Commit Graph

34835 Commits

Author SHA1 Message Date
Felix Fietkau 1630d25fd0 ath9k_hw: disable PA linearization for AR9462
Support for it is incomplete

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-05 14:53:32 -04:00
Felix Fietkau 381c726c09 ath9k_hw: calibrate PA input for PA predistortion
Re-train if the calibrated PA linearization curve is out of bounds
(affects AR933x and AR9485).

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-05 14:53:31 -04:00
Felix Fietkau 2622895993 ath9k_hw: clear the AM2PM predistortion mask on AR933x
That predistortion type is not supported

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-05 14:53:31 -04:00
Felix Fietkau 280b9a9de1 ath9k_hw: do not enable the MIB interrupt in the interrupt mask register
The interrupt is no longer handling it. While it shouldn't fire (wraparound
is highly unlikely), the consequences would be fatal (interrupt storm).
Disable the interrupt to prevent that from happening.

Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-05 14:53:30 -04:00
Marc Kleine-Budde d0f21fe658 rt2x00: fix voltage setting for RT3572/RT3592
According to the vendor driver v2.6.0.1, during the rf register init the SRAM
voltage should be increased to 1.35V and after 1ms decreased back to 1.2V. This
patch adds the field setting of LDO_CFG0_LDO_CORE_VLEVEL accordingly.

Cc: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@blackshift.org>
Acked-by: Ivo van Doorn <IvDoorn@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-05 14:53:30 -04:00
Stone Piao da25186fc6 mwifiex: fix skb length issue when send a command to firmware
When we send a command to firmware, we assumed that cmd_size
will be always less than or equal to the structure size of
host_cmd_ds_command. However, this is no longer true after
we added AP support. There are some AP commands that Custom
IE TLVs are included in command buffer, hence the cmd_size
gets enlarged by the TLV data. We need to increase the skb
length for the extra data.

Signed-off-by: Stone Piao <piaoyun@marvell.com>
Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Amitkumar Karwar <akarwar@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-09-05 14:53:29 -04:00
Vladimir Zapolskiy ea2d218308 brcm80211: smac: set interface down on reset
This change marks interface as down on reset, otherwise the driver can't
reinitialize itself properly.

Without the change a transient problem turns out to be critical and leads
to inavailability to reset the driver without brcmsmac module unload/load
cycle:

    ieee80211 phy0: wl0: PSM microcode watchdog fired at 5993 (seconds). Resetting.
    brcms_c_dpc : PSM Watchdog, chipid 0xa8d9, chiprev 0x1
    ieee80211 phy0: wl0: fatal error, reinitializing
    ieee80211 phy0: Hardware restart was requested
    ieee80211 phy0: brcms_ops_start: brcms_up() returned -19

Signed-off-by: Vladimir Zapolskiy <vz@mleia.com>
Cc: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-22 14:06:55 -04:00
Johannes Berg 4fc79db178 iwlwifi: protect SRAM debugfs
If the device is not started, we can't read its
SRAM and attempting to do so will cause issues.
Protect the debugfs read.

Cc: stable@vger.kernel.org
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-21 15:01:45 -04:00
Johannes Berg 94543a8d4f iwlwifi: fix flow handler debug code
iwl_dbgfs_fh_reg_read() can cause crashes and/or
BUG_ON in slub because the ifdefs are wrong, the
code in iwl_dump_fh() should use DEBUGFS, not
DEBUG to protect the buffer writing code.

Also, while at it, clean up the arguments to the
function, some code and make it generally safer.

Cc: stable@vger.kernel.org
Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-21 15:01:44 -04:00
Julia Lawall 7b4e6cfbae drivers/net/wireless/ipw2x00/ipw2100.c: introduce missing initialization
The result of one call to a function is tested, and then at the second call
to the same function, the previous result, and not the current result, is
tested again.

Also changed &bssid to bssid, at the suggestion of Stanislav Yakovlev.

The semantic match that finds the first problem is as follows:
(http://coccinelle.lip6.fr/)

// <smpl>
@@
expression ret;
identifier f;
statement S1,S2;
@@

*ret = f(...);
if (\(ret != 0\|ret < 0\|ret == NULL\)) S1
... when any
*f(...);
if (\(ret != 0\|ret < 0\|ret == NULL\)) S2
// </smpl>

Signed-off-by: Julia Lawall <Julia.Lawall@lip6.fr>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-21 15:01:44 -04:00
Thomas Huehn 3a245cbef6 ath5k: fix wrong max power per rate eeprom reads for 802.11a
This patch reduces the per rate target power eeprom reads for
AR5K_EEPROM_MODE_11A from 10 to 8, as there are only 8 valid
power curve entries on the eeprom. The former 10 reads lead to
equal max power limits per rate and this causes an increasing
distortion for all rates above 24 MBit and leads to a needless
poor performance in 802.11a mode.

Signed-off-by: Thomas Huehn <thomas@net.t-labs.tu-berlin.de>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-21 14:58:20 -04:00
Bob Copeland 7dd6753f6d ath5k: fix spin_lock_irqsave/spin_lock_bh nesting in mesh
Lockdep found an inconsistent lock state when joining a mesh with
ath5k.  The problem is that ath5k takes the lock for its beacon state,
ah->block, with spin_lock_irqsave(), while mesh internally takes the
sync_offset_lock with spin_lock_bh() in mesh_sync_offset_adjust_tbtt(),
which in turn is called under ah->block.

