firefly-linux-kernel-4.4.55.git
13 years agoBluetooth: Kill set but unused variable 'cmd' in cmtp_recv_capimsg()
David Miller [Thu, 19 May 2011 21:50:05 +0000 (17:50 -0400)]
Bluetooth: Kill set but unused variable 'cmd' in cmtp_recv_capimsg()

Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning
Stephen Boyd [Thu, 12 May 2011 23:50:09 +0000 (16:50 -0700)]
Bluetooth: Silence DEBUG_STRICT_USER_COPY_CHECKS=y warning

Enabling DEBUG_STRICT_USER_COPY_CHECKS causes the following
warning:

In function 'copy_from_user',
    inlined from 'rfcomm_sock_setsockopt' at
    net/bluetooth/rfcomm/sock.c:705:
arch/x86/include/asm/uaccess_64.h:65:
warning: call to 'copy_from_user_overflow' declared with
attribute warning: copy_from_user() buffer size is not provably
correct

presumably due to buf_size being signed causing GCC to fail to
see that buf_size can't become negative.

Cc: Marcel Holtmann <marcel@holtmann.org>
Cc: Gustavo F. Padovan <padovan@profusion.mobi>
Signed-off-by: Stephen Boyd <sboyd@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Fix check for the ERTM local busy state
Mat Martineau [Fri, 3 Jun 2011 23:21:10 +0000 (16:21 -0700)]
Bluetooth: Fix check for the ERTM local busy state

Local busy is encoded in a bitfield, but was not masked out correctly.

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Restore accidentally-deleted line
Mat Martineau [Fri, 3 Jun 2011 23:21:07 +0000 (16:21 -0700)]
Bluetooth: Restore accidentally-deleted line

When code was moved from l2cap_core.c to l2cap_sock.c in commit
6de0702b5b93da0ef097aa092b4597fbc024ebba, one line was dropped
from the old __l2cap_sock_close() implementation. This sk_state
change should still be in l2cap_chan_close().

Signed-off-by: Mat Martineau <mathewm@codeaurora.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Simplify hci_conn_accept_secure check
Waldemar Rymarkiewicz [Thu, 2 Jun 2011 12:24:52 +0000 (14:24 +0200)]
Bluetooth: Simplify hci_conn_accept_secure check

If the link key is secure (authenticated or combination 16 digit)
the sec_level will be always BT_SECURITY_HIGH. Therefore, instead
of checking the link key type simply check the sec_level on the link.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Add BT_POWER L2CAP socket option.
Jaikumar Ganesh [Tue, 24 May 2011 01:06:04 +0000 (18:06 -0700)]
Bluetooth: Add BT_POWER L2CAP socket option.

Add BT_POWER socket option used to control the power
characteristics of the underlying ACL link. When the remote end
has put the link in sniff mode and the host stack wants to send
data we need need to explicitly exit sniff mode to work well with
certain devices (For example, A2DP on Plantronics Voyager 855).
However, this causes problems with HID devices.

Hence, moving into active mode when sending data, irrespective
of who set the sniff mode has been made as a socket option. By
default, we will move into active mode. HID devices can set the
L2CAP socket option to prevent this from happening.

Currently, this has been implemented for L2CAP sockets. This has been
tested with incoming and outgoing L2CAP sockets for HID and A2DP.

Based on discussions on linux-bluetooth and patches submitted by
Andrei Emeltchenko.

Signed-off-by: Jaikumar Ganesh <jaikumar@google.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Verify a pin code in pin_code_reply
Waldemar Rymarkiewicz [Wed, 1 Jun 2011 15:28:48 +0000 (17:28 +0200)]
Bluetooth: Verify a pin code in pin_code_reply

As we cannot relay on a userspace mgmt api implementation we should verify
if pin_code_reply in fact contains the secure pin code.

If userspace replied with unsecure pincode when secure was required we will
send pin_code_neg_reply to the controller.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Remove a magic number
Waldemar Rymarkiewicz [Wed, 1 Jun 2011 15:28:47 +0000 (17:28 +0200)]
Bluetooth: Remove a magic number

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: fix sparse & gcc warnings
Johannes Berg [Wed, 1 Jun 2011 06:54:45 +0000 (08:54 +0200)]
Bluetooth: fix sparse & gcc warnings

sparse complains about a few things that should
be static.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Set 'peer_addr_type' in hci_le_connect()
Andre Guedes [Tue, 31 May 2011 17:20:57 +0000 (14:20 -0300)]
Bluetooth: Set 'peer_addr_type' in hci_le_connect()

Set the 'peer_addr_type' field of the LE Create Connection command
sent in hci_le_connect().

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Check advertising cache in hci_connect()
Andre Guedes [Tue, 31 May 2011 17:20:56 +0000 (14:20 -0300)]
Bluetooth: Check advertising cache in hci_connect()

When connecting to a LE device, we need to check the advertising
cache in order to know the address type of that device.

If its advertising entry is not found, the connection is not
established and hci_connect() returns error.

