Description of problem:
modprobe brcmfmac
modprobe -r brcmfmac

Additional info:
WARNING: at drivers/base/driver.c:207 driver_unregister+0x8a/0xa0()
Hardware name: Latitude E6410
Unexpected driver unregister!
Modules linked in: brcmfmac(-) brcmutil fuse rfcomm bnep nf_conntrack_ipv4 nf_defrag_ipv4 ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 xt_state nf_conntrack ip6table_filter ip6_tables snd_hda_codec_hdmi arc4 snd_hda_codec_idt snd_hda_intel snd_usb_audio iwl4965 snd_hda_codec iwlegacy uvcvideo snd_usbmidi_lib btusb mac80211 videobuf2_vmalloc videobuf2_memops videobuf2_core videodev snd_hwdep snd_rawmidi iTCO_wdt bluetooth iTCO_vendor_support cfg80211 lpc_ich snd_seq snd_seq_device snd_pcm snd_page_alloc snd_timer media i2c_i801 mfd_core snd ppdev coretemp e1000e dell_laptop intel_ips dell_wmi rfkill sparse_keymap soundcore dcdbas kvm_intel parport_pc parport kvm microcode uinput crc32c_intel ghash_clmulni_intel firewire_ohci firewire_core sdhci_pci crc_itu_t sdhci mmc_core yenta_socket wmi i915 video i2c_algo_bit drm_kms_helper drm i2c_core
Pid: 1600, comm: modprobe Not tainted 3.7.5-101.fc17.x86_64 #1
Call Trace:
 [<ffffffff8105e69f>] warn_slowpath_common+0x7f/0xc0
 [<ffffffff8105e796>] warn_slowpath_fmt+0x46/0x50
 [<ffffffff813d041a>] driver_unregister+0x8a/0xa0
 [<ffffffffa011964a>] sdio_unregister_driver+0x1a/0x20 [mmc_core]
 [<ffffffffa05e6615>] brcmf_sdio_exit+0x15/0x30 [brcmfmac]
 [<ffffffffa05e9108>] brcmfmac_module_exit+0x15/0xf0d [brcmfmac]
 [<ffffffff810c0730>] sys_delete_module+0x170/0x2d0
 [<ffffffff8107eaec>] ? task_work_run+0xac/0xe0
 [<ffffffff816353de>] ? do_page_fault+0xe/0x10
 [<ffffffff81639a19>] system_call_fastpath+0x16/0x1b