Commit Graph

147034 Commits

Author SHA1 Message Date
Johan Hedberg 9f2aee848f Bluetooth: Add delayed init sequence support for UART controllers
This patch makes it possible to have UART drivers perform an internal
initialization before calling hci_register_dev. This allows moving a lot
of init code from user space (hciattach) to the kernel side, thereby
creating a more controlled/robust initialization process.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:48:29 -03:00
Johan Hedberg dac670b976 Bluetooth: Simplify hci_uart_tty_close logic
This patch cleans up and reduces indentation in the hci_uart_tty_close
function.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:48:27 -03:00
Johan Hedberg 40f10224df Bluetooth: Add support for Three-wire Link Control packets
This patch adds basic support for parsing and sending Three-wire UART
Link Control packets.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:48:26 -03:00
Johan Hedberg 43eb12d789 Bluetooth: Fix/implement Three-wire reliable packet sending
This patch should complete the necessary code for sending reliable
Three-wire packets.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:48:24 -03:00
Johan Hedberg 01977c0bbb Bluetooth: Add Three-wire header value convenience macros
This patch adds convenience macros for reading Three-wire header values.
This will help make the code more readable.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:48:22 -03:00
Johan Hedberg c0a1b73c3f Bluetooth: Add initial packet sending support to Three-wire UART
This patch adds initial packed encoding and sending support to the
Three-wire UART HCI transport driver.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:48:21 -03:00
Johan Hedberg bc1f35b911 Bluetooth: Add basic packet parsing to Three-wire UART driver
This patch adds basic packet parsing to the Three-wire UART HCI driver
for packets received from the controller.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:48:19 -03:00
Johan Hedberg 3f27e95b83 Bluetooth: Add initial reliable packet support for Three-wire UART
This patch adds initial support for reliable packets along with the
necessary retransmission timer for the Three-wire UART HCI driver.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:48:13 -03:00
Johan Hedberg 7d664fbafa Bluetooth: Add basic state tracking to Three-wire UART driver
This patch adds basic state tracking and socket buffer handling to the
Three-wire UART (H5) HCI driver.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:34:40 -03:00
Johan Hedberg 7dec65c8a7 Bluetooth: Initial skeleton for Three-wire UART (H5) support
This patch adds the initial skeleton for Three-wire UART (H5) support
and hooks it up to the HCI UART framework.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-17 14:33:20 -03:00
Andrei Emeltchenko 2c2453f3e4 Bluetooth: btmrvl: trivial style fixes
Patch shortens locals scope and adds missing braces. This is a diff
between v1 which was applied and v2 of patch "Bluetooth: btmrvl: Do
not send vendor events to bluetooth stack".

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-07-09 09:45:10 -03:00
Andrei Emeltchenko 74ad8fdaef Bluetooth: bluecard_cs: Shorten scope for iobase
Shortening scope shall silence some warnings reported by Geert
Uytterhoeven:

...
drivers/bluetooth/bluecard_cs.c: warning: unused variable 'iobase'
	[-Wunused-variable]
...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-30 12:33:06 -03:00
Andrei Emeltchenko 510df2515f Bluetooth: Fix warning: using int as NULL pointer
Fix for warnings below:

...
drivers/bluetooth/bt3c_cs.c:667:20: warning: Using plain integer
	as NULL pointer
drivers/bluetooth/btuart_cs.c:596:20: warning: Using plain integer
	as NULL pointer
...

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-30 12:07:14 -03:00
Devendra Naga 46afededca Bluetooth: cleanup dtl1_config
Improve the error handling of dtl1_config()

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-30 11:44:36 -03:00
Gustavo Padovan b82c29d81d Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth 2012-06-26 08:36:30 -07:00
Andrei Emeltchenko ea1e76a3f9 Bluetooth: btmrvl: Do not send vendor events to bluetooth stack
Vendor-specific events shall be processed in driver and not sent
to bluetooth stack where they screw up HCI command countings.

Signed-off-by: Andrei Emeltchenko <andrei.emeltchenko@intel.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-19 00:19:11 -03:00
Giancarlo Formicuccia 6c4ae5c2e7 Bluetooth: add support for atheros 0930:0219
Add support for the AR3012 chip found on the Toshiba Sallite M840-1000-XQ.

usb-devices shows:

T:  Bus=01 Lev=02 Prnt=02 Port=02 Cnt=01 Dev#=  5 Spd=12  MxCh= 0
D:  Ver= 1.10 Cls=e0(wlcon) Sub=01 Prot=01 MxPS=64 #Cfgs=  1
P:  Vendor=0930 ProdID=0219 Rev=00.02
S:  Manufacturer=Atheros Communications
S:  Product=Bluetooth USB Host Controller
S:  SerialNumber=Alaska Day 2006
C:  #Ifs= 2 Cfg#= 1 Atr=e0 MxPwr=100mA
I:  If#= 0 Alt= 0 #EPs= 3 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb
I:  If#= 1 Alt= 0 #EPs= 2 Cls=e0(wlcon) Sub=01 Prot=01 Driver=btusb