Change-Id: I234912abc53b859becbe79625b08bc3b6eacc143
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Remove useless check in hci_connect()
Andre Guedes [Tue, 31 May 2011 17:20:55 +0000 (14:20 -0300)]
Bluetooth: Remove useless check in hci_connect()

There is no need to check the connection's state since hci_conn_add()
has just created a new connection and its state has been set properly.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Acked-by: Ville Tervo <ville.tervo@nokia.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Add 'dst_type' field to struct hci_conn
Andre Guedes [Tue, 31 May 2011 17:20:54 +0000 (14:20 -0300)]
Bluetooth: Add 'dst_type' field to struct hci_conn

This patch adds a new field (dst_type) to the struct hci_conn which
holds the type of the destination address (bdaddr_t dst). This
approach is needed in order to use the struct hci_conn as an
abstraction of LE connections in HCI Layer. For non-LE this field
is ignored.

This patch also set properly the 'dst_type' field after initializing
LE hci_conn structures.

Change-Id: I1e363bb6de263fdb1fe976a5a16ed5debc9b8c0c
Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Refactor hci_auth_complete_evt function
Waldemar Rymarkiewicz [Tue, 31 May 2011 13:49:26 +0000 (15:49 +0200)]
Bluetooth: Refactor hci_auth_complete_evt function

Replace if(conn) with if(!conn) checking to avoid too many nested statements

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Fix auth_complete_evt for legacy units
Waldemar Rymarkiewicz [Tue, 31 May 2011 13:49:25 +0000 (15:49 +0200)]
Bluetooth: Fix auth_complete_evt for legacy units

Legacy devices don't re-authenticate the link properly if a link key
already exists.  Thus, don't update sec_level for this case even if
hci_auth_complete_evt indicates success. Otherwise the sec_level will
not reflect a real security on the link.

Signed-off-by: Waldemar Rymarkiewicz <waldemar.rymarkiewicz@tieto.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Advertising entries lifetime
Andre Guedes [Thu, 26 May 2011 19:23:53 +0000 (16:23 -0300)]
Bluetooth: Advertising entries lifetime

This patch adds a timer to clear 'adv_entries' after three minutes.

After some amount of time, the advertising entries cached during
the last LE scan should be considered expired and they should be
removed from the advertising cache.

It was chosen a three minutes timeout as an initial attempt. This
value might change in future.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Clear advertising cache before scanning
Andre Guedes [Thu, 26 May 2011 19:23:52 +0000 (16:23 -0300)]
Bluetooth: Clear advertising cache before scanning

The LE advertising cache should be cleared before performing a LE
scanning. This will force the cache to contain only fresh advertising
entries.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Add Advertising Report Meta Event handler
Andre Guedes [Thu, 26 May 2011 19:23:51 +0000 (16:23 -0300)]
Bluetooth: Add Advertising Report Meta Event handler

This patch adds a function to handle LE Advertising Report Meta
Events.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: LE advertising cache
Andre Guedes [Thu, 26 May 2011 19:23:50 +0000 (16:23 -0300)]
Bluetooth: LE advertising cache

This patch implements the LE advertising cache. It stores sensitive
information (bdaddr and bdaddr_type so far) gathered from LE
advertising report events.

Only advertising entries from connectables devices are added to the
cache.

Signed-off-by: Andre Guedes <andre.guedes@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Add advertising report meta event structs
Anderson Briglia [Thu, 26 May 2011 19:23:49 +0000 (16:23 -0300)]
Bluetooth: Add advertising report meta event structs

This patch adds definitions and a new struct for Advertising Report
Event from LE and Dual Mode controllers.

Signed-off-by: Anderson Briglia <anderson.briglia@openbossa.org>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Rename __l2cap_chan_close() to l2cap_chan_close()
Gustavo F. Padovan [Wed, 4 May 2011 22:42:50 +0000 (19:42 -0300)]
Bluetooth: Rename __l2cap_chan_close() to l2cap_chan_close()

To make it consistent with the rest of the API.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Remove export of l2cap_chan_clear_timer()
Gustavo F. Padovan [Wed, 4 May 2011 22:35:27 +0000 (19:35 -0300)]
Bluetooth: Remove export of l2cap_chan_clear_timer()

The call to l2cap_chan_clear_timer() is not really needed in l2cap_sock.c.
This patch also adds a call to l2cap_chan_clear_timer() to the only place
in __l2cap_sock_close() that wasn't calling it. It's safe call it there
because l2cap_chan_clear_timer() check first for timer_peding().

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: create channel timer to replace sk_timer
Gustavo F. Padovan [Mon, 2 May 2011 21:25:01 +0000 (18:25 -0300)]
Bluetooth: create channel timer to replace sk_timer

The new timer does not belong to struct sock, tought it still touch some
sock things, but this will be sorted out soon.

Change-Id: I55dc122657f3b8e80e76acf8c479e2d5c9889af5
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Add chan->chan_type struct member
Gustavo F. Padovan [Mon, 2 May 2011 20:13:55 +0000 (17:13 -0300)]
Bluetooth: Add chan->chan_type struct member

chan_type says if our chan is raw(direclty access to HCI),
connection less or connection oriented.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Create l2cap_chan_send()
Gustavo F. Padovan [Thu, 28 Apr 2011 21:50:17 +0000 (18:50 -0300)]
Bluetooth: Create l2cap_chan_send()

This move all the sending logic to l2cap_core.c, but we still have a
socket dependence there, struct msghdr. It will be removed in some of the
further commits.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Create __l2cap_chan_close()
Gustavo F. Padovan [Thu, 28 Apr 2011 20:55:53 +0000 (17:55 -0300)]
Bluetooth: Create __l2cap_chan_close()

This is actually __l2cap_sock_close() renamed to __l2cap_chan_close().
At a first look it may not make sense, but with the further cleanups that
will come it will.