This could deadlock if the beacon tasklet was run on the processor
that held the beacon lock during the do_softirq() in spin_unlock_bh().

We probably shouldn't hold the lock around the callbacks, but the
easiest fix is to switch to spin_lock_bh for ah->block: it doesn't
need interrupts disabled anyway as the data in question is only accessed
in softirq or process context.

Fixes the following lockdep warning:

[  446.892304] WARNING: at kernel/softirq.c:159 _local_bh_enable_ip+0x38/0xa6()
[  446.892306] Hardware name: MacBook1,1
[  446.892309] Modules linked in: tcp_lp fuse sunrpc cpufreq_ondemand acpi_cpufreq mperf ip6t_REJECT nf_conntrack_ipv6 nf_defrag_ipv6 nf_conntrack_ipv4 ip6table_filter nf_defrag_ipv4 xt_state nf_conntrack ip6_tables ext2 arc4 btusb bluetooth snd_hda_codec_idt snd_hda_intel carl9170 snd_hda_codec coretemp joydev ath5k snd_hwdep snd_seq isight_firmware ath snd_seq_device snd_pcm applesmc appletouch mac80211 input_polldev snd_timer microcode cfg80211 snd lpc_ich pcspkr i2c_i801 mfd_core soundcore rfkill snd_page_alloc sky2 tpm_infineon virtio_net kvm_intel kvm i915 drm_kms_helper drm i2c_algo_bit i2c_core video
[  446.892385] Pid: 1892, comm: iw Not tainted 3.6.0-rc1-wl+ #296
[  446.892387] Call Trace:
[  446.892394]  [<c0432958>] warn_slowpath_common+0x7c/0x91
[  446.892398]  [<c04399d7>] ? _local_bh_enable_ip+0x38/0xa6
[  446.892403]  [<c04399d7>] ? _local_bh_enable_ip+0x38/0xa6
[  446.892459]  [<f7f9ae3b>] ? mesh_sync_offset_adjust_tbtt+0x95/0x99 [mac80211]
[  446.892464]  [<c043298f>] warn_slowpath_null+0x22/0x24
[  446.892468]  [<c04399d7>] _local_bh_enable_ip+0x38/0xa6
[  446.892473]  [<c0439a52>] local_bh_enable_ip+0xd/0xf
[  446.892479]  [<c088004f>] _raw_spin_unlock_bh+0x34/0x37
[  446.892527]  [<f7f9ae3b>] mesh_sync_offset_adjust_tbtt+0x95/0x99 [mac80211]
[  446.892569]  [<f7f7650f>] ieee80211_beacon_get_tim+0x28f/0x4e0 [mac80211]
[  446.892575]  [<c047ceeb>] ? trace_hardirqs_on_caller+0x10e/0x13f
[  446.892591]  [<f7fdc541>] ath5k_beacon_update+0x40/0x26b [ath5k]
[  446.892597]  [<c047ad67>] ? lock_acquired+0x1f5/0x21e
[  446.892612]  [<f7fdf9fb>] ? ath5k_bss_info_changed+0x167/0x1b2 [ath5k]
[  446.892617]  [<c087f9ea>] ? _raw_spin_lock_irqsave+0x78/0x82
[  446.892632]  [<f7fdf9fb>] ? ath5k_bss_info_changed+0x167/0x1b2 [ath5k]
[  446.892647]  [<f7fdfa09>] ath5k_bss_info_changed+0x175/0x1b2 [ath5k]
[  446.892651]  [<c0479dd4>] ? lock_is_held+0x73/0x7b
[  446.892662]  [<c0458fd5>] ? __might_sleep+0xa7/0x17a
[  446.892698]  [<f7f5d8f7>] ieee80211_bss_info_change_notify+0x1ed/0x21a [mac80211]
[  446.892703]  [<c0449875>] ? queue_work+0x24/0x32
[  446.892718]  [<f7fdf894>] ? ath5k_configure_filter+0x163/0x163 [ath5k]
[  446.892766]  [<f7f95fa4>] ieee80211_start_mesh+0xb9/0xbd [mac80211]
[  446.892806]  [<f7f6e610>] ieee80211_join_mesh+0x10c/0x116 [mac80211]
[  446.892834]  [<f7a96b90>] __cfg80211_join_mesh+0x176/0x1b3 [cfg80211]
[  446.892855]  [<f7a96c1c>] cfg80211_join_mesh+0x4f/0x6a [cfg80211]
[  446.892875]  [<f7a89891>] nl80211_join_mesh+0x1de/0x1ed [cfg80211]
[  446.892908]  [<f7a8db99>] ? nl80211_set_wiphy+0x4cf/0x4cf [cfg80211]
[  446.892919]  [<c07cfa36>] genl_rcv_msg+0x1d5/0x1f3
[  446.892940]  [<c07cf861>] ? genl_rcv+0x25/0x25
[  446.892946]  [<c07cf009>] netlink_rcv_skb+0x37/0x78
[  446.892950]  [<c07cf85a>] genl_rcv+0x1e/0x25
[  446.892955]  [<c07cebf3>] netlink_unicast+0xc3/0x12d
[  446.892959]  [<c07cee46>] netlink_sendmsg+0x1e9/0x213
[  446.892966]  [<c079f282>] sock_sendmsg+0x79/0x96
[  446.892972]  [<c04eb90d>] ? might_fault+0x9d/0xa3
[  446.892978]  [<c07a81d8>] ? copy_from_user+0x8/0xa
[  446.892983]  [<c07a852c>] ? verify_iovec+0x43/0x77
[  446.892987]  [<c079f4d8>] __sys_sendmsg+0x180/0x215
