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| author | Julia Lawall <julia@diku.dk> | 2010-03-29 17:36:44 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-04-30 09:25:11 -0700 |
| commit | 19c190f9e0fe926db28122a804111a7538dc3498 (patch) | |
| tree | 6b8ee251d941846dabe35cc3d23ac1b0e556cf42 | |
| parent | 6d602610099632a9a15ef6d2bc9fd7b7d6aeb63e (diff) | |
| download | linux-3.10-19c190f9e0fe926db28122a804111a7538dc3498.tar.gz linux-3.10-19c190f9e0fe926db28122a804111a7538dc3498.tar.bz2 linux-3.10-19c190f9e0fe926db28122a804111a7538dc3498.zip | |
USB: gadget: s3c-hsotg: Add missing unlock
In an error handling case the lock is not unlocked. The return is
converted to a goto, to share the unlock at the end of the function.
A simplified version of the semantic patch that finds this problem is as
follows: (http://coccinelle.lip6.fr/)
// <smpl>
@r exists@
expression E1;
identifier f;
@@
f (...) { <+...
* spin_lock_irqsave (E1,...);
... when != E1
* return ...;
...+> }
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | drivers/usb/gadget/s3c-hsotg.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c index 124a8ccfdcd..1f73b485732 100644 --- a/drivers/usb/gadget/s3c-hsotg.c +++ b/drivers/usb/gadget/s3c-hsotg.c @@ -2145,6 +2145,7 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, u32 epctrl; u32 mps; int dir_in; + int ret = 0; dev_dbg(hsotg->dev, "%s: ep %s: a 0x%02x, attr 0x%02x, mps 0x%04x, intr %d\n", @@ -2196,7 +2197,8 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, switch (desc->bmAttributes & USB_ENDPOINT_XFERTYPE_MASK) { case USB_ENDPOINT_XFER_ISOC: dev_err(hsotg->dev, "no current ISOC support\n"); - return -EINVAL; + ret = -EINVAL; + goto out; case USB_ENDPOINT_XFER_BULK: epctrl |= S3C_DxEPCTL_EPType_Bulk; @@ -2235,8 +2237,9 @@ static int s3c_hsotg_ep_enable(struct usb_ep *ep, /* enable the endpoint interrupt */ s3c_hsotg_ctrl_epint(hsotg, index, dir_in, 1); +out: spin_unlock_irqrestore(&hs_ep->lock, flags); - return 0; + return ret; } static int s3c_hsotg_ep_disable(struct usb_ep *ep) |