--- local_tree.orig/drivers/usb/core/devio.c 2004-07-26 00:17:25.499847408 +0200
+++ local_tree/drivers/usb/core/devio.c 2004-07-26 00:23:41.914115079 +0200
@@ -1102,18 +1102,28 @@
{
struct async *as;
void __user *addr;
+ struct usb_device *dev = ps->dev;
int ret;
- if (!(as = async_getcompleted(ps)))
- return -EAGAIN;
+ down(&dev->serialize);
+ if (!connected(dev)) {
+ ret = -ENODEV;
+ goto fail;
+ }
+ if (!(as = async_getcompleted(ps))) {
+ ret = -EAGAIN;
+ goto fail;
+ }
ret = processcompl(as);
addr = as->userurb;
free_async(as);
if (ret)
- return ret;
- if (put_user(addr, (void __user * __user *)arg))
- return -EFAULT;
- return 0;
+ goto fail;
+ up(&dev->serialize);
+ return put_user(addr, (void __user * __user *)arg) ? -EFAULT : 0;
+fail:
+ up(&dev->serialize);
+ return ret;
}
static int proc_disconnectsignal(struct dev_state *ps, void __user *arg)
@@ -1336,14 +1346,8 @@
break;
case USBDEVFS_REAPURBNDELAY:
- down(&dev->serialize);
- if (!connected(dev)) {
- up(&dev->serialize);
- return -ENODEV;
- }
snoop(&dev->dev, "%s: REAPURBDELAY\n", __FUNCTION__);
ret = proc_reapurbnonblock(ps, p);
- up(&dev->serialize);
break;
case USBDEVFS_DISCSIGNAL:
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