[  446.892993]  [<c045f107>] ? sched_clock_cpu+0x134/0x144
[  446.892997]  [<c047992f>] ? trace_hardirqs_off+0xb/0xd
[  446.893002]  [<c047bf88>] ? __lock_acquire+0x46b/0xb6e
[  446.893006]  [<c047992f>] ? trace_hardirqs_off+0xb/0xd
[  446.893010]  [<c045f149>] ? local_clock+0x32/0x49
[  446.893015]  [<c0479ec1>] ? lock_release_holdtime.part.9+0x4b/0x51
[  446.893020]  [<c0479dd4>] ? lock_is_held+0x73/0x7b
[  446.893025]  [<c050d127>] ? fcheck_files+0x97/0xcd
[  446.893029]  [<c050d4df>] ? fget_light+0x2d/0x81
[  446.893034]  [<c07a01f3>] sys_sendmsg+0x3b/0x52
[  446.893038]  [<c07a07b4>] sys_socketcall+0x238/0x2a2
[  446.893044]  [<c0885edf>] sysenter_do_call+0x12/0x38
[  446.893047] ---[ end trace a9af5998f929270f ]---
[  447.627222]
[  447.627232] =================================
[  447.627237] [ INFO: inconsistent lock state ]
[  447.627244] 3.6.0-rc1-wl+ #296 Tainted: G        W
[  447.627248] ---------------------------------
[  447.627253] inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage.
[  447.627260] swapper/0/0 [HC0[0]:SC1[1]:HE1:SE0] takes:
[  447.627264]  (&(&ah->block)->rlock){+.?...}, at: [<f7fdd2d1>] ath5k_tasklet_beacon+0x91/0xa7 [ath5k]
[  447.627299] {SOFTIRQ-ON-W} state was registered at:
[  447.627304]   [<c047cdbf>] mark_held_locks+0x59/0x77
[  447.627316]   [<c047ceeb>] trace_hardirqs_on_caller+0x10e/0x13f
[  447.627324]   [<c047cf27>] trace_hardirqs_on+0xb/0xd
[  447.627332]   [<c0439a3d>] _local_bh_enable_ip+0x9e/0xa6
[  447.627342]   [<c0439a52>] local_bh_enable_ip+0xd/0xf
[  447.627349]   [<c088004f>] _raw_spin_unlock_bh+0x34/0x37
[  447.627359]   [<f7f9ae3b>] mesh_sync_offset_adjust_tbtt+0x95/0x99 [mac80211]
[  447.627451]   [<f7f7650f>] ieee80211_beacon_get_tim+0x28f/0x4e0 [mac80211]
[  447.627526]   [<f7fdc541>] ath5k_beacon_update+0x40/0x26b [ath5k]
[  447.627547]   [<f7fdfa09>] ath5k_bss_info_changed+0x175/0x1b2 [ath5k]
[  447.627569]   [<f7f5d8f7>] ieee80211_bss_info_change_notify+0x1ed/0x21a [mac80211]
[  447.627628]   [<f7f95fa4>] ieee80211_start_mesh+0xb9/0xbd [mac80211]
[  447.627712]   [<f7f6e610>] ieee80211_join_mesh+0x10c/0x116 [mac80211]
[  447.627782]   [<f7a96b90>] __cfg80211_join_mesh+0x176/0x1b3 [cfg80211]
[  447.627816]   [<f7a96c1c>] cfg80211_join_mesh+0x4f/0x6a [cfg80211]
[  447.627845]   [<f7a89891>] nl80211_join_mesh+0x1de/0x1ed [cfg80211]
[  447.627872]   [<c07cfa36>] genl_rcv_msg+0x1d5/0x1f3
[  447.627881]   [<c07cf009>] netlink_rcv_skb+0x37/0x78
[  447.627891]   [<c07cf85a>] genl_rcv+0x1e/0x25
[  447.627898]   [<c07cebf3>] netlink_unicast+0xc3/0x12d
[  447.627907]   [<c07cee46>] netlink_sendmsg+0x1e9/0x213
[  447.627915]   [<c079f282>] sock_sendmsg+0x79/0x96
[  447.627926]   [<c079f4d8>] __sys_sendmsg+0x180/0x215
[  447.627934]   [<c07a01f3>] sys_sendmsg+0x3b/0x52
[  447.627941]   [<c07a07b4>] sys_socketcall+0x238/0x2a2
[  447.627949]   [<c0885edf>] sysenter_do_call+0x12/0x38
[  447.627959] irq event stamp: 1929200
[  447.627963] hardirqs last  enabled at (1929200): [<c043a0e9>] tasklet_hi_action+0x3e/0xbf
[  447.627972] hardirqs last disabled at (1929199): [<c043a0c0>] tasklet_hi_action+0x15/0xbf
[  447.627981] softirqs last  enabled at (1929196): [<c043999d>] _local_bh_enable+0x12/0x14
[  447.627989] softirqs last disabled at (1929197): [<c040443b>] do_softirq+0x63/0xb8
[  447.627999]
[  447.627999] other info that might help us debug this:
[  447.628004]  Possible unsafe locking scenario:
[  447.628004]
[  447.628009]        CPU0
[  447.628012]        ----
[  447.628016]   lock(&(&ah->block)->rlock);
[  447.628023]   <Interrupt>
[  447.628027]     lock(&(&ah->block)->rlock);
[  447.628034]
[  447.628034]  *** DEADLOCK ***

