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authorHimangi Saraogi <himangi774@gmail.com>2014-06-12 00:48:44 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2014-07-09 16:31:48 -0700
commit96ae571338a4b2ecd2e42a6881bb0daa1a4e7d4f (patch)
tree7ad28eb711a37b05fcf2fafbf89a91ae56cd27a4 /drivers/usb/host
parent3e346d41bfcdf803284b06ef6e4bf13fa2b86277 (diff)
uhci-platform: use devm_ioremap resource
This patch replaces the memory allocation using request_mem_region and the ioremap by a single call to managed interface devm_ioremap_reource. The corresponding calls to release_mem_region and iounmap in the probe and release functions are now unnecessary and are removed. Also a label is done away with and linux/device.h is added to make sure the devm_*() outine declarations are unambiguously available. Signed-off-by: Himangi Saraogi <himangi774@gmail.com> Acked-by: Julia Lawall <julia.lawall@lip6.fr> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host')
-rw-r--r--drivers/usb/host/uhci-platform.c22
1 files changed, 5 insertions, 17 deletions
diff --git a/drivers/usb/host/uhci-platform.c b/drivers/usb/host/uhci-platform.c
index 01833ab2b5c3..b987f1d10058 100644
--- a/drivers/usb/host/uhci-platform.c
+++ b/drivers/usb/host/uhci-platform.c
@@ -8,6 +8,7 @@
*/
#include <linux/of.h>
+#include <linux/device.h>
#include <linux/platform_device.h>
static int uhci_platform_init(struct usb_hcd *hcd)
@@ -88,33 +89,22 @@ static int uhci_hcd_platform_probe(struct platform_device *pdev)
hcd->rsrc_start = res->start;
hcd->rsrc_len = resource_size(res);
- if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
- pr_err("%s: request_mem_region failed\n", __func__);
- ret = -EBUSY;
+ hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ if (IS_ERR(hcd->regs)) {
+ ret = PTR_ERR(hcd->regs);
goto err_rmr;
}
-
- hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
- if (!hcd->regs) {
- pr_err("%s: ioremap failed\n", __func__);
- ret = -ENOMEM;
- goto err_irq;
- }
uhci = hcd_to_uhci(hcd);
uhci->regs = hcd->regs;
ret = usb_add_hcd(hcd, pdev->resource[1].start, IRQF_SHARED);
if (ret)
- goto err_uhci;
+ goto err_rmr;
device_wakeup_enable(hcd->self.controller);
return 0;
-err_uhci:
- iounmap(hcd->regs);
-err_irq:
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err_rmr:
usb_put_hcd(hcd);
@@ -126,8 +116,6 @@ static int uhci_hcd_platform_remove(struct platform_device *pdev)
struct usb_hcd *hcd = platform_get_drvdata(pdev);
usb_remove_hcd(hcd);
- iounmap(hcd->regs);
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
return 0;