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Remove unnecessary use of hci_dev_list_lock
Johan Hedberg [Fri, 20 May 2011 18:50:41 +0000 (11:50 -0700)]
Bluetooth: Remove unnecessary use of hci_dev_list_lock

The get_connections function has no need to use hci_dev_list_lock. The
code was there probably because of a copy-paste mistake.

Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Kill set but not used variable 'l2cap_sk' in rfcomm_sock_getsockopt_old()
David Miller [Thu, 19 May 2011 22:09:00 +0000 (18:09 -0400)]
Bluetooth: Kill set but not used variable 'l2cap_sk' in rfcomm_sock_getsockopt_old()

Change-Id: I33c0404c6dcf1d3e8bc39e8c583f073329add294
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: fix set but not used warning
Gustavo F. Padovan [Wed, 18 May 2011 21:14:45 +0000 (18:14 -0300)]
Bluetooth: fix set but not used warning

Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agoBluetooth: Allow unsegmented SDU retries on sock_queue_rcv_skb failure
Ruiyi Zhang [Fri, 13 May 2011 05:07:52 +0000 (13:07 +0800)]
Bluetooth: Allow unsegmented SDU retries on sock_queue_rcv_skb failure

In L2CAP_SDU_UNSEGMENTED case, if sock_queue_rcv_skb returns error,
l2cap_ertm_reassembly_sdu should not return 0 so as to insert the
skb into BUSY_QUEUE for later retries.

Signed-off-by: Ruiyi Zhang <Ruiyi.Zhang@Atheros.com>
Signed-off-by: Gustavo F. Padovan <padovan@profusion.mobi>
13 years agonet: wireless: bcmdhd: Fix crash if event queue is empty
Dmitry Shmidt [Mon, 11 Jul 2011 17:48:09 +0000 (10:48 -0700)]
net: wireless: bcmdhd: Fix crash if event queue is empty

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
13 years agonet: wireless: bcmdhd: Fix CFG80211 suspend/resume if interface is down
Dmitry Shmidt [Mon, 11 Jul 2011 17:45:33 +0000 (10:45 -0700)]
net: wireless: bcmdhd: Fix CFG80211 suspend/resume if interface is down

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
13 years agonet: wireless: bcmdhd: Add setband/getband private commands
Dmitry Shmidt [Fri, 8 Jul 2011 22:33:58 +0000 (15:33 -0700)]
net: wireless: bcmdhd: Add setband/getband private commands

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
13 years agonet: wireless: bcmdhd: Add packet filtering commands
Dmitry Shmidt [Fri, 8 Jul 2011 00:04:44 +0000 (17:04 -0700)]
net: wireless: bcmdhd: Add packet filtering commands

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
13 years agogpu: ion: Validate handles passed via the kernel api
Rebecca Schultz Zavin [Fri, 8 Jul 2011 00:07:56 +0000 (17:07 -0700)]
gpu: ion: Validate handles passed via the kernel api

Before freeing or sharing handles, confirm that they
are valid in the provided client

Change-Id: I06ec599c0b277fcb5417325a12ecbf8b2d248a7b
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
13 years agoplist: Remove the need to supply locks to plist heads
Dima Zavin [Fri, 8 Jul 2011 00:27:59 +0000 (17:27 -0700)]
plist: Remove the need to supply locks to plist heads

This was legacy code brought over from the RT tree and
is no longer necessary.

Signed-off-by: Dima Zavin <dima@android.com>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Cc: Daniel Walker <dwalker@codeaurora.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Andi Kleen <andi@firstfloor.org>
Cc: Lai Jiangshan <laijs@cn.fujitsu.com>
Link: http://lkml.kernel.org/r/1310084879-10351-2-git-send-email-dima@android.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
13 years agoMerge commit 'v3.0-rc6' into android-3.0
Dima Zavin [Fri, 8 Jul 2011 00:55:44 +0000 (17:55 -0700)]
Merge commit 'v3.0-rc6' into android-3.0

13 years agonet: wireless: bcmdhd: Fix private command output
Dmitry Shmidt [Thu, 7 Jul 2011 21:57:23 +0000 (14:57 -0700)]
net: wireless: bcmdhd: Fix private command output

Signed-off-by: Dmitry Shmidt <dimitrysh@google.com>
13 years agonetfitler: xt_qtaguid: add another missing spin_unlock.
JP Abgrall [Thu, 7 Jul 2011 03:09:38 +0000 (20:09 -0700)]
netfitler: xt_qtaguid: add another missing spin_unlock.

This time the symptom is caused by tagging the same socket twice
without untagging it in between.
This would cause it to not unlock, and return.

