ath5k: invalid hw_rix with 64 stations.

[Ben Greear <greearb@candelatech.com>]

We were testing with 64 virtual stations running WPA, with
a single instance of supplicant controlling all interfaces and
the scan-sharing enabled.  It was running clean w/out encryption
(and w/out supplicant).

We see a large number of these types of warnings.  We had a proprietary
module loaded, but it was not in active use.  We're going to reproduce
without it, but in the meantime, here is a representative trace:

Dec  1 16:35:23 localhost kernel: ------------[ cut here ]------------
Dec  1 16:35:23 localhost kernel: WARNING: at /home/greearb/git/linux.wireless-testing-ct/drivers/net/wireless/ath/ath5k/base.c:620 
ath5k_hw_to_driver_rix+0x5b/0x5f [ath5k]()
Dec  1 16:35:23 localhost kernel: Hardware name:
Dec  1 16:35:23 localhost kernel: invalid hw_rix: 1b
Dec  1 16:35:23 localhost kernel: Modules linked in: 8021q garp stp llc fuse michael_mic macvlan wanlink(P) pktgen w83627hf hwmon_vid hwmon nfs lockd fscache 
nfs_acl auth_rpcgss sunrpc ipv6 dm_multipath uinput arc4 ecb ath5k ath mac80211 cfg80211 e1000e i2c_i801 e100 output iTCO_wdt iTCO_vendor_support mii i2c_core 
serio_raw pcspkr ata_generic pata_acpi [last unloaded: ipt_addrtype]
Dec  1 16:35:23 localhost kernel: Pid: 2298, comm: clock-applet Tainted: P            2.6.37-rc4-wl+ #9
Dec  1 16:35:23 localhost kernel: Call Trace:
Dec  1 16:35:23 localhost kernel: [<8043144d>] warn_slowpath_common+0x77/0x8c
Dec  1 16:35:23 localhost kernel: [<f8663994>] ? ath5k_hw_to_driver_rix+0x5b/0x5f [ath5k]
Dec  1 16:35:23 localhost kernel: [<f8663994>] ? ath5k_hw_to_driver_rix+0x5b/0x5f [ath5k]
Dec  1 16:35:23 localhost kernel: [<804314de>] warn_slowpath_fmt+0x2e/0x30
Dec  1 16:35:23 localhost kernel: [<f8663994>] ath5k_hw_to_driver_rix+0x5b/0x5f [ath5k]
Dec  1 16:35:23 localhost kernel: [<f8663ba5>] ath5k_tasklet_tx+0x1ab/0x2f0 [ath5k]
Dec  1 16:35:23 localhost kernel: [<80435948>] tasklet_action+0x78/0xc1
Dec  1 16:35:23 localhost kernel: [<80436034>] __do_softirq+0x75/0x121
Dec  1 16:35:23 localhost kernel: [<80435fbf>] ? __do_softirq+0x0/0x121
Dec  1 16:35:23 localhost kernel: <IRQ>  [<80435f0c>] ? irq_exit+0x29/0x5d
Dec  1 16:35:23 localhost kernel: [<804042c9>] ? do_IRQ+0x8e/0xa2
Dec  1 16:35:23 localhost kernel: [<80403729>] ? common_interrupt+0x29/0x30
Dec  1 16:35:23 localhost kernel: ---[ end trace 5cdceca81890f6e3 ]---

Thanks,
Ben

-- 
Ben Greear <greearb@candelatech.com>
Candela Technologies Inc  http://www.candelatech.com