Signed-off-by: Giancarlo Formicuccia <giancarlo.formicuccia@gmail.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-11 23:54:33 -03:00
Gustavo Padovan cbe461c526 Merge branch 'for-upstream' of git://git.kernel.org/pub/scm/linux/kernel/git/bluetooth/bluetooth
Conflicts:
	net/bluetooth/hci_event.c
2012-06-11 22:36:42 -03:00
Marek Vasut 6eda541d12 Bluetooth: Support AR3011 in Acer Iconia Tab W500
Acer used this chip connected via USB:

Bus 005 Device 005: ID 0cf3:3005 Atheros Communications, Inc. AR3011 Bluetooth
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               1.10
  bDeviceClass          224 Wireless
  bDeviceSubClass         1 Radio Frequency
  bDeviceProtocol         1 Bluetooth
  bMaxPacketSize0        64
  idVendor           0x0cf3 Atheros Communications, Inc.
  idProduct          0x3005 AR3011 Bluetooth
  bcdDevice            0.01
  iManufacturer           0
  iProduct                0
  iSerial                 0
  bNumConfigurations      1

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Gustavo Padovan <gustavo@padovan.org>
Cc: Johan Hedberg <johan.hedberg@gmail.com>
Cc: Marcel Holtmann <marcel@holtmann.org>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-09 19:29:02 -03:00
Bing Zhao 37ed561e82 Bluetooth: btmrvl: add SD8787 Bluetooth AMP device ID
SD8787 SDIO function 3 (device ID 0x911B) is for Bluetooth AMP.

Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
2012-06-05 06:34:09 +03:00
Gustavo Padovan 8c520a5992 Bluetooth: Remove unnecessary headers include
Most of the include were unnecessary or already included by some other
header.
Replace module.h by export.h where possible.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:08 +03:00
Gustavo Padovan fc5fef615a Bluetooth: Remove 'register' usage from the subsystem
Let the compiler chooses what is best.

Signed-off-by: Gustavo Padovan <gustavo.padovan@collabora.co.uk>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:07 +03:00
Szymon Janc a6c511c636 Bluetooth: Rename HCI_QUIRK_NO_RESET to HCI_QUIRK_RESET_ON_CLOSE
HCI_QUIRK_NO_RESET name is misleading - purpose of this quirk is to
reset device on close instead of init, not to not reset at all.
Rename it to HCI_QUIRK_RESET_ON_CLOSE to avoid confusion.

Signed-off-by: Szymon Janc <szymon.janc@tieto.com>
Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
2012-06-05 06:34:06 +03:00
Johannes Berg fcb6ff5e2c iwlwifi: disable WoWLAN if !CONFIG_PM_SLEEP
If CONFIG_PM_SLEEP is disabled, then iwlwifi doesn't
support suspend/resume handlers and thus mac80211
(correctly) refuses advertising WoWLAN. Disable
WoWLAN in the driver in this case.

Cc: stable@kernel.org
Reported-by: Sebastian Kemper <sebastian_ml@gmx.net>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-04 15:27:07 -04:00
Seth Forshee 69aaedd3cf bcma: add ext PA workaround for BCM4331 and BCM43431
MacBook Pro models with BCM4331 wireless have been found to have the ext
PA lines disabled after resuming from S3 without external power attach.
This causes them to be unable to transmit. Add a workaround to ensure
that the ext PA lines are enabled on BCM4331. Also extend all handling
of ext PA line muxing to BCM43431 as is done in the Broadcom SDK.

BugLink: http://bugs.launchpad.net/bugs/925577
Cc: Arend van Spriel <arend@broadcom.com>
Cc: Hauke Mehrtens <hauke@hauke-m.de>
Cc: stable@vger.kernel.org
Signed-off-by: Seth Forshee <seth.forshee@canonical.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-04 15:26:40 -04:00
Stanislaw Gruszka e5851dac2c rt2x00: use atomic variable for seqno
Remove spinlock as atomic_t can be used instead. Note we use only 16
lower bits, upper bits are changed but we impilcilty cast to u16.

