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2013-01-08ath9k_hw: use the devres API for allocationsFelix Fietkau7-80/+37
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-08ath9k: use the devres API for allocations/mappingsFelix Fietkau7-170/+51
Signed-off-by: Felix Fietkau <nbd@openwrt.org> Acked-by: Luis R. Rodriguez <mcgrof@qca.qualcomm.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-08rt2800: refactor RFCSR initializationStanislaw Gruszka1-372/+423
rt2800_init_rfcsr() is too big, split RF initialization into per chip functions. Code will change, but we should setup the same values onto RF registers and in the same order as before. Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl> Signed-off-by: John W. Linville <linville@tuxdriver.com>
2013-01-07Merge branch 'for-john' of ↵John W. Linville17-386/+311
git://git.kernel.org/pub/scm/linux/kernel/git/iwlwifi/iwlwifi-next
2013-01-03iwlwifi: always check that grab_nic_access succeedsEmmanuel Grumbach6-43/+51
This allows to let sparse check that the NIC access is always released. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: fix spelling and value in LED registers.Eytan Lifshitz2-3/+3
Fix typo in the macro name and the wrong value. Signed-off-by: Eytan Lifshitz <eytan.lifshitz@intel.com> Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: move some PCIe calls to better placesJohannes Berg2-6/+5
Synchronizing the IRQ is pointless when we will then enable the RF-Kill interrupt again, but is needed before we free it and the data needed to handle IRQs; move it to the free function. Simiarly, cancelling the replenish work struct can move to the function that frees the RX data structures. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: request IRQ only onceJohannes Berg2-41/+25
There's no need to request the IRQ every time the device is started, we can request it just once. Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: don't treat a bool as an error codeEmmanuel Grumbach1-2/+2
iwl_trans_grab_nic_access returns a boolean. So ret should explicitely set to an error code and not rely on the value returned by iwl_trans_grab_nic_access. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: virtualize SRAM accessEmmanuel Grumbach9-98/+109
Different transports implement the access to the SRAM in different ways. Virtualize it. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: virtualize iwl_{grab,release}_nic_accessEmmanuel Grumbach8-108/+115
Since different transports have different ways to wake the up the NIC, we need to virtualize it. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: use __packedJohannes Berg1-4/+4
Use __packed instead of __attribute__((packed)). Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: let the op_mode run a FW while in RFKILLEmmanuel Grumbach3-6/+8
In some cases, the fw should run even if the NIC is in RFKILL. Make the API more flexible to allow that. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: don't verify fw after downloadEmmanuel Grumbach1-94/+0
No need to verify that the fw has been written correctly. In case it hasn't, we won't get ALIVE notification. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: clean up code in AGGEmmanuel Grumbach1-11/+10
If we take a pointer to the tid_data, then use it. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03iwlwifi: make the BC table layout configurableEmmanuel Grumbach4-1/+10
This is needed for newer NICs. Signed-off-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03mac80211: split TX aggregation stop actionJohannes Berg11-11/+33
When TX aggregation is stopped, there are a few different cases: - connection with the peer was dropped - session stop was requested locally - session stop was requested by the peer - connection was dropped while a session is stopping The behaviour in these cases should be different, if the connection is dropped then the driver should drop all frames, otherwise the frames may continue to be transmitted, aggregated in the case of a locally requested session stop or unaggregated in the case of the peer requesting session stop. Split these different cases so that the driver can act accordingly; however, treat local and remote stop the same way and ask the driver to not send frames as aggregated packets any more. In the case of connection drop, the stop callback the driver is otherwise supposed to call is no longer required. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03regulatory: use IS_ERR macro family for freq_reg_infoJohannes Berg3-22/+15