Signed-off-by: JP Abgrall <jpa@google.com>
13 years agoion: fix ION_HEAP_<xxx>_MASK definitions
Iliyan Malchev [Wed, 6 Jul 2011 23:53:21 +0000 (16:53 -0700)]
ion: fix ION_HEAP_<xxx>_MASK definitions

Signed-off-by: Iliyan Malchev <malchev@google.com>
13 years agoUSB: OTG: Take wakelock when VBUS present
Todd Poynor [Sat, 2 Jul 2011 00:19:56 +0000 (17:19 -0700)]
USB: OTG: Take wakelock when VBUS present

Enabled by default, can disable with:
   echo N > /sys/module/otg_wakelock/parameters/enabled

Change-Id: I34974624c52ae23490852b44c270d2f326cf6116
Signed-off-by: Todd Poynor <toddpoynor@google.com>
13 years agogpu: ion: Fix deferencing ERR_PTR
Choi, Jong-Hwan [Thu, 7 Jul 2011 00:07:04 +0000 (09:07 +0900)]
gpu: ion: Fix deferencing ERR_PTR

Change-Id: I986c380d75591571890f1a2cba1405e66789b25c
Signed-off-by: Choi, Jong-Hwan <jhbird.choi@samsung.com>
13 years agogpu: ion: Fix possible memory leak
Choi, Jong-Hwan [Thu, 7 Jul 2011 00:06:17 +0000 (09:06 +0900)]
gpu: ion: Fix possible memory leak

Change-Id: I66f5ad2c95513dfab9f4fc5ae2fcb1316f486d34
Signed-off-by: Choi, Jong-Hwan <jhbird.choi@samsung.com>
13 years agogpu: ion: Remove redunant code from ion_open
Rebecca Schultz Zavin [Thu, 7 Jul 2011 01:07:24 +0000 (18:07 -0700)]
gpu: ion: Remove redunant code from ion_open

ion_client_create now does a lookup, so this need not
also be done from ion_open

Change-Id: Icb101bbf514bf2e40b4b5d9b320130bf185349aa
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
13 years agogpu: ion: Fix bug in ion client destroy
Rebecca Schultz Zavin [Thu, 7 Jul 2011 01:07:01 +0000 (18:07 -0700)]
gpu: ion: Fix bug in ion client destroy

ion_client_destroy kernel api should only delete the client
if it's refcount has gone to zero.

Change-Id: Iaa662bd82d67279a9807e01f9a24aebe3d21c17d
Signed-off-by: Rebecca Schultz Zavin <rebecca@android.com>
13 years agonetfilter: qtaguid: fix bad-arg handling when tagging socket
JP Abgrall [Wed, 6 Jul 2011 19:05:49 +0000 (12:05 -0700)]
netfilter: qtaguid: fix bad-arg handling when tagging socket

When processing args passed to the procfs ctrl, if the tag was
invalid it would exit without releasing the spin_lock...
Bye bye scheduling.

Signed-off-by: JP Abgrall <jpa@google.com>
Change-Id: Ic1480ae9d37bba687586094cf6d0274db9c5b28a

13 years agoLinux 3.0-rc6
Linus Torvalds [Mon, 4 Jul 2011 22:56:24 +0000 (15:56 -0700)]
Linux 3.0-rc6

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
Linus Torvalds [Mon, 4 Jul 2011 22:54:37 +0000 (15:54 -0700)]
Merge git://git./linux/kernel/git/jejb/scsi-rc-fixes-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: (277 commits)
  [SCSI] isci: fix checkpatch errors
  isci: Device reset should request sas_phy_reset(phy, true)
  isci: pare back error messsages
  isci: cleanup silicon revision detection
  isci: merge scu_unsolicited_frame.h into unsolicited_frame_control.h
  isci: merge sata.[ch] into request.c
  isci: kill 'get/set' macros
  isci: retire scic_sds_ and scic_ prefixes
  isci: unify isci_host and scic_sds_controller
  isci: unify isci_remote_device and scic_sds_remote_device
  isci: unify isci_port and scic_sds_port
  isci: fix scic_sds_remote_device_terminate_requests
  isci: unify isci_phy and scic_sds_phy
  isci: unify isci_request and scic_sds_request
  isci: rename / clean up scic_sds_stp_request
  isci: preallocate requests
  isci: combine request flags
  isci: unify can_queue tracking on the tci_pool, uplevel tag assignment
  isci: Terminate dev requests on FIS err bit rx in NCQ
  isci: fix frame received locking
  ...

13 years agoMerge branch 'at91/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux...
Linus Torvalds [Mon, 4 Jul 2011 22:54:18 +0000 (15:54 -0700)]
Merge branch 'at91/fixes' of git://git./linux/kernel/git/arm/linux-2.6-arm-soc

* 'at91/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/linux-2.6-arm-soc:
  AT91: Change nand buswidth logic to match hardware default configuration
  at91: Use "pclk" as con_id on at91cap9 and at91rm9200
  at91: fix udc, ehci and mmc clock device name for cap9/9g45/9rl
  atmel_serial: fix internal port num
  at91: fix at91_set_serial_console: use platform device id

13 years agoMerge branch 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel...
Linus Torvalds [Mon, 4 Jul 2011 22:53:53 +0000 (15:53 -0700)]
Merge branch 'fbdev-fixes-for-linus' of git://git./linux/kernel/git/lethal/fbdev-3.x

* 'fbdev-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/fbdev-3.x:
  vesafb: fix memory leak
  fbdev: amba: Link fb device to its parent
  fsl-diu-fb: remove check for pixel clock ranges
  udlfb: Correct sub-optimal resolution selection.
  hecubafb: add module_put on error path in hecubafb_probe()
  sm501fb: fix section mismatch warning
  gx1fb: Fix section mismatch warnings
  fbdev: sh_mobile_meram: Correct pointer check for YCbCr chroma plane

13 years agoRDMA: Check for NULL mode in .devnode methods
Goldwyn Rodrigues [Mon, 4 Jul 2011 16:26:57 +0000 (09:26 -0700)]
RDMA: Check for NULL mode in .devnode methods

Commits 71c29bd5c235 ("IB/uverbs: Add devnode method to set path/mode")
and c3af0980ce01 ("IB: Add devnode methods to cm_class and umad_class")
added devnode methods that set the mode.

