drivers/usb/host/ehci-atmel.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>
diff --git a/drivers/usb/host/ehci-atmel.c b/drivers/usb/host/ehci-atmel.c
index a47e2cf..411bb74 100644
--- a/drivers/usb/host/ehci-atmel.c
+++ b/drivers/usb/host/ehci-atmel.c
@@ -150,31 +150,24 @@
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;
}
- iclk = clk_get(&pdev->dev, "ehci_clk");
+ iclk = devm_clk_get(&pdev->dev, "ehci_clk");
if (IS_ERR(iclk)) {
dev_err(&pdev->dev, "Error getting interface clock\n");
retval = -ENOENT;
- goto fail_get_iclk;
+ goto fail_request_resource;
}
- fclk = clk_get(&pdev->dev, "uhpck");
+ fclk = devm_clk_get(&pdev->dev, "uhpck");
if (IS_ERR(fclk)) {
dev_err(&pdev->dev, "Error getting function clock\n");
retval = -ENOENT;
- goto fail_get_fclk;
+ goto fail_request_resource;
}
atmel_start_ehci(pdev);
@@ -187,13 +180,6 @@
fail_add_hcd:
atmel_stop_ehci(pdev);
- clk_put(fclk);
-fail_get_fclk:
- clk_put(iclk);
-fail_get_iclk:
- iounmap(hcd->regs);
-fail_ioremap:
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
fail_request_resource:
usb_put_hcd(hcd);
fail_create_hcd:
@@ -209,13 +195,9 @@
ehci_shutdown(hcd);
usb_remove_hcd(hcd);
- iounmap(hcd->regs);
- release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
usb_put_hcd(hcd);
atmel_stop_ehci(pdev);
- clk_put(fclk);
- clk_put(iclk);
fclk = iclk = NULL;
return 0;