linux-image-2.6.15-13-powerpc breaks sleep on ibook g4

I have been running Dapper on my 1 GHz iBook G4. The latest kernel update linux-image-2.6.15-13-powerpc breaks sleep:

Jan 21 18:10:38 fuzz kernel: [ 135.734985] Unable to handle kernel paging request for data at address 0x000000b0
Jan 21 18:10:38 fuzz kernel: [ 135.735300] Faulting instruction address: 0xda622338
Jan 21 18:10:38 fuzz kernel: [ 135.735482] Oops: Kernel access of bad area, sig: 11 [#2]
Jan 21 18:10:38 fuzz kernel: [ 135.735671] Modules linked in: binfmt_misc rfcomm l2cap bluetooth ipv6 cpufreq_powersave cpufreq_stats cpufreq_userspace cpufreq_ondemand cpufreq_conservative radeon drm autofs4 ieee80211 ieee80211_crypt dm_mod md_mod therm_adt746x sr_mod i2c_keywest snd_powermac snd_pcm_oss snd_mixer_oss snd_pcm snd_timer snd soundcore snd_page_alloc sbp2 scsi_mod apm_emu yenta_socket rsrc_nonstatic pcmcia_core sungem sungem_phy ohci1394 ieee1394 uninorth_agp agpgart tsdev evdev reiserfs ehci_hcd ohci_hcd usbcore ide_disk ide_cd cdrom capability commoncap
Jan 21 18:10:38 fuzz kernel: [ 135.738089] NIP: DA622338 LR: DA64D7A0 CTR: DA64DC70
Jan 21 18:10:38 fuzz kernel: [ 135.738265] REGS: d4901d00 TRAP: 0300 Not tainted (2.6.15-13-powerpc)
Jan 21 18:10:38 fuzz kernel: [ 135.738493] MSR: 00009032 <EE,ME,IR,DR> CR: 22000422 XER: 20000000
Jan 21 18:10:38 fuzz kernel: [ 135.738831] DAR: 000000B0, DSISR: 40000000
Jan 21 18:10:38 fuzz kernel: [ 135.738978] TASK = d7f1f2f0[3456] 'pbbuttonsd' THREAD: d4900000
Jan 21 18:10:38 fuzz kernel: [ 135.739180] GPR00: DA64D7A0 D4901DB0 D7F1F2F0 00000000 D4901DF8 00000000 D4901DB4 000004E7
Jan 21 18:10:38 fuzz kernel: [ 135.739610] GPR08: D7CB2E78 DA660000 C0000000 C0340000 00000040 1002C848 100D0000 100D0000
Jan 21 18:10:38 fuzz kernel: [ 135.740040] GPR16: 00000000 100EC538 100D0000 100B0000 100D0000 10010000 10010000 C0320000
Jan 21 18:10:38 fuzz kernel: [ 135.740470] GPR24: 7FBDBCE0 FFFFFFFF 00000004 C02C3E30 00000002 00000000 00000000 D7CFE000
Jan 21 18:10:38 fuzz kernel: [ 135.740914] NIP [DA622338] snd_pcm_suspend_all+0x18/0xb0 [snd_pcm]
Jan 21 18:10:38 fuzz kernel: [ 135.741202] LR [DA64D7A0] snd_pmac_suspend+0x40/0xb0 [snd_powermac]
Jan 21 18:10:38 fuzz kernel: [ 135.741465] Call Trace:
Jan 21 18:10:38 fuzz kernel: [ 135.741559] [D4901DD0] [DA64D7A0] snd_pmac_suspend+0x40/0xb0 [snd_powermac]
Jan 21 18:10:38 fuzz kernel: [ 135.741842] [D4901DF0] [DA64DCCC] snd_pmac_sleep_notify+0x5c/0x90 [snd_powermac]
Jan 21 18:10:38 fuzz kernel: [ 135.742138] [D4901E00] [C01AA858] broadcast_sleep+0x48/0xd0
Jan 21 18:10:38 fuzz kernel: [ 135.742369] [D4901E20] [C01AD3C8] pmac_suspend_devices+0x38/0x190
Jan 21 18:10:38 fuzz kernel: [ 135.742616] [D4901E40] [C01ADB08] pmu_ioctl+0x348/0x980
Jan 21 18:10:38 fuzz kernel: [ 135.742831] [D4901ED0] [C0097DF4] do_ioctl+0x84/0x90
Jan 21 18:10:38 fuzz kernel: [ 135.743040] [D4901EE0] [C0097E8C] vfs_ioctl+0x8c/0x4b0
Jan 21 18:10:38 fuzz kernel: [ 135.743251] [D4901F10] [C0098344] sys_ioctl+0x94/0xb0
Jan 21 18:10:38 fuzz kernel: [ 135.743460] [D4901F40] [C00115EC] ret_from_syscall+0x0/0x4c
Jan 21 18:10:38 fuzz kernel: [ 135.743690] --- Exception: c01 at 0xfd812d8
Jan 21 18:10:38 fuzz kernel: [ 135.743864] LR = 0xfe045fc
Jan 21 18:10:38 fuzz kernel: [ 135.743976] Instruction dump:
Jan 21 18:10:38 fuzz kernel: [ 135.744141] bba10014 38210020 7c0803a6 4e800020 60000000 60000000 7c0802a6 9421ffe0
Jan 21 18:10:38 fuzz kernel: [ 135.744538] 90010024 bfa10014 7c7e1b78 3ba00000 <83fe00b0> 2f9f0000 409e001c 4800005c