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Re: compat-wireless-2.6.35-rc6 won't build

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Am 02.09.2010 09:17, schrieb Luis R. Rodriguez:
> 2010/9/1 Carlos Salvador Pérez Salgado <carlosalvatore@xxxxxxxxx>:
>> On 08/31/2010 11:28 AM, Carlos Salvador Pérez Salgado wrote:
>>>
>>> On 08/31/2010 10:32 AM, Luis R. Rodriguez wrote:
>>>>
>>>> 2010/8/31 Carlos Salvador Pérez Salgado<carlosalvatore@xxxxxxxxx>:
>>>>>
>>>>> Do you have a better idea of how can I fix that? I'll really appreciate
>>>>> it.
>>>>
>>>> Yeah, try to compat-wireless-2.6.36-rc2 ...
>>>>
>>>>   Luis
>>>>
>>> Nope... the same error...
>>>
>>>
>>>  LD
>>>  /media/disk/temp/compat-wireless-2.6.36-rc2-1/net/rfkill/built-in.o
>>>  LD
>>>  /media/disk/temp/compat-wireless-2.6.36-rc2-1/net/wireless/built-in.o
>>>  CC [M]  /media/disk/temp/compat-wireless-2.6.36-rc2-1/net/wireless/core.o
>>> /media/disk/temp/compat-wireless-2.6.36-rc2-1/net/wireless/core.c: In
>>> function ‘cfg80211_netdev_notifier_call’:
>>> /media/disk/temp/compat-wireless-2.6.36-rc2-1/net/wireless/core.c:705:
>>> error: ‘struct net_device’ has no member named ‘wireless_handlers’
>>> /media/disk/temp/compat-wireless-2.6.36-rc2-1/net/wireless/core.c:706:
>>> error: ‘struct net_device’ has no member named ‘wireless_handlers’
>>> make[3]: ***
>>> [/media/disk/temp/compat-wireless-2.6.36-rc2-1/net/wireless/core.o] Error 1
>>> make[2]: *** [/media/disk/temp/compat-wireless-2.6.36-rc2-1/net/wireless]
>>> Error 2
>>> make[1]: *** [_module_/media/disk/temp/compat-wireless-2.6.36-rc2-1] Error
>>> 2
>>> make[1]: Leaving directory `/media/disk/temp/linux-2.6.35.4'
>>> make: *** [modules] Error 2
>>>
>>> That didn't help. I hope you can give me another idea.
>>> Thanks.
>>
>> So...? What should I do?
> 
> Sorry, I have not have had time to test compile against 2.6.35, but
> when I do I will let you know.
> 
>   Luis
Hi,

I was able to reproduce the problem. In the kernel configuration
CONFIG_WIRELESS_EXT=n and CONFIG_CFG80211_WEXT=y are set.
compat-wireless uses the old wireless_handlers attribute for the wext
handlers interface, but this is only activated if CONFIG_WIRELESS_EXT=y
is set.
We can not use the new interface through struct wiphy that cfg80211_wext
normally uses. The struct is shipped by compat-wireless and changed
ofter with different kernel versions, so the pointers do not point to
the correct position when using two different versions of this strcut.
compat-wireless should *always* deactivates CONFIG_CFG80211_WEXT if
CONFIG_WIRELESS_EXT is not set. I got our compat_autoconf.h to overwirte
the kernels autoconf.h by add it to LINUXINCLUDE, but I have not found a
way how to disable CONFIG_WIRELESS_EXT in the makefile if it was set in
the kernel because config.mk is pared before the kernel configuration is
parsed. An other way would be to rename CONFIG_WIRELESS_EXT to something
else in compat-wireless to prevent the kernel from overwriting this value.

There will be no way to support cfg80211_wext without a kernel
configured with CONFIG_CFG80211_WEXT=y.

Hauke
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