Instead of returning an error and filling a pointer return the pointer and an ERR_PTR value in error cases. Acked-by: Luis R. Rodriguez <mcgrof@do-not-panic.com> Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03regulatory: remove handling of channel bandwidthJohannes Berg3-12/+6
The channel bandwidth handling isn't really quite right, it assumes that a 40 MHz channel is really two 20 MHz channels, which isn't strictly true. This is the way the regulatory database handling is defined right now though so remove the logic to handle other channel widths. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2013-01-03mac80211_hwsim: allow testing paged RXJohannes Berg1-3/+23
Paged RX, i.e. SKBs with (some of) the data in pages instead of the SKB header data (skb->data) can behave differently in the stack and cause other bugs. To make debugging easier add an option to hwsim to test with such SKBs. Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2012-12-22Merge git://www.linux-watchdog.org/linux-watchdogLinus Torvalds17-444/+725
Pull watchdog updates from Wim Van Sebroeck: "This includes some fixes and code improvements (like clk_prepare_enable and clk_disable_unprepare), conversion from the omap_wdt and twl4030_wdt drivers to the watchdog framework, addition of the SB8x0 chipset support and the DA9055 Watchdog driver and some OF support for the davinci_wdt driver." * git://www.linux-watchdog.org/linux-watchdog: (22 commits) watchdog: mei: avoid oops in watchdog unregister code path watchdog: Orion: Fix possible null-deference in orion_wdt_probe watchdog: sp5100_tco: Add SB8x0 chipset support watchdog: davinci_wdt: add OF support watchdog: da9052: Fix invalid free of devm_ allocated data watchdog: twl4030_wdt: Change TWL4030_MODULE_PM_RECEIVER to TWL_MODULE_PM_RECEIVER watchdog: remove depends on CONFIG_EXPERIMENTAL watchdog: Convert dev_printk(KERN_<LEVEL> to dev_<level>( watchdog: DA9055 Watchdog driver watchdog: omap_wdt: eliminate goto watchdog: omap_wdt: delete redundant platform_set_drvdata() calls watchdog: omap_wdt: convert to devm_ functions watchdog: omap_wdt: convert to new watchdog core watchdog: WatchDog Timer Driver Core: fix comment watchdog: s3c2410_wdt: use clk_prepare_enable and clk_disable_unprepare watchdog: imx2_wdt: Select the driver via ARCH_MXC watchdog: cpu5wdt.c: add missing del_timer call watchdog: hpwdt.c: Increase version string watchdog: Convert twl4030_wdt to watchdog core davinci_wdt: preparation for switch to common clock framework ...
2012-12-22Merge tag 'dm-3.8-fixes' of ↵Linus Torvalds28-433/+473
git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm Pull dm update from Alasdair G Kergon: "Miscellaneous device-mapper fixes, cleanups and performance improvements. Of particular note: - Disable broken WRITE SAME support in all targets except linear and striped. Use it when kcopyd is zeroing blocks. - Remove several mempools from targets by moving the data into the bio's new front_pad area(which dm calls 'per_bio_data'). - Fix a race in thin provisioning if discards are misused. - Prevent userspace from interfering with the ioctl parameters and use kmalloc for the data buffer if it's small instead of vmalloc. - Throttle some annoying error messages when I/O fails." * tag 'dm-3.8-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/agk/linux-dm: (36 commits) dm stripe: add WRITE SAME support dm: remove map_info dm snapshot: do not use map_context dm thin: dont use map_context dm raid1: dont use map_context dm flakey: dont use map_context dm raid1: rename read_record to bio_record dm: move target request nr to dm_target_io dm snapshot: use per_bio_data dm verity: use per_bio_data dm raid1: use per_bio_data dm: introduce per_bio_data dm kcopyd: add WRITE SAME support to dm_kcopyd_zero dm linear: add WRITE SAME support dm: add WRITE SAME support dm: prepare to support WRITE SAME dm ioctl: use kmalloc if possible dm ioctl: remove PF_MEMALLOC dm persistent data: improve improve space map block alloc failure message dm thin: use DMERR_LIMIT for errors ...
