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authorViresh Kumar <viresh.kumar@linaro.org>2012-11-08 20:37:59 +0530
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2012-11-14 12:15:20 -0800
commit98515e5923b1c8f982511eeec9d27014b05efebf (patch)
tree8d060a8abbb31702660861d0665bf9627ff16316 /drivers/usb/host/ohci-spear.c
parentd8fd7d5ae3e0561920b38647793b1947e07c7acf (diff)
usb: spear-ehci/ohci: Use devm_*() routines
This patch frees SPEAr ehci/ohci drivers from tension of freeing resources :) devm_* derivatives of multiple routines are used while allocating resources, which would be freed automatically by kernel. Signed-off-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ohci-spear.c')
-rw-r--r--drivers/usb/host/ohci-spear.c33
1 files changed, 12 insertions, 21 deletions
diff --git a/drivers/usb/host/ohci-spear.c b/drivers/usb/host/ohci-spear.c
index 974770833653..c69725d9f0cd 100644
--- a/drivers/usb/host/ohci-spear.c
+++ b/drivers/usb/host/ohci-spear.c
@@ -105,7 +105,7 @@ static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
irq = platform_get_irq(pdev, 0);
if (irq < 0) {
retval = irq;
- goto fail_irq_get;
+ goto fail;
}
/*
@@ -116,38 +116,39 @@ static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
if (!pdev->dev.dma_mask)
pdev->dev.dma_mask = &spear_ohci_dma_mask;
- usbh_clk = clk_get(&pdev->dev, NULL);
+ usbh_clk = devm_clk_get(&pdev->dev, NULL);
if (IS_ERR(usbh_clk)) {
dev_err(&pdev->dev, "Error getting interface clock\n");
retval = PTR_ERR(usbh_clk);
- goto fail_get_usbh_clk;
+ goto fail;
}
hcd = usb_create_hcd(driver, &pdev->dev, dev_name(&pdev->dev));
if (!hcd) {
retval = -ENOMEM;
- goto fail_create_hcd;
+ goto fail;
}
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
retval = -ENODEV;
- goto fail_request_resource;
+ goto err_put_hcd;
}
hcd->rsrc_start = pdev->resource[0].start;
hcd->rsrc_len = resource_size(res);
- if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) {
+ if (!devm_request_mem_region(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len,
+ hcd_name)) {
dev_dbg(&pdev->dev, "request_mem_region failed\n");
retval = -EBUSY;
- goto fail_request_resource;
+ goto err_put_hcd;
}
- hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len);
+ hcd->regs = devm_ioremap(&pdev->dev, hcd->rsrc_start, hcd->rsrc_len);
if (!hcd->regs) {
dev_dbg(&pdev->dev, "ioremap failed\n");
retval = -ENOMEM;
- goto fail_ioremap;
+ goto err_put_hcd;
}
ohci_p = (struct spear_ohci *)hcd_to_ohci(hcd);
@@ -160,15 +161,9 @@ static int spear_ohci_hcd_drv_probe(struct platform_device *pdev)
return retval;
spear_stop_ohci(ohci_p);
- iounmap(hcd->regs);
-fail_ioremap:
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
-fail_request_resource:
+err_put_hcd:
usb_put_hcd(hcd);
-fail_create_hcd:
- clk_put(usbh_clk);
-fail_get_usbh_clk:
-fail_irq_get:
+fail:
dev_err(&pdev->dev, "init fail, %d\n", retval);
return retval;
@@ -183,12 +178,8 @@ static int spear_ohci_hcd_drv_remove(struct platform_device *pdev)
if (ohci_p->clk)
spear_stop_ohci(ohci_p);
- iounmap(hcd->regs);
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
- if (ohci_p->clk)
- clk_put(ohci_p->clk);
platform_set_drvdata(pdev, NULL);
return 0;
}