[ath9k-devel] ath9k warning on AR9160 and AR9220 chipset with 2.6.36 kernel

[Peizhao Hu <peiworld@gmail.com>]

Hi,

The firmware was built using OpenWRT svn trunk 24136 that uses 
compat-wireless-2010-11-20 and 2.6.36.1 kernel.

The warning message comes right after I configured the radio and bring 
it up in adhoc mode.

regards,

Peizhao


On 25/11/10 15:05, Mohammed Shafi wrote:
> On Thu, Nov 25, 2010 at 9:27 AM, Peizhao Hu<peiworld@gmail.com>  wrote:
>    
>> Hi
>>
>> I am wondering whether this problem is due to the OpenWRT or an issue of
>> the ATH9k.
>>
>> -----------[ cut here ]------------
>> WARNING: at
>> /root/openwrt-svn-repo/routerStation/active_trunk/build_dir/linux-ar71xx_generic/compat-wireless-2010-11-20/drivers/net/wireless/ath/ath9k/recv.c:532
>> ath_stoprecv+0x90/0xa8 [ath9k]()
>> Could not stop RX, we could be confusing the DMA engine when we start RX up
>> Modules linked in: ath9k ath9k_common ath9k_hw mac80211 ath ohci_hcd
>> ath_pci ath_hal(P) nf_nat_tftp nf_conntrack_tftp nf_nat_irc
>> nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp ipt_MASQUERADE iptable_nat
>> nf_nat xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4
>> nf_conntrack ehci_hcd ipt_REJECT xt_TCPMSS ipt_LOG xt_comment
>> xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables
>> xt_tcpudp x_tables nfs loop lockd sunrpc usbcore nls_base crc_ccitt
>> cfg80211 compat arc4 aes_generic deflate ecb cbc leds_gpio
>> button_hotplug gpio_buttons input_polldev input_core [last unloaded: ath]
>> Call Trace:
>> [<800696cc>] dump_stack+0x8/0x34
>> [<8007dedc>] warn_slowpath_common+0x78/0xa4
>> [<8007df90>] warn_slowpath_fmt+0x2c/0x38
>> [<82d075b0>] ath_stoprecv+0x90/0xa8 [ath9k]
>> [<82d04138>] ath_set_channel+0xa4/0x740 [ath9k]
>> [<82d0503c>] ath_radio_enable+0x55c/0x680 [ath9k]
>> [<82f45414>] ieee80211_scan_work+0x30c/0x524 [mac80211]
>> [<800910bc>] process_one_work+0x2c0/0x460
>> [<80091d88>] worker_thread+0x240/0x434
>> [<80096a3c>] kthread+0x80/0x8c
>> [<8006dde4>] kernel_thread_helper+0x10/0x18
>>
>> ---[ end trace 5948ecf07cb92b59 ]---
>>
>>
>> ------------[ cut here ]------------
>> WARNING: at
>> /root/openwrt-svn-repo/routerStationPro/trunk_23933/build_dir/linux-ar71xx_generic/compat-wireless-2010-11-20/drivers/net/wireless/ath/ath9k/recv.c:532
>> ath_stoprecv+0x90/0xa8 [ath9k]()
>> Could not stop RX, we could be confusing the DMA engine when we start RX up
>> Modules linked in: ath9k ath9k_common ath9k_hw mac80211 ath ohci_hcd
>> ath_pci ath_hal(P) nf_nat_tftp nf_conntrack_tftp nf_nat_irc
>> nf_conntrack_irc nf_nat_ftp nf_conntrack_ftp xt_string xt_layer7
>> xt_quota xt_pkttype xt_owner ipt_MASQUERADE iptable_nat nf_nat
>> xt_NOTRACK iptable_raw xt_state nf_conntrack_ipv4 nf_defrag_ipv4
>> nf_conntrack ehci_hcd ipt_REJECT xt_TCPMSS ipt_LOG xt_comment
>> xt_multiport xt_mac xt_limit iptable_mangle iptable_filter ip_tables
>> xt_tcpudp x_tables nfs loop lockd sunrpc usbcore ts_fsm ts_bm ts_kmp
>> nls_base cfg80211 compat arc4 aes_generic deflate ecb cbc leds_gpio
>> button_hotplug gpio_buttons input_polldev input_core [last unloaded: ath]
>> Call Trace:
>> [<800696cc>] dump_stack+0x8/0x34
>> [<8007df3c>] warn_slowpath_common+0x78/0xa4
>> [<8007dff0>] warn_slowpath_fmt+0x2c/0x38
>> [<869e75b0>] ath_stoprecv+0x90/0xa8 [ath9k]
>> [<869e4138>] ath_set_channel+0xa4/0x740 [ath9k]
>> [<869e503c>] ath_radio_enable+0x55c/0x680 [ath9k]
>> [<87385414>] ieee80211_scan_work+0x30c/0x524 [mac80211]
>> [<8009111c>] process_one_work+0x2c0/0x460
>> [<80091de8>] worker_thread+0x240/0x434
>> [<80096a9c>] kthread+0x80/0x8c
>> [<8006dde4>] kernel_thread_helper+0x10/0x18
>>
>> ---[ end trace d0a293f7237f639f ]---
>>      
> Under what scenario we are seeing this warning ?,is this still
> happening with the latest compat.
>    
>>
>> regards
>>
>> Peizhao
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>>
>>