Signed-off-by: Bob Copeland <me@bobcopeland.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-13 15:17:25 -04:00
Lorenzo Bianconi e1352fde56 ath9k: fix decrypt_error initialization in ath_rx_tasklet()
ath_rx_tasklet() calls ath9k_rx_skb_preprocess() and ath9k_rx_skb_postprocess()
in a loop over the received frames. The decrypt_error flag is
initialized to false
just outside ath_rx_tasklet() loop. ath9k_rx_accept(), called by
ath9k_rx_skb_preprocess(),
only sets decrypt_error to true and never to false.
Then ath_rx_tasklet() calls ath9k_rx_skb_postprocess() and passes
decrypt_error to it.
So, after a decryption error, in ath9k_rx_skb_postprocess(), we can
have a leftover value
from another processed frame. In that case, the frame will not be marked with
RX_FLAG_DECRYPTED even if it is decrypted correctly.
When using CCMP encryption this issue can lead to connection stuck
because of CCMP
PN corruption and a waste of CPU time since mac80211 tries to decrypt an already
deciphered frame with ieee80211_aes_ccm_decrypt.
Fix the issue initializing decrypt_error flag at the begging of the
ath_rx_tasklet() loop.

Signed-off-by: Lorenzo Bianconi <lorenzo.bianconi83@gmail.com>
Cc: <stable@kernel.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-13 15:17:24 -04:00
Rajkumar Manoharan e19f15ac64 ath9k: stop btcoex on device suspend
During suspend, the device will be moved to FULLSLEEP state.
As btcoex is never been stopped, the btcoex timer is running
and tries to access hw on fullsleep state. Fix that.

Cc: stable@vger.kernel.org
Signed-off-by: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-10 14:51:29 -04:00
Dan Carpenter 5d774b74ef wireless: at76c50x: signedness bug in at76_dfu_get_state()
This return holds the number of bytes transfered (1 byte) or a negative
error code.  The type should be int instead of u8.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Acked-by: Pavel Roskin <proski@gnu.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-10 14:50:26 -04:00
Alexey Khoroshilov 60f53cf990 rndis_wlan: Fix potential memory leak in update_pmkid()
Do not leak memory by updating pointer with potentially NULL realloc return value.

Found by Linux Driver Verification project (linuxtesting.org).

Signed-off-by: Alexey Khoroshilov <khoroshilov@ispras.ru>
Acked-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-10 14:50:25 -04:00
Felix Fietkau f41a9b3b15 ath9k: fix interrupt storms on queued hardware reset
commit b74713d04e
"ath9k: Handle fatal interrupts properly" introduced a race condition, where
IRQs are being left enabled, however the irq handler returns IRQ_HANDLED
while the reset is still queued without addressing the IRQ cause.
This leads to an IRQ storm that prevents the system from even getting to
the reset code.

Fix this by disabling IRQs in the handler without touching intr_ref_cnt.

Cc: Rajkumar Manoharan <rmanohar@qca.qualcomm.com>
Cc: Sujith Manoharan <c_manoha@qca.qualcomm.com>
Signed-off-by: Felix Fietkau <nbd@openwrt.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-10 14:50:24 -04:00
Johannes Berg 50e2a30cf6 iwlwifi: disable greenfield transmissions as a workaround
There's a bug that causes the rate scaling to get stuck
when it has to use single-stream rates with a peer that
can do GF and SGI; the two are incompatible so we can't
use them together, but that causes the algorithm to not
work at all, it always rejects updates.

Disable greenfield for now to prevent that problem.

Cc: stable@vger.kernel.org
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Tested-by: Cesar Eduardo Barros <cesarb@cesarb.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-06 14:29:59 -04:00
Stanislaw Gruszka deee0214de rt61pci: fix NULL pointer dereference in config_lna_gain
We can not pass NULL libconf->conf->channel to rt61pci_config() as it
is dereferenced unconditionally in rt61pci_config_lna_gain() subroutine.

Resolves:
https://bugzilla.kernel.org/show_bug.cgi?id=44361

Cc: stable@vger.kernel.org
Reported-and-tested-by: <dolohow@gmail.com>
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-06 14:29:58 -04:00
Mohammed Shafi Shajakhan d4e5979c0d ath9k: Add PID/VID support for AR1111
AR1111 is same as AR9485. The h/w
difference between them is quite insignificant,
Felix suggests only very few baseband features
may not be available in AR1111. The h/w code for
AR9485 is already present, so AR1111 should
work fine with the addition of its PID/VID.

Cc: stable@vger.kernel.org [2.6.39+]
Cc: Felix Bitterli <felixb@qca.qualcomm.com>
Reported-by: Tim Bentley <Tim.Bentley@Gmail.com>
Signed-off-by: Mohammed Shafi Shajakhan <mohammed@qca.qualcomm.com>
Tested-by: Tim Bentley <Tim.Bentley@Gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-03 10:11:14 -04:00
Seth Forshee 7f38e5bc93 brcmsmac: use channel flags to restrict OFDM
brcmsmac cannot call freq_reg_info() during channel changes as it does
not hold cfg80211_lock, and as a result it generates a lockdep warning.
freq_reg_info() is being used to determine whether OFDM is allowed on
the current channel, so we can avoid the errant call by using the new
IEEE80211_CHAN_NO_OFDM for this purpose instead.