2012-12-22Merge tag 'rdma-for-linus' of ↵Linus Torvalds21-214/+2233
git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband Pull more infiniband changes from Roland Dreier: "Second batch of InfiniBand/RDMA changes for 3.8: - cxgb4 changes to fix lookup engine hash collisions - mlx4 changes to make flow steering usable - fix to IPoIB to avoid pinning dst reference for too long" * tag 'rdma-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband: RDMA/cxgb4: Fix bug for active and passive LE hash collision path RDMA/cxgb4: Fix LE hash collision bug for passive open connection RDMA/cxgb4: Fix LE hash collision bug for active open connection mlx4_core: Allow choosing flow steering mode mlx4_core: Adjustments to Flow Steering activation logic for SR-IOV mlx4_core: Fix error flow in the flow steering wrapper mlx4_core: Add QPN enforcement for flow steering rules set by VFs cxgb4: Add LE hash collision bug fix path in LLD driver cxgb4: Add T4 filter support IPoIB: Call skb_dst_drop() once skb is enqueued for sending
2012-12-22dm stripe: add WRITE SAME supportMike Snitzer1-4/+6
Rename stripe_map_discard to stripe_map_range and reuse it for WRITE SAME bio processing. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm: remove map_infoMikulas Patocka13-50/+29
This patch removes map_info from bio-based device mapper targets. map_info is still used for request-based targets. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm snapshot: do not use map_contextMikulas Patocka1-13/+23
Eliminate struct map_info from dm-snap. map_info->ptr was used in dm-snap to indicate if the bio was tracked. If map_info->ptr was non-NULL, the bio was linked in tracked_chunk_hash. This patch removes the use of map_info->ptr. We determine if the bio was tracked based on hlist_unhashed(&c->node). If hlist_unhashed is true, the bio is not tracked, if it is false, the bio is tracked. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm thin: dont use map_contextMikulas Patocka1-36/+13
This patch removes endio_hook_pool from dm-thin and uses per-bio data instead. This patch removes any use of map_info in preparation for the next patch that removes map_info from bio-based device mapper. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm raid1: dont use map_contextMikulas Patocka1-9/+13
Don't use map_info any more in dm-raid1. map_info was used for writes to hold the region number. For this purpose we add a new field dm_bio_details to dm_raid1_bio_record. map_info was used for reads to hold a pointer to dm_raid1_bio_record (if the pointer was non-NULL, bio details were saved; if the pointer was NULL, bio details were not saved). We use dm_raid1_bio_record.details->bi_bdev for this purpose. If bi_bdev is NULL, details were not saved, if bi_bdev is non-NULL, details were saved. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm flakey: dont use map_contextMikulas Patocka1-4/+11
Replace map_info with a per-bio structure "struct per_bio_data" in dm-flakey. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm raid1: rename read_record to bio_recordMikulas Patocka1-11/+11
Rename struct read_record to bio_record in dm-raid1. In the following patch, the structure will be used for both read and write bios, so rename it. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm: move target request nr to dm_target_ioMikulas Patocka3-4/+5
This patch moves target_request_nr from map_info to dm_target_io and makes it accessible with dm_bio_get_target_request_nr. This patch is a preparation for the next patch that removes map_info. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm snapshot: use per_bio_dataMikulas Patocka1-35/+8
Replace tracked_chunk_pool with per_bio_data in dm-snap. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm verity: use per_bio_dataMikulas Patocka1-18/+4
Replace io_mempool with per_bio_data in dm-verity. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm raid1: use per_bio_dataMikulas Patocka1-34/+5
Replace read_record_pool with per_bio_data in dm-raid1. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm: introduce per_bio_dataMikulas Patocka3-20/+26
Introduce a field per_bio_data_size in struct dm_target. Targets can set this field in the constructor. If a target sets this field to a non-zero value, "per_bio_data_size" bytes of auxiliary data are allocated for each bio submitted to the target. These data can be used for any purpose by the target and help us improve performance by removing some per-target mempools. Per-bio data is accessed with dm_per_bio_data. The argument data_size must be the same as the value per_bio_data_size in dm_target. If the target has a pointer to per_bio_data, it can get a pointer to the bio with dm_bio_from_per_bio_data() function (data_size must be the same as the value passed to dm_per_bio_data). Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm kcopyd: add WRITE SAME support to dm_kcopyd_zeroMike Snitzer3-10/+33
