ath6kl warning with stable compat-wireless-3.3-rc1-2

Just doing some testing of compat-wireless-3.3-rc1-2 with ath6kl built against 2.6.35.3 for arm freescale imx51. Every once in a while I get the below warning. ath6kl seams stable regardless.

[  524.161702] WARNING: at /home/jbagg/Projects/NMB/compat-wireless-3.3-rc1-2/drivers/net/wireless/ath/ath6kl/sdio.c:474 sdio_irq_thread+0x104/0x23c()
[  524.174936] Modules linked in: ath6kl cfg80211 compat
[  524.180085] [<80027508>] (unwind_backtrace+0x0/0xf0) from [<80046368>] (warn_slowpath_common+0x4c/0x64)
[  524.189508] [<80046368>] (warn_slowpath_common+0x4c/0x64) from [<80046398>] (warn_slowpath_null+0x18/0x1c)
[  524.199189] [<80046398>] (warn_slowpath_null+0x18/0x1c) from [<802470e8>] (sdio_irq_thread+0x104/0x23c)
[  524.208611] [<802470e8>] (sdio_irq_thread+0x104/0x23c) from [<8005c19c>] (kthread+0x78/0x80)
[  524.217065] [<8005c19c>] (kthread+0x78/0x80) from [<800239e0>] (kernel_thread_exit+0x0/0x8)
[  524.225435] ---[ end trace 7577e74177ef57d5 ]---

Also tried compat-wireless-2012-01-23

[  431.658564] WARNING: at /home/jbagg/Projects/NMB/compat-wireless-2012-01-23/drivers/net/wireless/ath/ath6kl/sdio.c:474 sdio_irq_thread+0x104/0x23c()
[  431.671885] Modules linked in: ath6kl cfg80211 compat
[  431.677024] [<80027508>] (unwind_backtrace+0x0/0xf0) from [<80046368>] (warn_slowpath_common+0x4c/0x64)
[  431.686445] [<80046368>] (warn_slowpath_common+0x4c/0x64) from [<80046398>] (warn_slowpath_null+0x18/0x1c)
[  431.696168] [<80046398>] (warn_slowpath_null+0x18/0x1c) from [<802470e8>] (sdio_irq_thread+0x104/0x23c)
[  431.705596] [<802470e8>] (sdio_irq_thread+0x104/0x23c) from [<8005c19c>] (kthread+0x78/0x80)
[  431.714062] [<8005c19c>] (kthread+0x78/0x80) from [<800239e0>] (kernel_thread_exit+0x0/0x8)
[  431.722431] ---[ end trace 8612e47b83214f55 ]---

Jon