Reported-by: Josh Boyer <jwboyer@redhat.com>
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-02 13:51:48 -04:00
Daniel Drake 8c1057e43c libertas: fix two memory leaks
The if_sdio_card structure was never being freed, and neither
was the command structure used for association.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-02 13:51:47 -04:00
Woody Hung 16ebd60856 rt2x00 : fix rt3290 resuming failed.
This patch is going to fix the resuming failed from S3/S4
for rt3290 chip.

Signed-off-by: Woody Hung <Woody.Hung@mediatek.com>
Cc: Kevin Chou <kevin.chou@mediatek.com>
Signed-off-by: Chen, Chien-Chia <machen@suse.com>
Reviewed-by: Stanislaw Gruszka <sgruszka@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-02 13:51:47 -04:00
Daniel Drake 9d5d496c34 libertas: don't reset card on error when it is being removed
On an OLPC XO-1.5 we have seen the following situation:
 - the system starts going into suspend
 - no wake params are set, so the mmc layer removes the card
 - during remove, we send a command to the card
 - that command fails, causing if_sdio's reset method to try and remove
   the mmc card in attempt to reset it
 - the mmc layer is not happy about being asked to remove a card that
   it is already removing, and the kernel crashes

While the MMC layer could possibly be taught to behave better here,
it also seems sensible for libertas not to try and reset a card if
we're in the process of removing it anyway.

Signed-off-by: Daniel Drake <dsd@laptop.org>
Acked-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-02 13:51:47 -04:00
Rafał Miłecki 828afd26fe b43: fix logic in GPIO init
Add some comments by the way

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-08-02 13:51:47 -04:00
Jesper Juhl 8b6d5c09bc bnx2x: fix mem leak when command is unknown
In bnx2x_mcast_enqueue_cmd() we'll leak the memory allocated to
'new_cmd' if we hit the deafault case of the 'switch (cmd)'.
Add a 'kfree(new_cmd)' to that case to avoid the leak.

Signed-off-by: Jesper Juhl <jj@chaosbits.net>
Acked-by: Dmitry Kravkov <dmitry@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-02 00:19:17 -07:00
Ben Hutchings 7e6d06f0de sfc: Fix maximum number of TSO segments and minimum TX queue size
Currently an skb requiring TSO may not fit within a minimum-size TX
queue.  The TX queue selected for the skb may stall and trigger the TX
watchdog repeatedly (since the problem skb will be retried after the
TX reset).  This issue is designated as CVE-2012-3412.

Set the maximum number of TSO segments for our devices to 100.  This
should make no difference to behaviour unless the actual MSS is less
than about 700.  Increase the minimum TX queue size accordingly to
allow for 2 worst-case skbs, so that there will definitely be space
to add an skb after we wake a queue.

To avoid invalidating existing configurations, change
efx_ethtool_set_ringparam() to fix up values that are too small rather
than returning -EINVAL.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-08-02 00:19:17 -07:00
Linus Torvalds a0e881b7c1 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull second vfs pile from Al Viro:
 "The stuff in there: fsfreeze deadlock fixes by Jan (essentially, the
  deadlock reproduced by xfstests 068), symlink and hardlink restriction
  patches, plus assorted cleanups and fixes.

  Note that another fsfreeze deadlock (emergency thaw one) is *not*
  dealt with - the series by Fernando conflicts a lot with Jan's, breaks
  userland ABI (FIFREEZE semantics gets changed) and trades the deadlock
  for massive vfsmount leak; this is going to be handled next cycle.
  There probably will be another pull request, but that stuff won't be
  in it."

Fix up trivial conflicts due to unrelated changes next to each other in
drivers/{staging/gdm72xx/usb_boot.c, usb/gadget/storage_common.c}

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: (54 commits)
  delousing target_core_file a bit
  Documentation: Correct s_umount state for freeze_fs/unfreeze_fs
  fs: Remove old freezing mechanism
  ext2: Implement freezing
  btrfs: Convert to new freezing mechanism
  nilfs2: Convert to new freezing mechanism
  ntfs: Convert to new freezing mechanism
  fuse: Convert to new freezing mechanism
  gfs2: Convert to new freezing mechanism
  ocfs2: Convert to new freezing mechanism
  xfs: Convert to new freezing code
  ext4: Convert to new freezing mechanism
  fs: Protect write paths by sb_start_write - sb_end_write
  fs: Skip atime update on frozen filesystem
  fs: Add freezing handling to mnt_want_write() / mnt_drop_write()
  fs: Improve filesystem freezing handling
  switch the protection of percpu_counter list to spinlock
  nfsd: Push mnt_want_write() outside of i_mutex
  btrfs: Push mnt_want_write() outside of i_mutex
  fat: Push mnt_want_write() outside of i_mutex
  ...
2012-08-01 10:26:23 -07:00
Linus Torvalds ac694dbdbc Merge branch 'akpm' (Andrew's patch-bomb)
Merge Andrew's second set of patches:
 - MM
 - a few random fixes
 - a couple of RTC leftovers

