From 7febe2be36035e5c75128e8cc3baeb1f30fa2bc4 Mon Sep 17 00:00:00 2001
From: Julia Lawall <julia@diku.dk>
Date: Wed, 1 Jun 2011 19:10:06 +0200
Subject: [PATCH] drivers/usb/host/ohci-pxa27x.c: add missing clk_put
Add a label before the call to clk_put and jump to that in the error
handling code that occurs after the call to clk_get has succeeded.
A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression e1,e2;
statement S;
@@
e1 = clk_get@p1(...);
... when != e1 = e2
when != clk_put(e1)
when any
if (...) { ... when != clk_put(e1)
when != if (...) { ... clk_put(e1) ... }
* return@p3 ...;
} else S
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Acked-by: Eric Miao <eric.y.miao@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---
drivers/usb/host/ohci-pxa27x.c | 7 +++++--
1 file changed, 5 insertions(+), 2 deletions(-)
diff --git a/drivers/usb/host/ohci-pxa27x.c b/drivers/usb/host/ohci-pxa27x.c
index afef7b0a41956..80be5472783a4 100644
--- a/drivers/usb/host/ohci-pxa27x.c
+++ b/drivers/usb/host/ohci-pxa27x.c
@@ -312,8 +312,10 @@ int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device
return PTR_ERR(usb_clk);
hcd = usb_create_hcd (driver, &pdev->dev, "pxa27x");
- if (!hcd)
- return -ENOMEM;
+ if (!hcd) {
+ retval = -ENOMEM;
+ goto err0;
+ }
r = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!r) {
@@ -368,6 +370,7 @@ int usb_hcd_pxa27x_probe (const struct hc_driver *driver, struct platform_device
release_mem_region(hcd->rsrc_start, hcd->rsrc_len);
err1:
usb_put_hcd(hcd);
+ err0:
clk_put(usb_clk);
return retval;
}
--
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