This patch changes the ehci-platform driver to use the device managed helper
functions 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 not longer need to release and iounmap
memory resources.
Signed-off-by: Florian Fainelli <florian@xxxxxxxxxxx>
---
drivers/usb/host/ehci-platform.c | 16 ++++++----------
1 file changed, 6 insertions(+), 10 deletions(-)
diff --git a/drivers/usb/host/ehci-platform.c b/drivers/usb/host/ehci-platform.c
index 3cb0b1b..ebe92cf 100644
--- a/drivers/usb/host/ehci-platform.c
+++ b/drivers/usb/host/ehci-platform.c
@@ -123,29 +123,27 @@ static int __devinit ehci_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)) {
+ if (!devm_request_mem_region(&dev->dev, 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_ioremap_nocache(&dev->dev, hcd->rsrc_start,
+ hcd->rsrc_len);
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:
@@ -161,8 +159,6 @@ static int __devexit ehci_platform_remove(struct platform_device *dev)
struct usb_ehci_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);
--
1.7.9.5
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