This fix possible deadlock on IBSS mode reproted by lockdep:

=================================
[ INFO: inconsistent lock state ]
3.4.0-wl+ #4 Not tainted
---------------------------------
inconsistent {IN-SOFTIRQ-W} -> {SOFTIRQ-ON-W} usage.
kworker/u:2/30374 [HC0[0]:SC0[0]:HE1:SE1] takes:
 (&(&intf->seqlock)->rlock){+.?...}, at: [<f9979a20>] rt2x00queue_create_tx_descriptor+0x380/0x490 [rt2x00lib]
{IN-SOFTIRQ-W} state was registered at:
  [<c04978ab>] __lock_acquire+0x47b/0x1050
  [<c0498504>] lock_acquire+0x84/0xf0
  [<c0835733>] _raw_spin_lock+0x33/0x40
  [<f9979a20>] rt2x00queue_create_tx_descriptor+0x380/0x490 [rt2x00lib]
  [<f9979f2a>] rt2x00queue_write_tx_frame+0x1a/0x300 [rt2x00lib]
  [<f997834f>] rt2x00mac_tx+0x7f/0x380 [rt2x00lib]
  [<f98fe363>] __ieee80211_tx+0x1b3/0x300 [mac80211]
  [<f98ffdf5>] ieee80211_tx+0x105/0x130 [mac80211]
  [<f99000dd>] ieee80211_xmit+0xad/0x100 [mac80211]
  [<f9900519>] ieee80211_subif_start_xmit+0x2d9/0x930 [mac80211]
  [<c0782e87>] dev_hard_start_xmit+0x307/0x660
  [<c079bb71>] sch_direct_xmit+0xa1/0x1e0
  [<c0784bb3>] dev_queue_xmit+0x183/0x730
  [<c078c27a>] neigh_resolve_output+0xfa/0x1e0
  [<c07b436a>] ip_finish_output+0x24a/0x460
  [<c07b4897>] ip_output+0xb7/0x100
  [<c07b2d60>] ip_local_out+0x20/0x60
  [<c07e01ff>] igmpv3_sendpack+0x4f/0x60
  [<c07e108f>] igmp_ifc_timer_expire+0x29f/0x330
  [<c04520fc>] run_timer_softirq+0x15c/0x2f0
  [<c0449e3e>] __do_softirq+0xae/0x1e0
irq event stamp: 18380437
hardirqs last  enabled at (18380437): [<c0526027>] __slab_alloc.clone.3+0x67/0x5f0
hardirqs last disabled at (18380436): [<c0525ff3>] __slab_alloc.clone.3+0x33/0x5f0
softirqs last  enabled at (18377616): [<c0449eb3>] __do_softirq+0x123/0x1e0
softirqs last disabled at (18377611): [<c041278d>] do_softirq+0x9d/0xe0

other info that might help us debug this:
 Possible unsafe locking scenario:

       CPU0
       ----
  lock(&(&intf->seqlock)->rlock);
  <Interrupt>
    lock(&(&intf->seqlock)->rlock);

 *** DEADLOCK ***

4 locks held by kworker/u:2/30374:
 #0:  (wiphy_name(local->hw.wiphy)){++++.+}, at: [<c045cf99>] process_one_work+0x109/0x3f0
 #1:  ((&sdata->work)){+.+.+.}, at: [<c045cf99>] process_one_work+0x109/0x3f0
 #2:  (&ifibss->mtx){+.+.+.}, at: [<f98f005b>] ieee80211_ibss_work+0x1b/0x470 [mac80211]
 #3:  (&intf->beacon_skb_mutex){+.+...}, at: [<f997a644>] rt2x00queue_update_beacon+0x24/0x50 [rt2x00lib]