However, these methods don't check for a NULL mode, and so we get a
crash when unloading modules because devtmpfs_delete_node() calls
device_get_devnode() with mode == NULL.

Add the missing checks.

Signed-off-by: Goldwyn Rodrigues <rgoldwyn@suse.de>
[ Also fix cm.c.  - Roland ]
Signed-off-by: Roland Dreier <roland@purestorage.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
13 years agoAT91: Change nand buswidth logic to match hardware default configuration
Nicolas Ferre [Fri, 1 Jul 2011 10:25:24 +0000 (12:25 +0200)]
AT91: Change nand buswidth logic to match hardware default configuration

The recently modified nand buswitth configuration is not aligned with
board reality: the double footprint on boards is always populated with 8bits
buswidth nand flashes.
So we have to consider that without particular configuration the 8bits
buswidth is selected by default.
Moreover, the previous logic was always using !board_have_nand_8bit(), we
change it to a simpler: board_have_nand_16bit().

Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Tested-by: Ludovic Desroches <ludovic.desroches@atmel.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
13 years agovesafb: fix memory leak
Daniel J Blueman [Mon, 27 Jun 2011 23:08:53 +0000 (23:08 +0000)]
vesafb: fix memory leak

When releasing framebuffer, free colourmap allocations.

Signed-off-by: Daniel J Blueman <daniel.blueman@gmail.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
13 years agoMerge branch 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspe...
Linus Torvalds [Sun, 3 Jul 2011 20:33:16 +0000 (13:33 -0700)]
Merge branch 'pm-fixes' of git://git./linux/kernel/git/rafael/suspend-2.6

* 'pm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/suspend-2.6:
  PM / Runtime: Update documentation regarding driver removal
  PM: Documentation: fix typo: pm_runtime_idle_sync() doesn't exist.

13 years ago[SCSI] isci: fix checkpatch errors
James Bottomley [Sun, 3 Jul 2011 19:14:45 +0000 (14:14 -0500)]
[SCSI] isci: fix checkpatch errors

Signed-off-by: James Bottomley <JBottomley@Parallels.com>
13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/djbw/isci
James Bottomley [Sun, 3 Jul 2011 19:19:29 +0000 (14:19 -0500)]
Merge git://git./linux/kernel/git/djbw/isci

13 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6
Linus Torvalds [Sun, 3 Jul 2011 18:12:21 +0000 (11:12 -0700)]
Merge git://git./linux/kernel/git/sfrench/cifs-2.6

* git://git.kernel.org/pub/scm/linux/kernel/git/sfrench/cifs-2.6:
  cifs: set socket send and receive timeouts before attempting connect

13 years agoMerge branch 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelv...
Linus Torvalds [Sun, 3 Jul 2011 18:12:06 +0000 (11:12 -0700)]
Merge branch 'hwmon-for-linus' of git://git./linux/kernel/git/jdelvare/staging

* 'hwmon-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jdelvare/staging:
  hwmon: (k10temp) Update documentation for Fam12h
  hwmon-vid: Fix typo in VIA CPU name
  hwmon: (f71882fg) Add support for the F71869A
  hwmon: Use <> rather than () around my e-mail address
  hwmon: (emc6w201) Properly handle all errors

13 years agohwmon: (k10temp) Update documentation for Fam12h
Clemens Ladisch [Sun, 3 Jul 2011 11:32:54 +0000 (13:32 +0200)]
hwmon: (k10temp) Update documentation for Fam12h

Add some CPU series IDs and links to the Fam12h datasheets.

Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agohwmon-vid: Fix typo in VIA CPU name
Jean Delvare [Sun, 3 Jul 2011 11:32:54 +0000 (13:32 +0200)]
hwmon-vid: Fix typo in VIA CPU name

It's Nehemiah, not Nemiah.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
13 years agohwmon: (f71882fg) Add support for the F71869A
Hans de Goede [Sun, 3 Jul 2011 11:32:53 +0000 (13:32 +0200)]
hwmon: (f71882fg) Add support for the F71869A

The F71869A is almost the same as the F71869F/E, except that it has
the normal number of temp and pwm zones for a F71882FG derived chip,
rather then the limited number of the F71869F/E.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Max Baldwin <archerseven@gmail.com>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agohwmon: Use <> rather than () around my e-mail address
Hans de Goede [Sun, 3 Jul 2011 11:32:53 +0000 (13:32 +0200)]
hwmon: Use <> rather than () around my e-mail address

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Jean Delvare <khali@linux-fr.org>
13 years agohwmon: (emc6w201) Properly handle all errors
Jean Delvare [Sun, 3 Jul 2011 11:32:53 +0000 (13:32 +0200)]
hwmon: (emc6w201) Properly handle all errors

Handle errors on 8-bit register reads and writes too. Also use likely
and unlikely to make the functions faster on success.

