Commit Graph

482213 Commits

Author SHA1 Message Date
Malcolm Priestley
f4cf678fd7 staging: vt6655: deadcode remove zone file operations and vntconfiguration.dat
These are now all handled by mac80211.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:33:34 -07:00
Malcolm Priestley
c7b14ea096 staging: vt6655: reset tsf on dissociation
Ensuring that tsf counter does not run while idle.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
d855802b8d staging: vt6655: don't update bUpdateBBVGA when off channel
Check flag conf IEEE80211_CONF_OFFCHANNEL so that RSSI doesn't swing wildly
on scanning.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
f218f40d48 staging: vt6655: vnt_rx_data: uCurrRSSI should have the value of *rssi
Fixes issue of byBBVGANew is wrong in device_intr

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
9aa5bedaa0 staging: vt6655: fifo & frag control remove big endian values
Endian conversion now happens at run time only little endian
values are valid.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
a9c049b86d staging: vt6655: baseband.c timers replace spin lock
Use spin_lock_irqsave and spin_unlock_irqrestore

in functions TimerSQ3CallBack and TimerState1CallBack

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
10d6f1b743 staging: vt6655: device_init_registers replace spin lock
Use spin_lock_irqsave and spin_unlock_irqrestore.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
f038ad0e72 staging: vt6655: s_vGenerateTxParameter remove unused cbMACHdLen
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
837a38f71b staging: vt6655: baseband.c replace BIT0 with BIT(0)
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
b0a08a8a73 staging: vt6655: MACvSetDefaultKeyEntry replace WLAN_WEP104_KEYLEN
with WLAN_KEY_LEN_WEP40

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
e24c235b5d staging: vt6655: mac80211 conversion: PSbIsNextTBTTWakeUp convert to mac80211
Wake up to listen to next beacon when struct ieee80211_conf -> listen_interval == 1

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:31 -07:00
Malcolm Priestley
b4bdf94d7d staging: vt6655: vt6655_probe remove management pointers
All these pointers are now dead.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
7e5d88d89b staging: vt6655: mac80211 conversion: device_error remove legacy functions
Remove netif_stop_queue, bCmdRunning and timer functions

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
64fea6e455 staging: vt6655: phy type same as bb type
To maintain functionality

typedef enum _CARD_PHY_TYPE should have the same values as
typedef enum _VIA_PKT_TYPE

TODO both these types need merging.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
1f7a081abf staging: vt6655: switch driver over to mac80211
Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
14e5300631 staging: vt6655: mac80211 conversion: device_free_info
Remove net device code and add mac80211 unregister code.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
1d6d3c1a62 staging: vt6655: mac80211 conversion: device_init_registers remove legacy code
Remove pMgmt, byCurrentCh, VNTWIFIbConfigPhyMode, eEncryptionStatus and netif_stop_queue.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
3fbbb75f55 staging: vt6655: CARDbSetPhyParameter replace s_vSetRSPINF with CARDvSetRSPINF
Removing s_vSetRSPINF

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
c01ef29e38 staging: vt6655: mac80211 conversion: card.c use basic_rates
Use basic_rates to find cck and ofdm rates.

wBasicRate will be removed later.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
0614a0e84d staging: vt6655: mac80211 conversion: changes to CARDbSetPhyParameter
CARDbSetPhyParameter appears to use two different strutures to find supported
rates.

Remove PWLAN_IE_SUPP_RATES and use basic_rates to find rates supported.

mac80211 now sets bShortSlotTime, bBarkerPreambleMd and byPreambleType remove
these.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
e99d357c6f staging: vt6655: mac80211 conversion: enable power saving
Convert PSvEnablePowerSaving and PSvEnablePowerSaving

Remove mgmt->wCurrAID and use pDevice->current_aid

We nolonger send the PSbSendNullPacket.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:30 -07:00
Malcolm Priestley
b956374239 staging: vt6655: mac80211 conversion: changes to set channel
Remove call to sChannelTbl, the channel under mac80211 is always valid.