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (120 commits)
  rtc/rtc-88pm80x: remove unneed devm_kfree
  rtc/rtc-88pm80x: assign ret only when rtc_register_driver fails
  mm: hugetlbfs: close race during teardown of hugetlbfs shared page tables
  tmpfs: distribute interleave better across nodes
  mm: remove redundant initialization
  mm: warn if pg_data_t isn't initialized with zero
  mips: zero out pg_data_t when it's allocated
  memcg: gix memory accounting scalability in shrink_page_list
  mm/sparse: remove index_init_lock
  mm/sparse: more checks on mem_section number
  mm/sparse: optimize sparse_index_alloc
  memcg: add mem_cgroup_from_css() helper
  memcg: further prevent OOM with too many dirty pages
  memcg: prevent OOM with too many dirty pages
  mm: mmu_notifier: fix freed page still mapped in secondary MMU
  mm: memcg: only check anon swapin page charges for swap cache
  mm: memcg: only check swap cache pages for repeated charging
  mm: memcg: split swapin charge function into private and public part
  mm: memcg: remove needless !mm fixup to init_mm when charging
  mm: memcg: remove unneeded shmem charge type
  ...
2012-07-31 19:25:39 -07:00
Linus Torvalds fd37ce34bd Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking update from David S. Miller:
 "I think Eric Dumazet and I have dealt with all of the known routing
  cache removal fallout.  Some other minor fixes all around.

  1) Fix RCU of cached routes, particular of output routes which require
     liberation via call_rcu() instead of call_rcu_bh().  From Eric
     Dumazet.

  2) Make sure we purge net device references in cached routes properly.

  3) TG3 driver bug fixes from Michael Chan.

  4) Fix reported 'expires' value in ipv6 routes, from Li Wei.

  5) TUN driver ioctl leaks kernel bytes to userspace, from Mathias
     Krause."

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net: (22 commits)
  ipv4: Properly purge netdev references on uncached routes.
  ipv4: Cache routes in nexthop exception entries.
  ipv4: percpu nh_rth_output cache
  ipv4: Restore old dst_free() behavior.
  bridge: make port attributes const
  ipv4: remove rt_cache_rebuild_count
  net: ipv4: fix RCU races on dst refcounts
  net: TCP early demux cleanup
  tun: Fix formatting.
  net/tun: fix ioctl() based info leaks
  tg3: Update version to 3.124
  tg3: Fix race condition in tg3_get_stats64()
  tg3: Add New 5719 Read DMA workaround
  tg3: Fix Read DMA workaround for 5719 A0.
  tg3: Request APE_LOCK_PHY before PHY access
  ipv6: fix incorrect route 'expires' value passed to userspace
  mISDN: Bugfix only few bytes are transfered on a connection
  seeq: use PTR_RET at init_module of driver
  bnx2x: remove cast around the kmalloc in bnx2x_prev_mark_path
  ipv4: clean up put_child
  ...
2012-07-31 18:43:13 -07:00
Mel Gorman 0614002bb5 netvm: propagate page->pfmemalloc from skb_alloc_page to skb
The skb->pfmemalloc flag gets set to true iff during the slab allocation
of data in __alloc_skb that the the PFMEMALLOC reserves were used.  If
page splitting is used, it is possible that pages will be allocated from
the PFMEMALLOC reserve without propagating this information to the skb.
This patch propagates page->pfmemalloc from pages allocated for fragments
to the skb.

It works by reintroducing and expanding the skb_alloc_page() API to take
an skb.  If the page was allocated from pfmemalloc reserves, it is
automatically copied.  If the driver allocates the page before the skb, it
should call skb_propagate_pfmemalloc() after the skb is allocated to
ensure the flag is copied properly.

Failure to do so is not critical.  The resulting driver may perform slower
if it is used for swap-over-NBD or swap-over-NFS but it should not result
in failure.

[davem@davemloft.net: API rename and consistency]
Signed-off-by: Mel Gorman <mgorman@suse.de>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Neil Brown <neilb@suse.de>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Mike Christie <michaelc@cs.wisc.edu>
Cc: Eric B Munson <emunson@mgebm.net>
Cc: Eric Dumazet <eric.dumazet@gmail.com>
Cc: Sebastian Andrzej Siewior <sebastian@breakpoint.cc>
Cc: Mel Gorman <mgorman@suse.de>
Cc: Christoph Lameter <cl@linux.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-31 18:42:46 -07:00
Linus Torvalds 27c1ee3f92 Merge branch 'akpm' (Andrew's patch-bomb)
Merge Andrew's first set of patches:
 "Non-MM patches:

   - lots of misc bits

   - tree-wide have_clk() cleanups

   - quite a lot of printk tweaks.  I draw your attention to "printk:
     convert the format for KERN_<LEVEL> to a 2 byte pattern" which
     looks a bit scary.  But afaict it's solid.

