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staging: comedi: comedi_fops: remove disabled subdevice lock/unlock callback

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According to Ian Abbott, this code was added in comedi-0.7.6 back in June 1999
and has always been disabled.

The 'lock_f' and 'unlock' members don't even exist in the comedi_subdevice.
Just remove the disabled code.

Signed-off-by: H Hartley Sweeten <hsweeten@visionengravers.com>
Reviewed-by: Ian Abbott <abbotti@mev.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
H Hartley Sweeten
2014-07-21 11:01:26 -07:00
committed by Greg Kroah-Hartman
parent 7a43ba4221
commit 90ac0764e0
1 changed files with 1 additions and 15 deletions
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16
drivers/staging/comedi/comedi_fops.c
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@@ -1660,14 +1660,6 @@ static int do_lock_ioctl(struct comedi_device *dev, unsigned int arg,
s->lock = file;
spin_unlock_irqrestore(&s->spin_lock, flags);
#if 0
if (ret < 0)
return ret;
if (s->lock_f)
ret = s->lock_f(dev, s);
#endif
return ret;
}
@@ -1702,14 +1694,8 @@ static int do_unlock_ioctl(struct comedi_device *dev, unsigned int arg,
if (s->lock && s->lock != file)
return -EACCES;
if (s->lock == file) {
#if 0
if (s->unlock)
s->unlock(dev, s);
#endif
if (s->lock == file)
s->lock = NULL;
}
return 0;
}