Signed-off-by: Jean Delvare <khali@linux-fr.org>
Acked-by: Guenter Roeck <guenter.roeck@ericsson.com>
13 years agoisci: Device reset should request sas_phy_reset(phy, true)
Jeff Skirvin [Fri, 1 Jul 2011 20:03:44 +0000 (13:03 -0700)]
isci: Device reset should request sas_phy_reset(phy, true)

The hard_reset parameter passed to the LLDD in the direct-attached
phy control case allows the LLDD to filter link failure events
while the direct-attached device reset is executing.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: pare back error messsages
Dan Williams [Fri, 1 Jul 2011 19:07:25 +0000 (12:07 -0700)]
isci: pare back error messsages

The messages emitted from task.c and some from request.c likely
duplicate (in a less undertandable way) what is reported by the
midlayer.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: cleanup silicon revision detection
Dan Williams [Fri, 1 Jul 2011 18:41:21 +0000 (11:41 -0700)]
isci: cleanup silicon revision detection

Perform checking per-pci device (even though all systems will only have
1 pci device in this generation), and delete support for silicon that
does not report a proper revision (i.e. A0).

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: merge scu_unsolicited_frame.h into unsolicited_frame_control.h
Dan Williams [Fri, 1 Jul 2011 18:15:12 +0000 (11:15 -0700)]
isci: merge scu_unsolicited_frame.h into unsolicited_frame_control.h

Does not need its own file.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: merge sata.[ch] into request.c
Dan Williams [Fri, 1 Jul 2011 17:52:55 +0000 (10:52 -0700)]
isci: merge sata.[ch] into request.c

Undo some needless separation.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: kill 'get/set' macros
Dan Williams [Fri, 1 Jul 2011 09:25:15 +0000 (02:25 -0700)]
isci: kill 'get/set' macros

Most of these simple dereference macros are longer than their open coded
equivalent.  Deleting enum sci_controller_mode is thrown in for good
measure.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: retire scic_sds_ and scic_ prefixes
Dan Williams [Fri, 1 Jul 2011 02:14:33 +0000 (19:14 -0700)]
isci: retire scic_sds_ and scic_ prefixes

The distinction between scic_sds_ scic_ and sci_ are no longer relevant
so just unify the prefixes on sci_.  The distinction between isci_ and
sci_ is historically significant, and useful for comparing the old
'core' to the current Linux driver. 'sci_' represents the former core as
well as the routines that are closer to the hardware and protocol than
their 'isci_' brethren. sci == sas controller interface.

Also unwind the 'sds1' out of the parameter structs.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: unify isci_host and scic_sds_controller
Dan Williams [Fri, 1 Jul 2011 00:38:32 +0000 (17:38 -0700)]
isci: unify isci_host and scic_sds_controller

Remove the distinction between these two implementations and unify on
isci_host (local instances named ihost).  Hmmm, we had two
'oem_parameters' instances, one was unused... nice.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: unify isci_remote_device and scic_sds_remote_device
Dan Williams [Thu, 30 Jun 2011 23:31:37 +0000 (16:31 -0700)]
isci: unify isci_remote_device and scic_sds_remote_device

Remove the distinction between these two implementations and unify on
isci_remote_device (local instances named idev).

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: unify isci_port and scic_sds_port
Dan Williams [Wed, 29 Jun 2011 20:09:25 +0000 (13:09 -0700)]
isci: unify isci_port and scic_sds_port

Remove the distinction between these two implementations and unify on
isci_port (local instances named iport).  The duplicate '->owning_port' and
'->isci_port' in both isci_phy and isci_remote_device will be fixed in a later
patch... this is just the straightforward rename/unification.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: fix scic_sds_remote_device_terminate_requests
Dan Williams [Wed, 29 Jun 2011 16:45:48 +0000 (09:45 -0700)]
isci: fix scic_sds_remote_device_terminate_requests

Commit 0815632 "isci: unify remote_device stop_handlers" introduced the
possibility that not all requests get terminated if we reach the
request_count.  Now that we properly reference count devices we don't
need this self-defense and can do the straightforward scan of all active
requests.

Reported-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Acked-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: unify isci_phy and scic_sds_phy
Dan Williams [Tue, 28 Jun 2011 22:05:53 +0000 (15:05 -0700)]
isci: unify isci_phy and scic_sds_phy

They are one in the same object so remove the distinction.  The near
duplicate fields (owning_port, and isci_port) will be cleaned up
after the scic_sds_port isci_port unification.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: unify isci_request and scic_sds_request
Dan Williams [Mon, 27 Jun 2011 21:57:03 +0000 (14:57 -0700)]
isci: unify isci_request and scic_sds_request

They are one in the same object so remove the distinction.  The near
duplicate fields (owning_controller, and isci_host) will be cleaned up
after the scic_sds_contoller isci_host unification.

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: rename / clean up scic_sds_stp_request
Dan Williams [Mon, 27 Jun 2011 18:56:41 +0000 (11:56 -0700)]
isci: rename / clean up scic_sds_stp_request

* Rename scic_sds_stp_request to isci_stp_request
* Remove the unused fields and union indirection

Reported-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: preallocate requests
Dan Williams [Fri, 17 Jun 2011 21:18:39 +0000 (14:18 -0700)]
isci: preallocate requests

the dma_pool interface is optimized for object_size << page_size which
is not the case with isci_request objects and the dma_pool routines show
up in the top of the profile.

The old io_request_table which tracked whether tci slots were in-flight
or not is replaced with an IREQ_ACTIVE flag per request.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: combine request flags
Dan Williams [Thu, 23 Jun 2011 21:33:48 +0000 (14:33 -0700)]
isci: combine request flags

Combine three bools into one unsigned long 'flags'.  Doesn't increase the
request size due to packing. (to do: optimize the structure layout).

