1<h2>device_close</h2> 2<hr> 3<p> 4<strong>Function</strong> - De-establish a connection to a device. 5<h3>SYNOPSIS</h3> 6<pre> 7<strong>#include< device/device.h></strong> 8 9<strong>kern_return_t device_close</strong> 10 <strong>(mach_port_t</strong> <var>device</var><strong>);</strong> 11</pre> 12<h3>PARAMETERS</h3> 13<dl> 14<p> 15<dt> <var>device</var> 16<dd> 17[in device send right] 18A device port to the device to be closed. 19</dl> 20<h3>DESCRIPTION</h3> 21<p> 22The <strong>device_close</strong> function destroys the associated device 23port. The open count 24for the named device is decremented. If this count reaches zero, the close 25operation of the device driver is invoked, closing the device. 26<h3>NOTES</h3> 27<p> 28<strong>device_close</strong> will destroy any mapped device windows 29obtained through this 30device port. 31<h3>RETURN VALUES</h3> 32<dl> 33<p> 34<dt> <strong>D_NO_SUCH_DEVICE</strong> 35<dd> 36No device with that name, or the device is not operational. 37</dl> 38<h3>RELATED INFORMATION</h3> 39<p> 40Functions: 41<a href="device_open.html"><strong>device_open</strong></a>. 42