Add WRITE SAME support to dm-io and make it accessible to dm_kcopyd_zero(). dm_kcopyd_zero() provides an asynchronous interface whereas the blkdev_issue_write_same() interface is synchronous. WRITE SAME is a SCSI command that can be leveraged for more efficient zeroing of a specified logical extent of a device which supports it. Only a single zeroed logical block is transfered to the target for each WRITE SAME and the target then writes that same block across the specified extent. The dm thin target uses this. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm linear: add WRITE SAME supportMike Snitzer1-1/+2
The linear target can already support WRITE SAME requests so signal this by setting num_write_same_requests to 1. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm: add WRITE SAME supportMike Snitzer1-5/+39
WRITE SAME bios have a payload that contain a single page. When cloning WRITE SAME bios DM has no need to modify the bi_io_vec attributes (and doing so would be detrimental). DM need only alter the start and end of the WRITE SAME bio accordingly. Rather than duplicate __clone_and_map_discard, factor out a common function that is also used by __clone_and_map_write_same. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm: prepare to support WRITE SAMEMike Snitzer1-1/+29
Allow targets to opt in to WRITE SAME support by setting 'num_write_same_requests' in the dm_target structure. A dm device will only advertise WRITE SAME support if all its targets and all its underlying devices support it. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm ioctl: use kmalloc if possibleMikulas Patocka1-13/+32
If the parameter buffer is small enough, try to allocate it with kmalloc() rather than vmalloc(). vmalloc is noticeably slower than kmalloc because it has to manipulate page tables. In my tests, on PA-RISC this patch speeds up activation 13 times. On Opteron this patch speeds up activation by 5%. This patch introduces a new function free_params() to free the parameters and this uses new flags that record whether or not vmalloc() was used and whether or not the input buffer must be wiped after use. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm ioctl: remove PF_MEMALLOCMikulas Patocka1-9/+4
When allocating memory for the userspace ioctl data, set some appropriate GPF flags directly instead of using PF_MEMALLOC. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm persistent data: improve improve space map block alloc failure messageJoe Thornber1-1/+1
Improve space map error message when unable to allocate a new metadata block. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm thin: use DMERR_LIMIT for errorsMike Snitzer1-10/+15
Throttle all errors logged from the IO path by dm thin. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm persistent data: use DMERR_LIMIT for errorsMike Snitzer3-21/+20
Nearly all of persistent-data is in the IO path so throttle error messages with DMERR_LIMIT to limit the amount logged when something has gone wrong. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm block manager: reinstate message when validator failsMike Snitzer1-1/+4
Reinstate a useful error message when the block manager buffer validator fails. This was mistakenly eliminated when the block manager was converted to use dm-bufio. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm raid: round region_size to power of twoJonathan Brassow1-1/+3
If the user does not supply a bitmap region_size to the dm raid target, a reasonable size is computed automatically. If this is not a power of 2, the md code will report an error later. This patch catches the problem early and rounds the region_size to the next power of two. Signed-off-by: Jonathan Brassow <jbrassow@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm thin: cleanup dead codeJoe Thornber1-14/+5
Remove unused @data_block parameter from cell_defer. Change thin_bio_map to use many returns rather than setting a variable. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm thin: rename cell_defer_except to cell_defer_no_holderJoe Thornber1-21/+21
Rename cell_defer_except() to cell_defer_no_holder() which describes its function more clearly. Signed-off-by: Joe Thornber <ejt@redhat.com> Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm snapshot: optimize track_chunkMikulas Patocka1-3/+2
track_chunk is always called with interrupts enabled. Consequently, we do not need to save and restore interrupt state in "flags" variable. This patch changes spin_lock_irqsave to spin_lock_irq and spin_unlock_irqrestore to spin_unlock_irq. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
2012-12-22dm raid: use DM_ENDIO_INCOMPLETEMikulas Patocka1-1/+1
Use a defined macro DM_ENDIO_INCOMPLETE instead of a numeric constant. Signed-off-by: Mikulas Patocka <mpatocka@redhat.com> Signed-off-by: Alasdair G Kergon <agk@redhat.com>
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