[PATCH] iwlcore: Allow runtime configuration of no_sleep_autoadjust

[Andrew Lutomirski <andy@luto.us>]

Runtime adjustment of no_sleep_autoadjust seems fine, both looking at
the code and in practice.  This makes it easier to test.

Signed-off-by: Andy Lutomirski <luto@mit.edu>
---
I've been running this patch (and twiddling the setting) for a couple
months now, and it seems to work fine.  I think it's a bit late for
2.6.32, even though it's pretty much impossible for this to cause any
regressions, but it would be nice to see it go in for 2.6.33 until
no_sleep_autoadjust goes away.

diff --git a/drivers/net/wireless/iwlwifi/iwl-power.c
b/drivers/net/wireless/iwlwifi/iwl-power.c
index 60be976..4eba1ab 100644
--- a/drivers/net/wireless/iwlwifi/iwl-power.c
+++ b/drivers/net/wireless/iwlwifi/iwl-power.c
@@ -54,7 +54,7 @@
  * adjusting ...
  */
 bool no_sleep_autoadjust = true;
-module_param(no_sleep_autoadjust, bool, S_IRUGO);
+module_param(no_sleep_autoadjust, bool, S_IRUGO | S_IWUSR);
 MODULE_PARM_DESC(no_sleep_autoadjust,
 		 "don't automatically adjust sleep level "
 		 "according to maximum network latency");