CARDbSetPhyParameter is nolonger set here.

RFbSetPower is now set on byBBType

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:29 -07:00
Malcolm Priestley
59918beada staging: vt6655: mac80211 conversion: device_tx_srv tx and add report rates
vnt_int_report_rate reports backs tx rate and is replacment for STAvUpdateTDStatCounter
and BSSvUpdateNodeTxCounter.

Replacing existing code.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:29 -07:00
Malcolm Priestley
e70abceb05 staging: vt6655: mac80211 conversion: changes to device_intr
Remove net device code.

Remove current measure code and function s_vCompleteCurrentMeasure
and switch code which are now handled by mac80211

Change beaconing to mac80211.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:29 -07:00
Malcolm Priestley
bc5d431c9b staging: vt6655: mac80211 conversion: device_print_info remove netdevice.
use dev_info for device name and pcid->irq for irq number.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:29 -07:00
Malcolm Priestley
000fe0f534 staging: vt6655: mac80211 conversion replace suspend resume functions
add vt6655_suspend and vt6655_resume

remove viawget_suspend and viawget_resume.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:29 -07:00
Malcolm Priestley
3d75b9e235 staging: vt6655: mac80211 conversion add channel bands
Add rates and channels according to rf type for vnt_init_bands which is a
mac80211 replacement for init_channel_table.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:31:29 -07:00
Malcolm Priestley
67013f2c0e staging: vt6655: mac80211 conversion add main mac80211 functions
Replace existing vt6655_probe with one converted to mac80211
with the following operations

vnt_tx_80211
vnt_start
vnt_stop
vnt_add_interface
vnt_remove_interface
vnt_config
vnt_bss_info_changed
vnt_prepare_multicast
vnt_configure
vnt_set_key
vnt_get_tsf
vnt_set_tsf
vnt_reset_tsf

The following variables are also added.
basic_rates
mc_list_count
mac_hw

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 13:30:55 -07:00
Nikolay Aleksandrov
d70127e8a9 inet: frags: remove the WARN_ON from inet_evict_bucket
The WARN_ON in inet_evict_bucket can be triggered by a valid case:
inet_frag_kill and inet_evict_bucket can be running in parallel on the
same queue which means that there has been at least one more ref added
by a previous inet_frag_find call, but inet_frag_kill can delete the
timer before inet_evict_bucket which will cause the WARN_ON() there to
trigger since we'll have refcnt!=1. Now, this case is valid because the
queue is being "killed" for some reason (removed from the chain list and
its timer deleted) so it will get destroyed in the end by one of the
inet_frag_put() calls which reaches 0 i.e. refcnt is still valid.

CC: Florian Westphal <fw@strlen.de>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McLean <chutzpah@gentoo.org>

Fixes: b13d3cbfb8 ("inet: frag: move eviction of queues to work queue")
Reported-by: Patrick McLean <chutzpah@gentoo.org>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-29 15:21:30 -04:00
Nikolay Aleksandrov
65ba1f1ec0 inet: frags: fix a race between inet_evict_bucket and inet_frag_kill
When the evictor is running it adds some chosen frags to a local list to
be evicted once the chain lock has been released but at the same time
the *frag_queue can be running for some of the same queues and it
may call inet_frag_kill which will wait on the chain lock and
will then delete the queue from the wrong list since it was added in the
eviction one. The fix is simple - check if the queue has the evict flag
set under the chain lock before deleting it, this is safe because the
evict flag is set only under that lock and having the flag set also means
that the queue has been detached from the chain list, so no need to delete
it again.
An important note to make is that we're safe w.r.t refcnt because
inet_frag_kill and inet_evict_bucket will sync on the del_timer operation
where only one of the two can succeed (or if the timer is executing -
none of them), the cases are:
1. inet_frag_kill succeeds in del_timer
 - then the timer ref is removed, but inet_evict_bucket will not add
   this queue to its expire list but will restart eviction in that chain
2. inet_evict_bucket succeeds in del_timer
 - then the timer ref is kept until the evictor "expires" the queue, but
   inet_frag_kill will remove the initial ref and will set
   INET_FRAG_COMPLETE which will make the frag_expire fn just to remove
   its ref.
In the end all of the queue users will do an inet_frag_put and the one
that reaches 0 will free it. The refcount balance should be okay.