stack backtrace:
Pid: 30374, comm: kworker/u:2 Not tainted 3.4.0-wl+ #4
Call Trace:
 [<c04962a6>] print_usage_bug+0x1f6/0x220
 [<c0496a12>] mark_lock+0x2c2/0x300
 [<c0495ff0>] ? check_usage_forwards+0xc0/0xc0
 [<c04978ec>] __lock_acquire+0x4bc/0x1050
 [<c0527890>] ? __kmalloc_track_caller+0x1c0/0x1d0
 [<c0777fb6>] ? copy_skb_header+0x26/0x90
 [<c0498504>] lock_acquire+0x84/0xf0
 [<f9979a20>] ? rt2x00queue_create_tx_descriptor+0x380/0x490 [rt2x00lib]
 [<c0835733>] _raw_spin_lock+0x33/0x40
 [<f9979a20>] ? rt2x00queue_create_tx_descriptor+0x380/0x490 [rt2x00lib]
 [<f9979a20>] rt2x00queue_create_tx_descriptor+0x380/0x490 [rt2x00lib]
 [<f997a5cf>] rt2x00queue_update_beacon_locked+0x5f/0xb0 [rt2x00lib]
 [<f997a64d>] rt2x00queue_update_beacon+0x2d/0x50 [rt2x00lib]
 [<f9977e3a>] rt2x00mac_bss_info_changed+0x1ca/0x200 [rt2x00lib]
 [<f9977c70>] ? rt2x00mac_remove_interface+0x70/0x70 [rt2x00lib]
 [<f98e4dd0>] ieee80211_bss_info_change_notify+0xe0/0x1d0 [mac80211]
 [<f98ef7b8>] __ieee80211_sta_join_ibss+0x3b8/0x610 [mac80211]
 [<c0496ab4>] ? mark_held_locks+0x64/0xc0
 [<c0440012>] ? virt_efi_query_capsule_caps+0x12/0x50
 [<f98efb09>] ieee80211_sta_join_ibss+0xf9/0x140 [mac80211]
 [<f98f0456>] ieee80211_ibss_work+0x416/0x470 [mac80211]
 [<c0496d8b>] ? trace_hardirqs_on+0xb/0x10
 [<c077683b>] ? skb_dequeue+0x4b/0x70
 [<f98f207f>] ieee80211_iface_work+0x13f/0x230 [mac80211]
 [<c045cf99>] ? process_one_work+0x109/0x3f0
 [<c045d015>] process_one_work+0x185/0x3f0
 [<c045cf99>] ? process_one_work+0x109/0x3f0
 [<f98f1f40>] ? ieee80211_teardown_sdata+0xa0/0xa0 [mac80211]
 [<c045ed86>] worker_thread+0x116/0x270
 [<c045ec70>] ? manage_workers+0x1e0/0x1e0
 [<c0462f64>] kthread+0x84/0x90
 [<c0462ee0>] ? __init_kthread_worker+0x60/0x60
 [<c083d382>] kernel_thread_helper+0x6/0x10

Cc: stable@vger.kernel.org
Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com>
Acked-by: Helmut Schaa <helmut.schaa@googlemail.com>
Acked-by: Gertjan van Wingerde <gwingerde@gmail.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-04 15:26:26 -04:00
Joe Perches f304a99319 brcmfmac: Fix likely misuse of | for &
Using | with a constant is always true.
Likely this should have be &.

Signed-off-by: Joe Perches <joe@perches.com>
Acked-by: Arend van Spriel <arend@broadcom.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-04 15:26:11 -04:00
Johannes Berg 1ae2fc25a1 mac80211_hwsim: advertise interface combinations
Enforcing interface combinations broke uses of hwsim
with multiple virtual interfaces. Advertise that all
combinations are possible to fix this.

Reported-by: Nirav Shah <nirav.j2.shah@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-04 15:25:10 -04:00
Johannes Berg a5fdde28b4 iwlwifi: fix TX power antenna access
Since my commit
  iwlwifi: use valid TX/RX antenna from hw_params
the config values are pure overrides, not the
real values for all hardware. Therefore, the
EEPROM TX power reading code checks the wrong
values, it should check the hw_params values.

Cc: stable@kernel.org [3.4]
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-04 15:24:42 -04:00
Avinash Patil 7a1c99343c mwifiex: support NL80211_HIDDEN_SSID_ZERO_LEN for uAP
mwifiex uAP supports NL80211_HIDDEN_SSID_ZERO_LEN type of hidden
SSID only. NL80211_HIDDEN_SSID_ZERO_CONTENTS is not supported.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-04 15:21:25 -04:00
Avinash Patil f0e3bd2341 mwifiex: invalidate bss config before setting channel for uAP
Mark bss_config parameters as invalid before setting AP channel.
This prevents from setting invalid parameters while setting AP
channel to FW.

Signed-off-by: Avinash Patil <patila@marvell.com>
Signed-off-by: Kiran Divekar <dkiran@marvell.com>
Signed-off-by: Bing Zhao <bzhao@marvell.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-06-04 15:21:21 -04:00
Linus Torvalds 912afc3616 Improve multipath's retrying mechanism in some defined circumstances
and provide a simple reserve/release mechanism for userspace tools to
 access thin provisioning metadata while the pool is in use.
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Merge tag 'dm-3.5-changes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm

Pull device-mapper updates from Alasdair G Kergon:
 "Improve multipath's retrying mechanism in some defined circumstances
  and provide a simple reserve/release mechanism for userspace tools to
  access thin provisioning metadata while the pool is in use."

* tag 'dm-3.5-changes-1' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm:
  dm thin: provide userspace access to pool metadata
  dm thin: use slab mempools
  dm mpath: allow ioctls to trigger pg init
  dm mpath: delay retry of bypassed pg
  dm mpath: reduce size of struct multipath
2012-06-02 17:39:40 -07:00
Joe Thornber cc8394d86f dm thin: provide userspace access to pool metadata
This patch implements two new messages that can be sent to the thin
pool target allowing it to take a snapshot of the _metadata_.  This,
read-only snapshot can be accessed by userland, concurrently with the
live target.