   - backlight updates

   - lib/ feature work (notably the addition and use of memweight())

   - checkpatch updates

   - rtc updates

   - nilfs updates

   - fatfs updates (partial, still waiting for acks)

   - kdump, proc, fork, IPC, sysctl, taskstats, pps, etc

   - new fault-injection feature work"

* Merge emailed patches from Andrew Morton <akpm@linux-foundation.org>: (128 commits)
  drivers/misc/lkdtm.c: fix missing allocation failure check
  lib/scatterlist: do not re-write gfp_flags in __sg_alloc_table()
  fault-injection: add tool to run command with failslab or fail_page_alloc
  fault-injection: add selftests for cpu and memory hotplug
  powerpc: pSeries reconfig notifier error injection module
  memory: memory notifier error injection module
  PM: PM notifier error injection module
  cpu: rewrite cpu-notifier-error-inject module
  fault-injection: notifier error injection
  c/r: fcntl: add F_GETOWNER_UIDS option
  resource: make sure requested range is included in the root range
  include/linux/aio.h: cpp->C conversions
  fs: cachefiles: add support for large files in filesystem caching
  pps: return PTR_ERR on error in device_create
  taskstats: check nla_reserve() return
  sysctl: suppress kmemleak messages
  ipc: use Kconfig options for __ARCH_WANT_[COMPAT_]IPC_PARSE_VERSION
  ipc: compat: use signed size_t types for msgsnd and msgrcv
  ipc: allow compat IPC version field parsing if !ARCH_WANT_OLD_COMPAT_IPC
  ipc: add COMPAT_SHMLBA support
  ...
2012-07-30 17:25:34 -07:00
Viresh Kumar 6a81c26f86 net/stmmac: remove conditional compilation of clk code
With addition of dummy clk_*() calls for non CONFIG_HAVE_CLK cases in
clk.h, there is no need to have clk code enclosed in #ifdef
CONFIG_HAVE_CLK, #endif macros.

This also fixes error paths of probe(), as a goto is required in this
patch.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: viresh kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30 17:25:12 -07:00
Viresh Kumar 2b1463ddde net/c_can: remove conditional compilation of clk code
With addition of dummy clk_*() calls for non CONFIG_HAVE_CLK cases in clk.h,
there is no need to have clk code enclosed in #ifdef CONFIG_HAVE_CLK, #endif
macros.

Signed-off-by: Viresh Kumar <viresh.kumar@st.com>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: Bhupesh Sharma <bhupesh.sharma@st.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Cc: Mike Turquette <mturquette@linaro.org>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: viresh kumar <viresh.linux@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-07-30 17:25:12 -07:00
David S. Miller 8bbb181308 tun: Fix formatting.
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-30 14:52:48 -07:00
Linus Torvalds 287dc4b764 Merge branch 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus
Pull MIPS updates from Ralf Baechle:
 "More hardware support across the field including a bunch of device
  drivers.  The highlight however really are further steps towards
  device tree.

  This has been sitting in -next for ages.  All MIPS _defconfigs have
  been tested to boot or where I don't have hardware available, to at
  least build fine."

* 'upstream' of git://git.linux-mips.org/pub/scm/ralf/upstream-linus: (77 commits)
  MIPS: Loongson 1B: Add defconfig
  MIPS: Loongson 1B: Add board support
  MIPS: Netlogic: early console fix
  MIPS: Netlogic: Fix indentation of smpboot.S
  MIPS: Netlogic: remove cpu_has_dc_aliases define for XLP
  MIPS: Netlogic: Remove unused pcibios_fixups
  MIPS: Netlogic: Add XLP SoC devices in FDT
  MIPS: Netlogic: Add IRQ mappings for more devices
  MIPS: Netlogic: USB support for XLP
  MIPS: Netlogic: XLP PCIe controller support.
  MIPS: Netlogic: Platform changes for XLR/XLS I2C
  MIPS: Netlogic: Platform NAND/NOR flash support
  MIPS: Netlogic: Platform changes for XLS USB
  MIPS: Netlogic: Remove NETLOGIC_ prefix
  MIPS: Netlogic: SMP wakeup code update
  MIPS: Netlogic: Update comments in smpboot.S
  MIPS: BCM63XX: Add 96328avng reference board
  MIPS: Expose PCIe drivers for MIPS
  MIPS: BCM63XX: Add PCIe Support for BCM6328
  MIPS: BCM63XX: Move the PCI initialization into its own function
  ...
2012-07-30 11:45:52 -07:00
Mathias Krause a117dacde0 net/tun: fix ioctl() based info leaks
The tun module leaks up to 36 bytes of memory by not fully initializing
a structure located on the stack that gets copied to user memory by the
TUNGETIFF and SIOCGIFHWADDR ioctl()s.

Signed-off-by: Mathias Krause <minipli@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:31 -07:00
Michael Chan cac83e5391 tg3: Update version to 3.124
Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:31 -07:00
Michael Chan 0f566b208b tg3: Fix race condition in tg3_get_stats64()
Spinlock should be taken before checking for tp->hw_stats.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:31 -07:00
Michael Chan 091f0ea300 tg3: Add New 5719 Read DMA workaround
After Power-on-reset, the 5719's TX DMA length registers may contain
uninitialized values and cause TX DMA to stall.  Check for invalid
values and set a register bit to flush the TX channels.  The bit
needs to be turned off after the DMA channels have been flushed.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:31 -07:00
Michael Chan 10ce95d6ef tg3: Fix Read DMA workaround for 5719 A0.
The workaround was mis-applied to all 5719 and 5720 chips.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:31 -07:00
Michael Chan 8151ad576d tg3: Request APE_LOCK_PHY before PHY access
to prevent PHY access conflict with APE firmware.