CC: Florian Westphal <fw@strlen.de>
CC: Eric Dumazet <eric.dumazet@gmail.com>
CC: Patrick McLean <chutzpah@gentoo.org>

Fixes: b13d3cbfb8 ("inet: frag: move eviction of queues to work queue")
Suggested-by: Eric Dumazet <eric.dumazet@gmail.com>
Reported-by: Patrick McLean <chutzpah@gentoo.org>
Tested-by: Patrick McLean <chutzpah@gentoo.org>
Signed-off-by: Nikolay Aleksandrov <nikolay@redhat.com>
Reviewed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-29 15:21:30 -04:00
Tej Parkash
8f4eb70059 cnic: Update the rcu_access_pointer() usages
1. Remove the rcu_read_lock/unlock around rcu_access_pointer
2. Replace the rcu_dereference with rcu_access_pointer

Signed-off-by: Tej Parkash <tej.parkash@qlogic.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-29 15:07:28 -04:00
Linus Torvalds
d506aa68c2 Merge branch 'for-linus' of git://git.kernel.dk/linux-block
Pull block layer fixes from Jens Axboe:
 "A small collection of fixes for the current kernel.  This contains:

   - Two error handling fixes from Jan Kara.  One for null_blk on
     failure to add a device, and the other for the block/scsi_ioctl
     SCSI_IOCTL_SEND_COMMAND fixing up the error jump point.

   - A commit added in the merge window for the bio integrity bits
     unfortunately disabled merging for all requests if
     CONFIG_BLK_DEV_INTEGRITY wasn't set.  Reverse the logic, so that
     integrity checking wont disallow merges when not enabled.

   - A fix from Ming Lei for merging and generating too many segments.
     This caused a BUG in virtio_blk.

   - Two error handling printk() fixups from Robert Elliott, improving
     the information given when we rate limit.

   - Error handling fixup on elevator_init() failure from Sudip
     Mukherjee.

   - A fix from Tony Battersby, fixing up a memory leak in the
     scatterlist handling with scsi-mq"

* 'for-linus' of git://git.kernel.dk/linux-block:
  block: Fix merge logic when CONFIG_BLK_DEV_INTEGRITY is not defined
  lib/scatterlist: fix memory leak with scsi-mq
  block: fix wrong error return in elevator_init()
  scsi: Fix error handling in SCSI_IOCTL_SEND_COMMAND
  null_blk: Cleanup error recovery in null_add_dev()
  blk-merge: recaculate segment if it isn't less than max segments
  fs: clarify rate limit suppressed buffer I/O errors
  fs: merge I/O error prints into one line
2014-10-29 11:57:10 -07:00
Linus Torvalds
7f474df0a7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid
Pull HID fixes from Jiri Kosina:
 - workarounds for a couple of misbehaving Elan Touchscreens, by Adel
   Gadllah
 - fix for TransducerSerialNumber field implementation, by Jason Gerecke
 - a couple of new HID usages (added by HUT), by Olivier Gay

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/hid:
  HID: input: Fix TransducerSerialNumber implementation
  HID: add keyboard input assist hid usages
  HID: usbhid: enable always-poll quirk for Elan Touchscreen 016f
  HID: usbhid: enable always-poll quirk for Elan Touchscreen 009b
2014-10-29 11:52:35 -07:00
Hariprasad Shenai
cd03cf0158 cxgb4vf: Replace repetitive pci device ID's with right ones
Replaced repetive Device ID's which got added in commit b961f9a488
("cxgb4vf: Remove superfluous "idx" parameter of CH_DEVICE() macro")