Only one metadata snapshot can be held at a time.  The pool's status
line will give the block location for the current msnap.

Since version 0.1.5 of the userland thin provisioning tools, the
thin_dump program displays the msnap as follows:

    thin_dump -m <msnap root> <metadata dev>

Available here: https://github.com/jthornber/thin-provisioning-tools

Now that userland can access the metadata we can do various things
that have traditionally been kernel side tasks:

     i) Incremental backups.

     By using metadata snapshots we can work out what blocks have
     changed over time.  Combined with data snapshots we can ensure
     the data doesn't change while we back it up.

     A short proof of concept script can be found here:

     https://github.com/jthornber/thinp-test-suite/blob/master/incremental_backup_example.rb

     ii) Migration of thin devices from one pool to another.

     iii) Merging snapshots back into an external origin.

     iv) Asyncronous replication.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-06-03 00:30:01 +01:00
Mike Snitzer a24c25696b dm thin: use slab mempools
Use dedicated caches prefixed with a "dm_" name rather than relying on
kmalloc mempools backed by generic slab caches so the memory usage of
thin provisioning (and any leaks) can be accounted for independently.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-06-03 00:30:00 +01:00
Mikulas Patocka 35991652ba dm mpath: allow ioctls to trigger pg init
After the failure of a group of paths, any alternative paths that
need initialising do not become available until further I/O is sent to
the device.  Until this has happened, ioctls return -EAGAIN.

With this patch, new paths are made available in response to an ioctl
too.  The processing of the ioctl gets delayed until this has happened.

Instead of returning an error, we submit a work item to kmultipathd
(that will potentially activate the new path) and retry in ten
milliseconds.

Note that the patch doesn't retry an ioctl if the ioctl itself fails due
to a path failure.  Such retries should be handled intelligently by the
code that generated the ioctl in the first place, noting that some SCSI
commands should not be retried because they are not idempotent (XOR write
commands).  For commands that could be retried, there is a danger that
if the device rejected the SCSI command, the path could be errorneously
marked as failed, and the request would be retried on another path which
might fail too.  It can be determined if the failure happens on the
device or on the SCSI controller, but there is no guarantee that all
SCSI drivers set these flags correctly.

Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-06-03 00:29:58 +01:00
Mike Christie f220fd4efb dm mpath: delay retry of bypassed pg
If I/O needs retrying and only bypassed priority groups are available,
set the pg_init_delay_retry flag to wait before retrying.

If, for example, the reason for the bypass is that the controller is
getting reset or there is a firmware upgrade happening, retrying right
away would cause a flood of log messages and retries for what could be a
few seconds or even several minutes.

Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-06-03 00:29:45 +01:00
Mike Snitzer 1fbdd2b3a3 dm mpath: reduce size of struct multipath
Move multipath structure's 'lock' and 'queue_size' members to eliminate
two 4-byte holes.  Also use a bit within a single unsigned int for each
existing flag (saves 8-bytes).  This allows future flags to be added
without each consuming an unsigned int.

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Acked-by: Hannes Reinecke <hare@suse.de>
Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-06-03 00:29:43 +01:00
Linus Torvalds 4fc3acf291 Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net
Pull networking updates from David Miller:

 1) Make syn floods consume significantly less resources by

    a) Not pre-COW'ing routing metrics for SYN/ACKs
    b) Mirroring the device queue mapping of the SYN for the SYN/ACK
       reply.

    Both from Eric Dumazet.

 2) Fix calculation errors in Byte Queue Limiting, from Hiroaki SHIMODA.

 3) Validate the length requested when building a paged SKB for a
    socket, so we don't overrun the page vector accidently.  From Jason
    Wang.

 4) When netlabel is disabled, we abort all IP option processing when we
    see a CIPSO option.  This isn't the right thing to do, we should
    simply skip over it and continue processing the remaining options
    (if any).  Fix from Paul Moore.

 5) SRIOV fixes for the mellanox driver from Jack orgenstein and Marcel
    Apfelbaum.

 6) 8139cp enables the receiver before the ring address is properly
    programmed, which potentially lets the device crap over random
    memory.  Fix from Jason Wang.

 7) e1000/e1000e fixes for i217 RST handling, and an improper buffer
    address reference in jumbo RX frame processing from Bruce Allan and
    Sebastian Andrzej Siewior, respectively.

