| commit | ee4063fa6bd801fa6ea045f23a2934db009b3dac | [log] [tgz] |
|---|---|---|
| author | Ian Abbott <abbotti@mev.co.uk> | Wed May 19 16:59:40 2010 +0100 |
| committer | Greg Kroah-Hartman <gregkh@suse.de> | Fri Jun 04 13:38:53 2010 -0700 |
| tree | f23288b2f1900fa34950381a2c63ab11f42e4391 | |
| parent | d4da77a73cb9cc9a1a349daa1a2723505b086e2d [diff] |
Staging: comedi: amplc_dio200: Protect counter subdevice with spinlock The internal state of an 82C54 counter timer chip will get messed up if several threads read, write, configure, or check the status of the chip simultaneously. Protect the register access sequences with a spin lock. Signed-off-by: Ian Abbott <abbotti@mev.co.uk> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>