diff options
author | Julia Lawall <Julia.Lawall@lip6.fr> | 2012-07-29 21:46:13 +0200 |
---|---|---|
committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-08-10 12:01:34 -0700 |
commit | af09c060895b9c9137c02943c71302ac0fc9555a (patch) | |
tree | 9707aa5e25ab744b4f6708b60cab1abade1af20c /drivers/usb/host/ehci-mxc.c | |
parent | 35b55563dffd4a68988077e402ddd330e8cfa580 (diff) | |
download | linux-af09c060895b9c9137c02943c71302ac0fc9555a.tar.bz2 |
drivers/usb/host/ehci-mxc.c: use devm_ functions
The various devm_ functions allocate memory that is released when a driver
detaches. This patch uses these functions for data that is allocated in
the probe function of a platform device and is only freed in the remove
function.
Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb/host/ehci-mxc.c')
-rw-r--r-- | drivers/usb/host/ehci-mxc.c | 45 |
1 files changed, 10 insertions, 35 deletions
diff --git a/drivers/usb/host/ehci-mxc.c b/drivers/usb/host/ehci-mxc.c index 34201372c85f..959e1a4c3491 100644 --- a/drivers/usb/host/ehci-mxc.c +++ b/drivers/usb/host/ehci-mxc.c @@ -121,7 +121,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev) if (!hcd) return -ENOMEM; - priv = kzalloc(sizeof(*priv), GFP_KERNEL); + priv = devm_kzalloc(&pdev->dev, sizeof(*priv), GFP_KERNEL); if (!priv) { ret = -ENOMEM; goto err_alloc; @@ -131,34 +131,28 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev) if (!res) { dev_err(dev, "Found HC with no register addr. Check setup!\n"); ret = -ENODEV; - goto err_get_resource; + goto err_alloc; } hcd->rsrc_start = res->start; hcd->rsrc_len = resource_size(res); - if (!request_mem_region(hcd->rsrc_start, hcd->rsrc_len, hcd_name)) { - dev_dbg(dev, "controller already in use\n"); - ret = -EBUSY; - goto err_request_mem; - } - - hcd->regs = ioremap(hcd->rsrc_start, hcd->rsrc_len); + hcd->regs = devm_request_and_ioremap(&pdev->dev, res); if (!hcd->regs) { dev_err(dev, "error mapping memory\n"); ret = -EFAULT; - goto err_ioremap; + goto err_alloc; } /* enable clocks */ - priv->usbclk = clk_get(dev, "ipg"); + priv->usbclk = devm_clk_get(&pdev->dev, "ipg"); if (IS_ERR(priv->usbclk)) { ret = PTR_ERR(priv->usbclk); - goto err_clk; + goto err_alloc; } clk_prepare_enable(priv->usbclk); - priv->ahbclk = clk_get(dev, "ahb"); + priv->ahbclk = devm_clk_get(&pdev->dev, "ahb"); if (IS_ERR(priv->ahbclk)) { ret = PTR_ERR(priv->ahbclk); goto err_clk_ahb; @@ -166,7 +160,7 @@ static int ehci_mxc_drv_probe(struct platform_device *pdev) clk_prepare_enable(priv->ahbclk); /* "dr" device has its own clock on i.MX51 */ - priv->phyclk = clk_get(dev, "phy"); + priv->phyclk = devm_clk_get(&pdev->dev, "phy"); if (IS_ERR(priv->phyclk)) priv->phyclk = NULL; if (priv->phyclk) @@ -245,23 +239,12 @@ err_add: if (pdata && pdata->exit) pdata->exit(pdev); err_init: - if (priv->phyclk) { + if (priv->phyclk) clk_disable_unprepare(priv->phyclk); - clk_put(priv->phyclk); - } clk_disable_unprepare(priv->ahbclk); - clk_put(priv->ahbclk); err_clk_ahb: clk_disable_unprepare(priv->usbclk); - clk_put(priv->usbclk); -err_clk: - iounmap(hcd->regs); -err_ioremap: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); -err_request_mem: -err_get_resource: - kfree(priv); err_alloc: usb_put_hcd(hcd); return ret; @@ -280,22 +263,14 @@ static int __exit ehci_mxc_drv_remove(struct platform_device *pdev) usb_phy_shutdown(pdata->otg); usb_remove_hcd(hcd); - iounmap(hcd->regs); - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); usb_put_hcd(hcd); platform_set_drvdata(pdev, NULL); clk_disable_unprepare(priv->usbclk); - clk_put(priv->usbclk); clk_disable_unprepare(priv->ahbclk); - clk_put(priv->ahbclk); - if (priv->phyclk) { + if (priv->phyclk) clk_disable_unprepare(priv->phyclk); - clk_put(priv->phyclk); - } - - kfree(priv); return 0; } |