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net:
  fec_mpc52xx: fix timestamp filtering
  mcs7830: Implement link state detection
  e1000e: fix Rapid Start Technology support for i217
  e1000: look into the page instead of skb->data for e1000_tbi_adjust_stats()
  r8169: call netif_napi_del at errpaths and at driver unload
  tcp: reflect SYN queue_mapping into SYNACK packets
  tcp: do not create inetpeer on SYNACK message
  8139cp/8139too: terminate the eeprom access with the right opmode
  8139cp: set ring address before enabling receiver
  cipso: handle CIPSO options correctly when NetLabel is disabled
  net: sock: validate data_len before allocating skb in sock_alloc_send_pskb()
  bql: Avoid possible inconsistent calculation.
  bql: Avoid unneeded limit decrement.
  bql: Fix POSDIFF() to integer overflow aware.
  net/mlx4_core: Fix obscure mlx4_cmd_box parameter in QUERY_DEV_CAP
  net/mlx4_core: Check port out-of-range before using in mlx4_slave_cap
  net/mlx4_core: Fixes for VF / Guest startup flow
  net/mlx4_en: Fix improper use of "port" parameter in mlx4_en_event
  net/mlx4_core: Fix number of EQs used in ICM initialisation
  net/mlx4_core: Fix the slave_id out-of-range test in mlx4_eq_int
2012-06-02 16:22:51 -07:00
Linus Torvalds f309532bf3 tty: Revert the tty locking series, it needs more work
This reverts the tty layer change to use per-tty locking, because it's
not correct yet, and fixing it will require some more deep surgery.

The main revert is d29f3ef39b ("tty_lock: Localise the lock"), but
there are several smaller commits that built upon it, they also get
reverted here. The list of reverted commits is:

  fde86d3108 - tty: add lockdep annotations
  8f6576ad47 - tty: fix ldisc lock inversion trace
  d3ca8b64b9 - pty: Fix lock inversion
  b1d679afd7 - tty: drop the pty lock during hangup
  abcefe5fc3 - tty/amiserial: Add missing argument for tty_unlock()
  fd11b42e35 - cris: fix missing tty arg in wait_event_interruptible_tty call
  d29f3ef39b - tty_lock: Localise the lock

The revert had a trivial conflict in the 68360serial.c staging driver
that got removed in the meantime.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2012-06-02 15:21:43 -07:00
Stephan Gatzka 9ca3cc6f30 fec_mpc52xx: fix timestamp filtering
skb_defer_rx_timestamp was called with a freshly allocated skb but must
be called with rskb instead.

Signed-off-by: Stephan Gatzka <stephan@gatzka.org>
Cc: stable <stable@vger.kernel.org>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-02 17:09:08 -04:00
Ondrej Zary b1ff4f96fd mcs7830: Implement link state detection
Add .status callback that detects link state changes.
Tested with MCS7832CV-AA chip (9710:7830, identified as rev.C by the driver).
Fixes https://bugzilla.kernel.org/show_bug.cgi?id=28532

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-02 17:09:08 -04:00
Bruce Allan 6d7407bfba e1000e: fix Rapid Start Technology support for i217
The definition of I217_PROXY_CTRL must use the BM_PHY_REG() macro instead
of the PHY_REG() macro for PHY page 800 register 70 since it is for a PHY
register greater than the maximum allowed by the latter macro, and fix a
typo setting the I217_MEMPWR register in e1000_suspend_workarounds_ich8lan.

Also for clarity, rename a few defines as bit definitions instead of masks.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-06-02 00:12:33 -07:00
Sebastian Andrzej Siewior 281a8f2462 e1000: look into the page instead of skb->data for e1000_tbi_adjust_stats()
This is another fixup where the data is not transfered into buffer
addressed by skb->data but into a page.

Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Tested-by: Aaron Brown <aaron.f.brown@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
2012-06-02 00:04:19 -07:00
Linus Torvalds 804ce9866d fbdev updates for 3.5
It includes:
 - driver for AUO-K1900 and AUO-K1901 epaper controller
 - large updates for OMAP (e.g. decouple HDMI audio and video)
 - some updates for Exynos and SH Mobile
 - various other small fixes and cleanups
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Merge tag 'fbdev-updates-for-3.5' of git://github.com/schandinat/linux-2.6

Pull fbdev updates from Florian Tobias Schandinat:
 - driver for AUO-K1900 and AUO-K1901 epaper controller
 - large updates for OMAP (e.g. decouple HDMI audio and video)
 - some updates for Exynos and SH Mobile
 - various other small fixes and cleanups