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: unify can_queue tracking on the tci_pool, uplevel tag assignment
Dan Williams [Tue, 28 Jun 2011 20:47:09 +0000 (13:47 -0700)]
isci: unify can_queue tracking on the tci_pool, uplevel tag assignment

The tci_pool tracks our outstanding command slots which are also the 'index'
portion of our tags.  Grabbing the tag early in ->lldd_execute_task let's us
drop the isci_host_can_queue() and ->was_tag_assigned_by_user infrastructure.
->was_tag_assigned_by_user required the task context to be duplicated in
request-local buffer.  With the tci established early we can build the
task_context directly into its final location and skip a memcpy.

With the task context buffer at a known address at request construction we
have the opportunity/obligation to also fix sgl handling.  This rework feels
like it belongs in another patch but the sgl handling and task_context are too
intertwined.
1/ fix the 'ab' pair embedded in the task context to point to the 'cd' pair in
   the task context (previously we were prematurely linking to the staging
   buffer).
2/ fix the broken iteration of pio sgls that assumes all sgls are relative to
   the request, and does a dangerous looking reverse lookup of physical
   address to virtual address.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: Terminate dev requests on FIS err bit rx in NCQ
Jeff Skirvin [Fri, 24 Jun 2011 00:09:02 +0000 (17:09 -0700)]
isci: Terminate dev requests on FIS err bit rx in NCQ

When the remote device transitions to a not-ready state because of
an NCQ error condition, all outstanding requests to that device
are terminated and completed to libsas on the normal path.  The
device then waits for a READ LOG EXT command to issue on the task
management path.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: fix frame received locking
Dan Williams [Fri, 24 Jun 2011 06:44:52 +0000 (23:44 -0700)]
isci: fix frame received locking

Updates to the frame_rcvd before need to be atomic with respect to when
they are evaluated by libsas.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: possible buffer overflow in isci_parse_oem_parameters fixed
Maciej Patelczyk [Tue, 21 Jun 2011 22:03:13 +0000 (22:03 +0000)]
isci: possible buffer overflow in isci_parse_oem_parameters fixed

scu_index is a parameter of isci_parse_eom_parameters and is an index
in controller table. There is a check: scu_index > SCI_MAX_CONTROLLERS
which is insufficient and should be: scu_index >= SCI_MAX_CONTROLLERS.
scu_index is used as an index in the table which size is
SCI_MAX_CONTROLLERS.

Signed-off-by: Maciej Patelczyk <maciej.patelczyk@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: fix isci_task_execute_tmf completion
Dan Williams [Tue, 21 Jun 2011 23:23:03 +0000 (16:23 -0700)]
isci: fix isci_task_execute_tmf completion

1/ fix the timeout for wait_for_completion_timeout
2/ In the tmf timeout case we need to wait for our termination callback
3/ Once the request is successfully started it will be freed according to the
   normal lifetime for requests.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: fix support for arbitrarily large smp requests
Dan Williams [Thu, 16 Jun 2011 23:59:56 +0000 (16:59 -0700)]
isci: fix support for arbitrarily large smp requests

Instead of duplicating the smp request buffer reuse the one provided by
libsas.  This future proofs the driver to support arbitrarily large smp
requests, and shrinks the request structure size by ~700 bytes.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: fix dma_unmap_sg usage
Dan Williams [Fri, 17 Jun 2011 17:40:43 +0000 (10:40 -0700)]
isci: fix dma_unmap_sg usage

One bug and a cleanup:
1/ Fix cases where we were unmapping invalid addresses (smp requests were
   being unmapped)

[  604.662770] ------------[ cut here ]------------
[  604.668026] WARNING: at lib/dma-debug.c:800 check_unmap+0x418/0x740()
[  604.675315] Hardware name: SandyBridge Platform
[  604.680465] isci 0000:03:00.0: DMA-API: device driver tries to free an invalid DMA memory address

2/ The unmap routine is too large to be an inline function, and
   isci_request_io_request_get_next_sge is unused.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: fix smp response frame overrun
Dan Williams [Fri, 17 Jun 2011 00:20:35 +0000 (17:20 -0700)]
isci: fix smp response frame overrun

Due to a typo we currently copy way too much when copying over the
response data, but since a request is likely backed by a full page
allocation we don't corrupt live data.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: kill device_sequence
Dan Williams [Fri, 17 Jun 2011 20:34:43 +0000 (13:34 -0700)]
isci: kill device_sequence

Now that we have upleveled device reassignment protection to the
isci_remote_device reference count we no longer need this level of
self-defense.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: kill isci_remote_device_change_state()
Dan Williams [Thu, 16 Jun 2011 18:26:12 +0000 (11:26 -0700)]
isci: kill isci_remote_device_change_state()

Now that "stopping/stopped" are one in the same and signalled by a NULL device
pointer the rest of the device status infrastructure can be removed (->status
and ->state_lock).  The "not ready for i/o state" is replaced with a state
flag, and is evaluated under scic_lock so that we don't see transients from
taking the device reference to submitting the i/o.

This also fixes a potential leakage of can_queue slots in the rare case that
SAS_TASK_ABORTED is set at submission.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: atomic device lookup and reference counting
Dan Williams [Tue, 14 Jun 2011 00:39:44 +0000 (17:39 -0700)]
isci: atomic device lookup and reference counting

We have unsafe references to remote devices that are notified to
disappear at lldd_dev_gone.  In order to clean this up we need a single
canonical source for device lookups and stable references once a lookup
succeeds.  Towards that end guarantee that domain_device.lldd_dev is
NULL as soon as we start the process of stopping a device.  Any code
path that wants to safely lookup a remote device must do so through
task->dev->lldd_dev (isci_lookup_device()).

