[PATCH 2/7] drivers/usb/host/ehci-s5p.c: use devm_ functions

From: Julia Lawall
Date: Mon Jul 30 2012 - 10:44:30 EST


From: Julia Lawall <Julia.Lawall@xxxxxxx>

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@xxxxxxx>

---
Not compiled

drivers/usb/host/ehci-s5p.c | 7 ++-----
1 file changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/usb/host/ehci-s5p.c b/drivers/usb/host/ehci-s5p.c
index 9d8f1dd..d055503 100644
--- a/drivers/usb/host/ehci-s5p.c
+++ b/drivers/usb/host/ehci-s5p.c
@@ -128,7 +128,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)
}

s5p_ehci->hcd = hcd;
- s5p_ehci->clk = clk_get(&pdev->dev, "usbhost");
+ s5p_ehci->clk = devm_clk_get(&pdev->dev, "usbhost");

if (IS_ERR(s5p_ehci->clk)) {
dev_err(&pdev->dev, "Failed to get usbhost clock\n");
@@ -138,7 +138,7 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)

err = clk_enable(s5p_ehci->clk);
if (err)
- goto fail_clken;
+ goto fail_clk;

res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
@@ -184,8 +184,6 @@ static int __devinit s5p_ehci_probe(struct platform_device *pdev)

fail_io:
clk_disable(s5p_ehci->clk);
-fail_clken:
- clk_put(s5p_ehci->clk);
fail_clk:
usb_put_hcd(hcd);
return err;
@@ -203,7 +201,6 @@ static int __devexit s5p_ehci_remove(struct platform_device *pdev)
pdata->phy_exit(pdev, S5P_USB_PHY_HOST);

clk_disable(s5p_ehci->clk);
- clk_put(s5p_ehci->clk);

usb_put_hcd(hcd);


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