* tag 'fbdev-updates-for-3.5' of git://github.com/schandinat/linux-2.6: (130 commits)
  video: bfin_adv7393fb: Fix cleanup code
  video: exynos_dp: reduce delay time when configuring video setting
  video: exynos_dp: move sw reset prioir to enabling sw defined function
  video: exynos_dp: use devm_ functions
  fb: handle NULL pointers in framebuffer release
  OMAPDSS: HDMI: OMAP4: Update IRQ flags for the HPD IRQ request
  OMAPDSS: Apply VENC timings even if panel is disabled
  OMAPDSS: VENC/DISPC: Delay dividing Y resolution for managers connected to VENC
  OMAPDSS: DISPC: Support rotation through TILER
  OMAPDSS: VRFB: remove compiler warnings when CONFIG_BUG=n
  OMAPFB: remove compiler warnings when CONFIG_BUG=n
  OMAPDSS: remove compiler warnings when CONFIG_BUG=n
  OMAPDSS: DISPC: fix usage of dispc_ovl_set_accu_uv
  OMAPDSS: use DSI_FIFO_BUG workaround only for manual update displays
  OMAPDSS: DSI: Support command mode interleaving during video mode blanking periods
  OMAPDSS: DISPC: Update Accumulator configuration for chroma plane
  drivers/video: fsl-diu-fb: don't initialize the THRESHOLDS registers
  video: exynos mipi dsi: support reverse panel type
  video: exynos mipi dsi: Properly interpret the interrupt source flags
  video: exynos mipi dsi: Avoid races in probe()
  ...
2012-06-01 16:57:51 -07:00
Linus Torvalds f5e7e844a5 - More robust parsing especially of xattr data in JFFS2
- Updates to mxc_nand and gpmi drivers to support new boards and device tree
  - Improve consistency of information about ECC strength in NAND devices
  - Clean up partition handling of plat_nand
  - Support NAND drivers without dedicated access to OOB area
  - BCH hardware ECC support for OMAP
  - Other fixes and cleanups, and a few new device IDs
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Merge tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd

Pull mtd update from David Woodhouse:
 - More robust parsing especially of xattr data in JFFS2
 - Updates to mxc_nand and gpmi drivers to support new boards and device tree
 - Improve consistency of information about ECC strength in NAND devices
 - Clean up partition handling of plat_nand
 - Support NAND drivers without dedicated access to OOB area
 - BCH hardware ECC support for OMAP
 - Other fixes and cleanups, and a few new device IDs

Fixed trivial conflict in drivers/mtd/nand/gpmi-nand/gpmi-nand.c due to
added include files next to each other.

* tag 'for-linus-3.5-20120601' of git://git.infradead.org/linux-mtd: (75 commits)
  mtd: mxc_nand: move ecc strengh setup before nand_scan_tail
  mtd: block2mtd: fix recursive call of mtd_writev
  mtd: gpmi-nand: define ecc.strength
  mtd: of_parts: fix breakage in Kconfig
  mtd: nand: fix scan_read_raw_oob
  mtd: docg3 fix in-middle of blocks reads
  mtd: cfi_cmdset_0002: Slight cleanup of fixup messages
  mtd: add fixup for S29NS512P NOR flash.
  jffs2: allow to complete xattr integrity check on first GC scan
  jffs2: allow to discriminate between recoverable and non-recoverable errors
  mtd: nand: omap: add support for hardware BCH ecc
  ARM: OMAP3: gpmc: add BCH ecc api and modes
  mtd: nand: check the return code of 'read_oob/read_oob_raw'
  mtd: nand: remove 'sndcmd' parameter of 'read_oob/read_oob_raw'
  mtd: m25p80: Add support for Winbond W25Q80BW
  jffs2: get rid of jffs2_sync_super
  jffs2: remove unnecessary GC pass on sync
  jffs2: remove unnecessary GC pass on umount
  jffs2: remove lock_super
  mtd: gpmi: add gpmi support for mx6q
  ...
2012-06-01 16:55:42 -07:00
Linus Torvalds 48445159e9 Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86
Pull x86 platform driver updates from Matthew Garrett:
 "Some significant improvements for the Sony driver on newer machines,
  but other than that mostly just minor fixes and a patch to remove the
  broken rfkill code from the Dell driver."

