# \[REGRESSION\]\[v3.5\] iwlwifi: include rssi as part of decision making for reduce txpower

- From: Joseph Salisbury \<hidden\>
- Date: 2012-08-03 16:24:23 
- List: netdev
- Page: https://ratatoskr.run/netdev/2012/08/3902746
- Thread: https://ratatoskr.run/linux-wireless/2012/08/3902746/t.md

```text
Hello,

A bug[0] was reported against Ubuntu that reports a kernel panic when using the hotkey to disable then re-enable wifi on a Dell XPS 14z.  A kernel bisect was performed, which indicated the following commit as the source of the regression:


commit dd551ab7b47ace14753b0d73f79437cc35adcf6b
Author: Wey-Yi Guy [ref]
Date:   Thu May 3 14:22:01 2012 -0700

    iwlwifi: include rssi as part of decision making for reduce txpower

    In bt coex, consider the average rssi as part of decision making process

    Change-Id: I8d11d7f177a6875e2a9d08f7539d42253226fd7a
    Signed-off-by: Wey-Yi Guy [ref]
    Reviewed-on: http://git-mwg.jer.intel.com/gerrit/1945
    Tested-by: Jenkins
    Reviewed-by: Emmanuel Grumbach [ref]
    Signed-off-by: John W. Linville [ref]

A test kernel was created with this commit reverted, which stopped the kernel panic from occurring.

A bugzilla bug[1] has been opened.

Thanks,

Joe


[0] https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1029547
[1] https://bugzilla.kernel.org/show_bug.cgi?id=45491
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