problem with iwlwifi

[dragoran]

Amit Rana wrote:
> Hi,
> I was finally able to start my wifi, but soon after my first internet
> request i.e. ping google.com it stopped responding. It did give result
> for the first ping but there after it didnt work with constant
> recursive messages in /var/log/messages
>
> [amit at localhost ~]$ uname -ar
> Linux localhost.localdomain 2.6.21-1.3116.fc7 #1 SMP Thu Apr 26
> 10:36:44 EDT 2007 i686 i686 i386 GNU/Linux
>
> http://smolt.fedoraproject.org/show?UUID=22c8710a-e702-4bcb-b002-448a3e53805b 
>
>
> messages:
> [...]
>
> last 30-40 messages starting from
> May  2 13:46:55 localhost kernel: BUG: warning at
> include/asm/dma-mapping.h:25/dma_map_single() (Not tainted)
> kept on repeating.
>
> And I cannot use wifi.
>
> How do I reset the connection? If I use NM to disable and then enable
> it never re-enables, I have to restart.
>
> any help?
>
try the kernel from here:
http://people.redhat.com/davej/kernels/Fedora/fc7/RPMS.kernel/
there has been many important fixes in the newer iwlwifi releases 
(include for the dma problem you are seeing).
it works fine for me with nm + wpa and with wpa_supplicant  + wpa.