2016-01-11 11:02:54

by Bartlomiej Grzeskowiak

[permalink] [raw]
Subject: WLAN drivers provided by Realtek do not work with backports (cfg80211 module not compatible)

We use 8192cu and 8811AU provided by Realtek. Our kernel is 3.10.
We would like to add parallel support for ath10k_pci from backports.

However after inserting compat.ko, cfg80211.ko and mac80211.ko from
backports, 8192cu.ko and 8821au.ko terminate with following message:
[ 512.188364] 8192cu: Unknown symbol wiphy_new (err 0)
[ 512.188481] 8192cu: Unknown symbol cfg80211_send_disassoc (err 0)
[ 512.188554] 8192cu: Unknown symbol cfg80211_send_rx_assoc (err 0)
[ 512.188607] 8192cu: Unknown symbol cfg80211_inform_bss_frame (err 0)

Those interfaces are exported when I load cfg80211.ko compiled from kernel 3.10.
But I can not see them in cfg80211.ko provided by backports.

Do you know this problem ?
Is there any easy way to solve this issue ?

BR
Bartek


2016-01-11 11:31:53

by Janusz Dziedzic

[permalink] [raw]
Subject: Re: WLAN drivers provided by Realtek do not work with backports (cfg80211 module not compatible)

On 11 January 2016 at 12:02, Bartlomiej Grzeskowiak
<[email protected]> wrote:
> We use 8192cu and 8811AU provided by Realtek. Our kernel is 3.10.
> We would like to add parallel support for ath10k_pci from backports.
>
> However after inserting compat.ko, cfg80211.ko and mac80211.ko from
> backports, 8192cu.ko and 8821au.ko terminate with following message:
> [ 512.188364] 8192cu: Unknown symbol wiphy_new (err 0)
> [ 512.188481] 8192cu: Unknown symbol cfg80211_send_disassoc (err 0)
> [ 512.188554] 8192cu: Unknown symbol cfg80211_send_rx_assoc (err 0)
> [ 512.188607] 8192cu: Unknown symbol cfg80211_inform_bss_frame (err 0)
>
Seems they were renamed/cleaned in patch:

cfg80211/mac80211: clean up cfg80211 SME APIs

so, newest cfg80211.ko don't have them.

Patch for 8192cu seems to be required - at least to use this new API.

BR
Janusz

> Those interfaces are exported when I load cfg80211.ko compiled from kernel 3.10.
> But I can not see them in cfg80211.ko provided by backports.
>
> Do you know this problem ?
> Is there any easy way to solve this issue ?
>
> BR
> Bartek
> --
> To unsubscribe from this list: send the line "unsubscribe linux-wireless" in
> the body of a message to [email protected]
> More majordomo info at http://vger.kernel.org/majordomo-info.html