* 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86: (35 commits)
  apple-gmux: Fix up the suspend/resume patch
  dell-laptop: Remove rfkill code
  toshiba_acpi: Fix mis-merge
  dell-laptop: Add touchpad led support for Dell V3450
  acer-wmi: add 3 laptops to video backlight vendor mode quirk table
  sony-laptop: add touchpad enable/disable function
  sony-laptop: add missing Fn key combos for 0x100 handlers
  sony-laptop: add support for more WWAN modems
  sony-laptop: new keyboard backlight handle
  sony-laptop: add high speed battery charging function
  sony-laptop: support automatic resume on lid open
  sony-laptop: adjust error handling in finding SNC handles
  sony-laptop: add thermal profiles support
  sony-laptop: support battery care functions
  sony-laptop: additional debug statements
  sony-laptop: improve SNC initialization and acpi notify callback code
  sony-laptop: use kstrtoul to parse sysfs values
  sony-laptop: generalise ACPI calls into SNC functions
  sony-laptop: fix return path when no ACPI buffer is allocated
  sony-laptop: use soft rfkill status stored in hw
  ...
2012-06-01 16:51:37 -07:00
Linus Torvalds efff0471b0 Merge branch 'ux500/hickup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull arm fixes for ux500 mismerge mishap from Arnd Bergmann:
 "The device tree conversion for arm/ux500 in 3.5 turns out to be
  incomplete because of a mismerge done by Linus Walleij that I failed
  to notice early enough and that Lee Jones as the original author of
  those patches did not manage to fix during the -next cycle.  While we
  originally to get a much larger set of ux500 device tree enablement
  patches merged, this did not happen in time.

  After some discussion at Linaro Connect conference this week, Lee has
  been able to do damage control and provide a series to put the broken
  platform back into usable shape for both DT and non-DT based booting.

  This series has not been part of linux-next and is based on top of the
  current state of the upstream kernel rather than an -rc, but this is
  the best we could manage given the earlier breakage."

* 'ux500/hickup' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc:
  ARM: ux500: Enable probing of pinctrl through Device Tree
  ARM: ux500: Add support for ab8500 regulators into the Device Tree
  ARM: ux500: Provide regulator support for SMSC911x via Device Tree
  ARM: ux500: Allow PRCMU regulator to be probed during a DT enabled boot
  ARM: ux500: Apply db8500-prcmu regulator information to db8500 Device Tree
  ARM: ux500: Only initialise STE's UIBs on boards which support them
  ARM: ux500: Disable platform setup of the ab8500 when DT is enabled
  ARM: ux500: Use correct format for dynamic IRQ assignment
  ARM: ux500: Re-enable SMSC911x platform code registration during non-DT boots
  ARM: ux500: PRCMU related configuration and layout corrections for Device Tree
  ARM: ux500: Remove DB8500 PRCMU platform registration when DT is enabled
  ARM: ux500: Disable SMSC911x platform code registration when DT is enabled
  ARM: ux500: New DT:ed u8500_init_devices for one-by-one device enablement
  ARM: ux500: New DT:ed snowball_platform_devs for one-by-one device enablement
  pinctrl-nomadik: Allow Device Tree driver probing
2012-06-01 15:46:46 -07:00
Devendra Naga ad1be8d345 r8169: call netif_napi_del at errpaths and at driver unload
when register_netdev fails, the init'ed NAPIs by netif_napi_add must be
deleted with netif_napi_del, and also when driver unloads, it should
delete the NAPI before unregistering netdevice using unregister_netdev.

Signed-off-by: Devendra Naga <devendra.aaru@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-06-01 18:44:32 -04:00
Linus Torvalds 3ded7acfdd Merge branch 'drm-fixes' of git://people.freedesktop.org/~airlied/linux
Pull drm fixes from Dave Airlie:
 "A bunch of fixes:
   - vmware memory corruption
   - ttm spinlock balance
   - cirrus/mgag200 work in the presence of efifb
  and finally Alex and Jerome managed to track down a magic set of bits
  that on certain rv740 and evergreen cards allow the correct use of the
  complete set of render backends, this makes the cards operate
  correctly in a number of scenarios we had issues in before, it also
  manages to boost speed on benchmarks my large amounts on these
  specific gpus."

* 'drm-fixes' of git://people.freedesktop.org/~airlied/linux:
  drm/edid: Make the header fixup threshold tunable
  drm/radeon: fix regression in UMS CS ioctl
  drm/vmwgfx: Fix nasty write past alloced memory area
  drm/ttm: Fix spinlock imbalance
  drm/radeon: fixup tiling group size and backendmap on r6xx-r9xx (v4)
  drm/radeon: fix HD6790, HD6570 backend programming
  drm/radeon: properly program gart on rv740, juniper, cypress, barts, hemlock
  drm/radeon: fix bank information in tiling config
  drm/mgag200: kick off conflicting framebuffers earlier.
  drm/cirrus: kick out conflicting framebuffers earlier
  cirrus: avoid crash if driver fails to load
2012-06-01 15:40:29 -07:00
Sascha Hauer 4a43faf54e mtd: mxc_nand: move ecc strengh setup before nand_scan_tail
Since commit 6a918bade9, the mxc_nand driver
fails with:

Driver must set ecc.strength when using hardware ECC

This is because nand_scan_tail checks for correct ecc strength
settings, so we must set them up before nand_scan_tail.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Cc: stable@vger.kernel.org [3.4+]
Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2012-06-01 20:23:29 +01:00