { - retval = -EBUSY; - goto err_put_hcd; - } - - hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len); - if (hcd->regs == NULL) { - dev_dbg(&pdev->dev, "error mapping memory\n"); - retval = -ENOMEM; + hcd->regs = devm_ioremap_resource(&pdev->dev, res); + if (IS_ERR(hcd->regs)) { + retval = PTR_ERR(hcd->regs); goto err_put_hcd; } |