For in-flight references outside of scic_lock we need reference counting
to ensure that the device is not recycled before we are done with it.
Simplify device back references to just scic_sds_request.target_device
which is now the only permissible internal reference that is maintained
relative to the reference count.

There were two occasions where we wanted new i/o's to be treated as
SAS_TASK_UNDELIVERED but where the domain_dev->lldd_dev link is still
intact.  Introduce a 'gone' flag to prevent i/o while waiting for libsas
to take action on the port down event.

One 'core' leftover is that we currently call
scic_remote_device_destruct() from isci_remote_device_deconstruct()
which is called when the 'core' says the device is stopped.  It would be
more natural for the final put to trigger
isci_remote_device_deconstruct() but this implementation is deferred as
it requires other changes.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: fix ssp response iu buffer size in isci_tmf
Dan Williams [Wed, 15 Jun 2011 18:11:03 +0000 (11:11 -0700)]
isci: fix ssp response iu buffer size in isci_tmf

In isci_task_request_complete() we save the response/sense data from the
command.  Make sure isci_tmf has enough space to hold the full response.

[ it does not look like we actually use this data, and
  response_data_len/sense_data_len should be specifying the byte count,
  in any event do the simple fix first so we don't corrupt memory ]

Reported-by: Adam Gruchala <adam.gruchala@intel.com>
Tested-by: Edmund Nadolski <edmund.nadolski@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: cleanup request allocation
Dan Williams [Mon, 13 Jun 2011 07:51:30 +0000 (00:51 -0700)]
isci: cleanup request allocation

Rather than return an error code and update a pointer that was passed by
reference just return the request object directly (or null if allocation
failed).

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: cleanup/optimize queue increment macros
Dan Williams [Thu, 9 Jun 2011 23:04:28 +0000 (16:04 -0700)]
isci: cleanup/optimize queue increment macros

Every single i/o or event completion incurs a test and branch to see if
the cycle bit changed.  For power-of-2 queue sizes the cycle bit can be
read directly from the rollover of the queue pointer.

Likely premature optimization, but the hidden if() and hidden
assignments / side-effects in the macros were already asking to be
cleaned up.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: cleanup tag macros
Dan Williams [Thu, 9 Jun 2011 18:06:58 +0000 (11:06 -0700)]
isci: cleanup tag macros

A tag is a 16 bit number where the upper four bits is a sequence number
and the remainder is the task context index (tci).  Sanitize the macro
names and shave 256-bytes out of scic_sds_controller by reducing the size of
io_request_sequence.

scic_sds_io_tag_construct --> ISCI_TAG
scic_sds_io_tag_get_sequence --> ISCI_TAG_SEQ
scic_sds_io_tag_get_index() --> ISCI_TAG_TCI
scic_sds_io_sequence_increment() [delete / open code]

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: cleanup/optimize pool implementation
Dan Williams [Wed, 8 Jun 2011 01:50:55 +0000 (18:50 -0700)]
isci: cleanup/optimize pool implementation

The circ_buf macros are ~6% faster, as measured by perf, because they take
advantage of power-of-two math assumptions i.e. no test and branch for
rollover. Their semantics are clearer than the hidden side effects in pool.h
(like sci_pool_get() which hides an assignment).

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: Disable link layer hang detection
Jeff Skirvin [Mon, 20 Jun 2011 21:09:31 +0000 (14:09 -0700)]
isci: Disable link layer hang detection

Some targets exceed the hang detect timer.  Use the OS timeout to
catch hung tasks.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: Hard reset failure will link reset all phys in the port
Jeff Skirvin [Mon, 20 Jun 2011 21:09:26 +0000 (14:09 -0700)]
isci: Hard reset failure will link reset all phys in the port

In the case where the hard reset process fails, each link in
the port is put through a link reset sequence.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: Explicitly decode remote node ready and suspended states
Jeff Skirvin [Mon, 20 Jun 2011 21:09:22 +0000 (14:09 -0700)]
isci: Explicitly decode remote node ready and suspended states

The remote node context should only signal a device reset condition
in a suspended state.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: fix isci_terminate_pending() list management
Dan Williams [Mon, 20 Jun 2011 22:11:22 +0000 (15:11 -0700)]
isci: fix isci_terminate_pending() list management

Walk through the list of pending requests being careful to consider that
multiple requests can be terminated when the lock is dropped (i.e.
invalidating the 'next' reference established by
list_for_each_entry_safe).

Also noticed that all callers to isci_terminate_pending_requests()
specifying terminating, so just drop the parameter.

Signed-off-by: Dan Williams <dan.j.williams@intel.com>
13 years agoisci: Handle timed-out request terminations correctly
Jeff Skirvin [Mon, 20 Jun 2011 21:09:16 +0000 (14:09 -0700)]
isci: Handle timed-out request terminations correctly

In the situation where a termination of an I/O times-out,
make sure that the linkage from the request to the task
is severed completely.  Also make sure that the selection
of tasks to terminate occurs under scic_lock.

Signed-off-by: Jeff Skirvin <jeffrey.d.skirvin@intel.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>