brcmsmac: call bcma_core_pci_power_save() from non-atomic context
This patch adds explicit call to bcma_core_pci_power_save() from
a non-atomic context resolving 'scheduling while atomic' issue.
[ 13.224317] BUG: scheduling while atomic: dhcpcd/1800/0x00000202
[ 13.224322] Modules linked in: brcmsmac nouveau coretemp kvm_intel kvm cordic brcmutil bcma dell_wmi atl1c ttm mxm_wmi wmi
[ 13.224354] CPU: 0 PID: 1800 Comm: dhcpcd Tainted: G W 3.11.0-wl #1
[ 13.224359] Hardware name: Alienware M11x R2/M11x R2, BIOS A04 11/23/2010
[ 13.224363]
ffff880177c12c40 ffff880170fd1968 ffffffff8169af5b 0000000000000007
[ 13.224374]
ffff880170fd1ad0 ffff880170fd1978 ffffffff81697ee2 ffff880170fd19f8
[ 13.224383]
ffffffff816a19f5 00000000000f4240 000000000000d080 ffff880170fd1fd8
[ 13.224391] Call Trace:
[ 13.224399] [<
ffffffff8169af5b>] dump_stack+0x4f/0x84
[ 13.224403] [<
ffffffff81697ee2>] __schedule_bug+0x43/0x51
[ 13.224409] [<
ffffffff816a19f5>] __schedule+0x6e5/0x810
[ 13.224412] [<
ffffffff816a1c34>] schedule+0x24/0x70
[ 13.224416] [<
ffffffff816a04fc>] schedule_hrtimeout_range_clock+0x10c/0x150
[ 13.224420] [<
ffffffff810684e0>] ? update_rmtp+0x60/0x60
[ 13.224424] [<
ffffffff8106915f>] ? hrtimer_start_range_ns+0xf/0x20
[ 13.224429] [<
ffffffff816a054e>] schedule_hrtimeout_range+0xe/0x10
[ 13.224432] [<
ffffffff8104f6fb>] usleep_range+0x3b/0x40
[ 13.224437] [<
ffffffffa003733a>] bcma_pcie_mdio_read.isra.5+0x8a/0x100 [bcma]
[ 13.224442] [<
ffffffffa00374a5>] bcma_pcie_mdio_writeread.isra.6.constprop.13+0x25/0x30 [bcma]
[ 13.224448] [<
ffffffffa00374f9>] bcma_core_pci_power_save+0x49/0x80 [bcma]
[ 13.224452] [<
ffffffffa003765d>] bcma_core_pci_up+0x2d/0x60 [bcma]
[ 13.224460] [<
ffffffffa03dc17c>] brcms_c_up+0xfc/0x430 [brcmsmac]
[ 13.224467] [<
ffffffffa03d1a7d>] brcms_up+0x1d/0x20 [brcmsmac]
[ 13.224473] [<
ffffffffa03d2498>] brcms_ops_start+0x298/0x340 [brcmsmac]
[ 13.224478] [<
ffffffff81600a12>] ? cfg80211_netdev_notifier_call+0xd2/0x5f0
[ 13.224483] [<
ffffffff815fa53d>] ? packet_notifier+0xad/0x1d0
[ 13.224487] [<
ffffffff81656e75>] ieee80211_do_open+0x325/0xf80
[ 13.224491] [<
ffffffff8106ac09>] ? __raw_notifier_call_chain+0x9/0x10
[ 13.224495] [<
ffffffff81657b41>] ieee80211_open+0x71/0x80
[ 13.224498] [<
ffffffff81526267>] __dev_open+0x87/0xe0
[ 13.224502] [<
ffffffff8152650c>] __dev_change_flags+0x9c/0x180
[ 13.224505] [<
ffffffff815266a3>] dev_change_flags+0x23/0x70
[ 13.224509] [<
ffffffff8158cd68>] devinet_ioctl+0x5b8/0x6a0
[ 13.224512] [<
ffffffff8158d5c5>] inet_ioctl+0x75/0x90
[ 13.224516] [<
ffffffff8150b38b>] sock_do_ioctl+0x2b/0x70
[ 13.224519] [<
ffffffff8150b681>] sock_ioctl+0x71/0x2a0
[ 13.224523] [<
ffffffff8114ed47>] do_vfs_ioctl+0x87/0x520
[ 13.224528] [<
ffffffff8113f159>] ? ____fput+0x9/0x10
[ 13.224533] [<
ffffffff8106228c>] ? task_work_run+0x9c/0xd0
[ 13.224537] [<
ffffffff8114f271>] SyS_ioctl+0x91/0xb0
[ 13.224541] [<
ffffffff816aa252>] system_call_fastpath+0x16/0x1b
Cc: <stable@vger.kernel.org> # 3.11.x
Cc: Tod Jackson <tod.jackson@gmail.com>
Cc: Joe Perches <joe@perches.com>
Cc: Rafal Milecki <zajec5@gmail.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Hante Meuleman <meuleman@broadcom.com>
Signed-off-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>