From 1feda3ed2e5b5968c8393c0e7fe2c27a06a0f4f7 Mon Sep 17 00:00:00 2001 From: Julia Lawall Date: Sun, 29 Jul 2012 21:46:09 +0200 Subject: [PATCH] drivers/usb/host/ehci-ixp4xx.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 Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-ixp4xx.c | 19 +++---------------- 1 file changed, 3 insertions(+), 16 deletions(-) diff --git a/drivers/usb/host/ehci-ixp4xx.c b/drivers/usb/host/ehci-ixp4xx.c index 488d401942e9..f224c0a48bed 100644 --- a/drivers/usb/host/ehci-ixp4xx.c +++ b/drivers/usb/host/ehci-ixp4xx.c @@ -98,30 +98,19 @@ static int ixp4xx_ehci_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, - driver->description)) { - dev_dbg(&pdev->dev, "controller already in use\n"); - retval = -EBUSY; - goto fail_request_resource; - } - - hcd->regs = ioremap_nocache(hcd->rsrc_start, hcd->rsrc_len); + hcd->regs = devm_request_and_ioremap(&pdev->dev, res); if (hcd->regs == NULL) { dev_dbg(&pdev->dev, "error mapping memory\n"); retval = -EFAULT; - goto fail_ioremap; + goto fail_request_resource; } retval = usb_add_hcd(hcd, irq, IRQF_SHARED); if (retval) - goto fail_add_hcd; + goto fail_request_resource; return retval; -fail_add_hcd: - iounmap(hcd->regs); -fail_ioremap: - release_mem_region(hcd->rsrc_start, hcd->rsrc_len); fail_request_resource: usb_put_hcd(hcd); fail_create_hcd: @@ -134,8 +123,6 @@ static int ixp4xx_ehci_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;