removed some ineffectual locking I put in a long time ago when I was young

and naive.

diff --git a/comedi/comedi_fops.c b/comedi/comedi_fops.c
index f708fac599ed9b7d23eb829451c7c95cc293edce..da95d59869355f14ddfeaa5ed9d04ebb5062d505 100644 (file)
--- a/comedi/comedi_fops.c
+++ b/comedi/comedi_fops.c
@@ -432,8 +432,6 @@ static int do_bufinfo_ioctl(comedi_device *dev,void *arg)
        comedi_bufinfo bi;
        comedi_subdevice *s;
        comedi_async *async;
-       static spinlock_t bufinfo_lock = SPIN_LOCK_UNLOCKED;
-       unsigned long irq_flags;
        int m;
 
        if(copy_from_user(&bi,arg, sizeof(comedi_bufinfo)))
@@ -479,11 +477,9 @@ static int do_bufinfo_ioctl(comedi_device *dev,void *arg)
                        do_become_nonbusy(dev,s);
                }
        }
-
-       comedi_spin_lock_irqsave(&bufinfo_lock, irq_flags);
        bi.buf_int_count = async->buf_int_count;
+       // XXX why why report the pointer values, they are useless to the user
        bi.buf_int_ptr = async->buf_int_ptr;
-       comedi_spin_unlock_irqrestore(&bufinfo_lock, irq_flags);
        bi.buf_user_count = async->buf_user_count;
        bi.buf_user_ptr = async->buf_user_ptr;