Signed-off-by: Michael Chan <mchan@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:31 -07:00
Devendra Naga 17a2bf7986 seeq: use PTR_RET at init_module of driver
the driver sees wether the dev_seeq pointer is having a error that can be
read by using the PTR_ERR, and returns it at error case, other wise 0 at
success case.

the PTR_RET does the same thing, and use PTR_RET instead of redoing the
code of PTR_RET

Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Acked-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:30 -07:00
Devendra Naga ea4b385786 bnx2x: remove cast around the kmalloc in bnx2x_prev_mark_path
casting the void pointer is redundant (Documentation/CodingStyle)

Signed-off-by: Devendra Naga <develkernel412222@gmail.com>
Acked-by: Eilon Greenstein <eilong@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:30 -07:00
brenohl@br.ibm.com 1a0150a93c qlge: Add offload features to vlan interfaces
This patch fills the net_device vlan_features with the proper hardware features,
thus, improving the vlan interface performance.

With the patch applied, I can see around 148% improvement on a TCP_STREAM test,
from 3.5 Gb/s to 8.7 Gb/s. On TCP_RR, I see a 11% improvement, from 18k
to 20. The CPU utilization is almost the same on both cases, from the comparison
above.

Signed-off-by: Breno Leitao <brenohl@br.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-29 23:18:30 -07:00
Al Viro 0b5306b329 brcm80211: pointless current->files passed to filp_close()
... only needed if it's been in descriptor table

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
2012-07-29 21:24:22 +04:00
Linus Torvalds f7da9cdf45 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking fixes from David Miller:
 "Several bug fixes, some to new features appearing in this merge
  window, some that have been around for a while.

  I have a short list of known problems that need to be sorted out, but
  all of them can be solved easily during the run up to 3.6-final.

  I'll be offline until Sunday afternoon, but nothing need hold up
  3.6-rc1 and the close of the merge window, networking wise, at this
  point.

  1) Fix interface check in ipv4 TCP early demux, from Eric Dumazet.

  2) Fix a long standing bug in TCP DMA to userspace offload that can
     hang applications using MSG_TRUNC, from Jiri Kosina.

  3) Don't allow TCP_USER_TIMEOUT to be negative, from Hangbin Liu.

  4) Don't use GFP_KERNEL under spinlock in kaweth driver, from Dan
     Carpenter"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  tcp: perform DMA to userspace only if there is a task waiting for it
  Revert "openvswitch: potential NULL deref in sample()"
  ipv4: fix TCP early demux
  net: fix rtnetlink IFF_PROMISC and IFF_ALLMULTI handling
  USB: kaweth.c: use GFP_ATOMIC under spin_lock
  tcp: Add TCP_USER_TIMEOUT negative value check
  bcma: add missing iounmap on error path
  bcma: fix regression in interrupt assignment on mips
  mac80211_hwsim: fix possible race condition in usage of info->control.sta & control.vif
2012-07-28 06:00:39 -07:00
Linus Torvalds cea8f46c36 Merge branch 'for-linus' of git://git.linaro.org/people/rmk/linux-arm
Pull ARM updates from Russell King:
 "First ARM push of this merge window, post me coming back from holiday.
  This is what has been in linux-next for the last few weeks.  Not much
  to say which isn't described by the commit summaries."

* 'for-linus' of git://git.linaro.org/people/rmk/linux-arm: (32 commits)
  ARM: 7463/1: topology: Update cpu_power according to DT information
  ARM: 7462/1: topology: factorize the update of sibling masks
  ARM: 7461/1: topology: Add arch_scale_freq_power function
  ARM: 7456/1: ptrace: provide separate functions for tracing syscall {entry,exit}
  ARM: 7455/1: audit: move syscall auditing until after ptrace SIGTRAP handling
  ARM: 7454/1: entry: don't bother with syscall tracing on ret_from_fork path
  ARM: 7453/1: audit: only allow syscall auditing for pure EABI userspace
  ARM: 7452/1: delay: allow timer-based delay implementation to be selected
  ARM: 7451/1: arch timer: implement read_current_timer and get_cycles
  ARM: 7450/1: dcache: select DCACHE_WORD_ACCESS for little-endian ARMv6+ CPUs
  ARM: 7449/1: use generic strnlen_user and strncpy_from_user functions
  ARM: 7448/1: perf: remove arm_perf_pmu_ids global enumeration
  ARM: 7447/1: rwlocks: remove unused branch labels from trylock routines
  ARM: 7446/1: spinlock: use ticket algorithm for ARMv6+ locking implementation
  ARM: 7445/1: mm: update CONTEXTIDR register to contain PID of current process
  ARM: 7444/1: kernel: add arch-timer C3STOP feature
  ARM: 7460/1: remove asm/locks.h
  ARM: 7439/1: head.S: simplify initial page table mapping
  ARM: 7437/1: zImage: Allow DTB command line concatenation with ATAG_CMDLINE
  ARM: 7436/1: Do not map the vectors page as write-through on UP systems
  ...
2012-07-27 15:14:26 -07:00
Russell King 91b006def3 Merge branches 'audit', 'delay', 'fixes', 'misc' and 'sta2x11' into for-linus 2012-07-27 23:06:32 +01:00
David S. Miller 7b9b04fb72 Merge branch 'for-davem' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
John W. Linville says:

====================
These fixes are intended for the 3.6 stream.

Hauke Mehrtens provides a pair of bcma fixes, one to fix a build
regression on mips and another to correct a pair of missing iounmap
calls.

Thomas Huehn offers a mac80211_hwsim fix to avoid a possible
use-after-free bug.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2012-07-27 14:25:40 -07:00