Signed-off-by: Hariprasad Shenai <hariprasad@chelsio.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-29 14:48:12 -04:00
Linus Torvalds
8c78293213 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security
Pull Integrity subsystem fix from James Morris:
 "These changes fix a bug in xattr handling, where the evm and ima
  inode_setxattr() functions do not check for empty xattrs being passed
  from userspace (leading to user-triggerable null pointer
  dereferences)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security:
  evm: check xattr value length and type in evm_inode_setxattr()
  ima: check xattr value length and type in the ima_inode_setxattr()
2014-10-29 11:47:42 -07:00
Malcolm Priestley
89cf9be6e6 staging: vt6655: mac80211 conversion: s_uFillDataHead add power saving poll
Replace variable wCurrentRate with is_pspoll.

add current_aid to structure vnt_private which is to be used by
mac80211 operations.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 11:35:51 -07:00
Malcolm Priestley
7c0496d191 staging: vt6655: mac80211 conversion: s_vFillRTSHead convert to using struct ieee80211_hdr
Removing PSEthernetHeader

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 11:35:51 -07:00
Malcolm Priestley
9c71cb3209 staging: vt6655: dead code remove s_vFillFragParameter.
s_vFillFragParameter is nolonger used.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 11:35:51 -07:00
Malcolm Priestley
cfd9f0d6b1 staging: vt6655: mac80211 conversion: s_cbFillTxBufHead
Covert to handle mac80211 sk_buff data removing fragmentation processing
via s_vFillFragParameter and calls to vGenerateMACHeader and s_vSWencryption

fragmentation is now handled by mac80211.

There is still more todos with this function when legacy net device code
have been remove from driver.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 11:35:51 -07:00
Malcolm Priestley
01eec153ab staging: vt6655: mac8021 conversion: add new tx functions
vnt_fill_txkey a mac80211 repacement for s_vFillTxKey

vnt_generate_fifo_header mac80211 replacement for vGenerateFIFOHeader

vnt_beacon_make for making and despatching beacon.

vnt_beacon_enable to enabling beacon

struct vnt_tx_fifo_head is also added to replace typedef
struct tagSTxBufHead that will be removed later.

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 11:35:51 -07:00
Malcolm Priestley
fee7506a12 staging: vt6655: mac80211 conversion: add new key functions
vnt_key_init_table to initialize the table

vnt_set_keys to set the keys

Signed-off-by: Malcolm Priestley <tvboxspy@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 11:35:51 -07:00
Malcolm Priestley
33b1c8c13f staging: vt6655: mac80211 conversion: add new rx functions
vnt_receive_frame which replaces device_receive_frame

and vnt_rx_data which handles mac80211 rx data

structures ieee80211_hw, ieee80211_vif and variable rx_rate are added
in structure vnt_private

Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2014-10-29 11:35:51 -07:00
Lubomir Rintel
b2ed64a974 ipv6: notify userspace when we added or changed an ipv6 token
NetworkManager might want to know that it changed when the router advertisement
arrives.

Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Cc: Hannes Frederic Sowa <hannes@stressinduktion.org>
Cc: Daniel Borkmann <dborkman@redhat.com>
Acked-by: Daniel Borkmann <dborkman@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2014-10-29 14:35:32 -04:00
WANG Cong
d56109020d sch_pie: schedule the timer after all init succeed
Cc: Vijay Subramanian <vijaynsu@cisco.com>
Cc: David S. Miller <davem@davemloft.net>
Signed-off-by: Cong Wang <xiyou.wangcong@gmail.com>
Acked-by: Eric Dumazet <edumazet@google.com>
2014-10-29 14:28:01 -04:00
Linus Torvalds
19be9e8aa7 Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux
Pull powerpc updates from Michael Ellerman:
 "There's some bug fixes or cleanups to facilitate fixes, a MAINTAINERS
  update, and a new syscall (bpf)"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mpe/linux:
  powerpc/numa: ensure per-cpu NUMA mappings are correct on topology update
  powerpc/numa: use cached value of update->cpu in update_cpu_topology
  cxl: Fix PSL error due to duplicate segment table entries
  powerpc/mm: Use appropriate ESID mask in copro_calculate_slb()
  cxl: Refactor cxl_load_segment() and find_free_sste()
  cxl: Disable secondary hash in segment table
  Revert "powerpc/powernv: Fix endian bug in LPC bus debugfs accessors"
  powernv: Use _GLOBAL_TOC for opal wrappers
  powerpc: Wire up sys_bpf() syscall
  MAINTAINERS: nx-842 driver maintainer change
  powerpc/mm: Remove redundant #if case
  powerpc/mm: Fix build error with hugetlfs disabled
2014-10-29 11:11:44 -07:00
Thomas Petazzoni
9ff0bb5ba6 ARM: 8180/1: mm: implement no-highmem fast path in kmap_atomic_pfn()
Since CONFIG_HIGHMEM got enabled on ARMv5 Kirkwood, we have noticed a
very significant drop in networking performance. The test were
conducted on an OpenBlocks A7 board. Without this patch, the outgoing
performance measured with iperf are:

 - highmem OFF, TSO OFF   544 Mbit/s
 - highmem OFF, TSO ON	  942 Mbit/s
 - highmem ON,  TSO OFF   306 Mbit/s
 - highmem ON,  TSO ON    246 Mbit/s

On this Kirkwood platform, the L2 cache is a Feroceon cache, and with
this cache, all the range operations have to be done on virtual
addresses and not physical addresses. Therefore, whenever
CONFIG_HIGHMEM is enabled, the cache maintenance operations call
kmap_atomic_pfn() and kunmap_atomic().

However, kmap_atomic_pfn() does not implement the same fast path for
non-highmem pages as the one implemented in kmap_atomic(), and this is
one of the reason for the performance drop. While this patch does not
fully restore the performances, it clearly improves them a lot:

      	      	        without patch  with patch

 - highmem ON, TSO OFF   306 Mbit/s     387 Mbit/s
 - highmem ON, TSO ON    246 Mbit/s     434 Mbit/s

We're still far from the !CONFIG_HIGHMEM performances, but it does
improve a bit the situation.

Thanks a lot to Ezequiel Garcia and Gregory Clement for all the
testing work around this topic.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-10-29 17:22:07 +00:00
Fabio Estevam
6d0ec1dd90 ARM: 8183/1: l2c: Improve l2c310_of_parse() error message
Russell King suggested [1]:

"I'd ask for one change.  Please make all these messages start with
"L2C-310 OF" not "PL310 OF:".  The device is described in ARM
documentation as a L2C-310 not PL310.  (Also note the : is dropped
too - most of the other messages don't have the : either.)

The:

"PL310 OF: cache setting yield illegal associativity
PL310 OF: -1073346556 calculated, only 8 and 16 legal"

message could also be changed to something like:

"L2C-310 OF cache associativity %d invalid, only 8 or 16 permittedn"

[1] http://www.spinics.net/lists/arm-kernel/msg372776.html

Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-10-29 17:20:55 +00:00
Laura Abbott
005757298f ARM: 8181/1: Drop extra return statement
Commit 513510ddba
(common: dma-mapping: introduce common remapping functions)
managed to end up with an extra return statement from the
original patch. Drop it.

Signed-off-by: Laura Abbott <lauraa@codeaurora.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2014-10-29 17:20:51 +00:00
Greg Kroah-Hartman
9c19db5b11 Merge tag 'usb-serial-3.18-rc3' of git://git.kernel.org/pub/scm/linux/kernel/git/johan/usb-serial into usb-linus
Johan writes:

USB-serial fixes for v3.18-rc3

These updates remove two allocations of unused buffers from kobil_sct
and add some new device ids.

Signed-off-by: Johan Hovold <johan@kernel.org>
2014-10-29 09:24:42 -07:00
Dan Carpenter
072c44bf24 drm/radeon: remove some buggy dead code
The calculation of "num_shader_engines" has a precedence bug because
the right shift happens before the mask, but this variable is never used
so we can just delete it.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
2014-10-29 12:24:15 -04:00