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USB: yurex: fix race between probe() and read()

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There's a window during which read() would return 0 instead
of a correct error for no data yet. Reorder initialization
to fix the race.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Oliver Neukum 2014-05-19 13:52:20 +02:00 • committed by Greg Kroah-Hartman
commit c78d1ecfd7
1 changed files with 1 additions and 2 deletions
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3
drivers/usb/misc/yurex.c
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@ -296,6 +296,7 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_
/* save our data pointer in this interface device */
usb_set_intfdata(interface, dev);
dev->bbu = -1;
/* we can register the device now, as it is ready */
retval = usb_register_dev(interface, &yurex_class);
@ -306,8 +307,6 @@ static int yurex_probe(struct usb_interface *interface, const struct usb_device_
goto error;
}
dev->bbu = -1;
dev_info(&interface->dev,
"USB YUREX device now attached to Yurex #%d\n",
interface->minor);