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* net: remove interrupt.h inclusion from netdevice.hAlexey Dobriyan2011-06-07150-0/+153
| | | | | | | | * remove interrupt.g inclusion from netdevice.h -- not needed * fixup fallout, add interrupt.h and hardirq.h back where needed. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* be2net: Fix Rx pause counter for lancerSelvin Xavier2011-06-071-2/+2
| | | | | | | | Fixed Rx pause counter for Lancer. Swapping hi and lo words. Signed-off-by: Selvin Xavier <selvin.xavier@emulex.com> Signed-off-by: Padmanabh Ratnakar <padmanabh.ratnakar@emulex.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* qlge: remove unecessary if statementGreg Dietsche2011-06-071-2/+0Star
| | | | | | | the code always returns 'status' regardless, so if(status) check is unecessary. Signed-off-by: Greg Dietsche <Gregory.Dietsche@cuw.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
* enic: Add support for MTU change via port profile on a dynamic vnicRoopa Prabhu2011-06-072-6/+68
| | | | | | | | | | | | | enic driver gets MTU change notifications for MTU changes in the port profile associated to a dynamic vnic. This patch adds support in enic driver to set new MTU on the dynamic vnic and dynamically adjust its buffers with new MTU size in response to such notifications. Signed-off-by: Roopa Prabhu <roprabhu@cisco.com> Signed-off-by: Vasanthy Kolluri <vkolluri@cisco.com> Signed-off-by: David Wang <dwang2@cisco.com> Signed-off-by: Christian Benvenuti <benve@cisco.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* macvlan: add VLAN filters to lowerdevJohn Fastabend2011-06-071-1/+38
| | | | | | | | | | Stacking VLANs on top of the macvlan device does not work if the lowerdev device is using vlan filters set by NETIF_F_HW_VLAN_FILTER. Add ndo ops to pass vlan calls to lowerdev. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* drivers/net: Remove unnecessary semicolonsJoe Perches2011-06-0523-27/+29
| | | | | | | | Semicolons are not necessary after switch/while/for/if braces so remove them. Signed-off-by: Joe Perches <joe@perches.com> Signed-off-by: David S. Miller <davem@davemloft.net>
* Merge branch 'master' of ↵David S. Miller2011-06-0451-265/+505
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
| * Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6Linus Torvalds2011-06-042-1/+2
| |\ | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6: [SCSI] Fix oops caused by queue refcounting failure
| | * [SCSI] Fix oops caused by queue refcounting failureJames Bottomley2011-06-022-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In certain circumstances, we can get an oops from a torn down device. Most notably this is from CD roms trying to call scsi_ioctl. The root cause of the problem is the fact that after scsi_remove_device() has been called, the queue is fully torn down. This is actually wrong since the queue can be used until the sdev release function is called. Therefore, we add an extra reference to the queue which is released in sdev->release, so the queue always exists. Reported-by: Parag Warudkar <parag.lkml@gmail.com> Cc: stable@kernel.org Signed-off-by: James Bottomley <jbottomley@parallels.com>
| * | Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6Linus Torvalds2011-06-0441-158/+269
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6: (40 commits) tg3: Fix tg3_skb_error_unmap() net: tracepoint of net_dev_xmit sees freed skb and causes panic drivers/net/can/flexcan.c: add missing clk_put net: dm9000: Get the chip in a known good state before enabling interrupts drivers/net/davinci_emac.c: add missing clk_put af-packet: Add flag to distinguish VID 0 from no-vlan. caif: Fix race when conditionally taking rtnl lock usbnet/cdc_ncm: add missing .reset_resume hook vlan: fix typo in vlan_dev_hard_start_xmit() net/ipv4: Check for mistakenly passed in non-IPv4 address iwl4965: correctly validate temperature value bluetooth l2cap: fix locking in l2cap_global_chan_by_psm ath9k: fix two more bugs in tx power cfg80211: don't drop p2p probe responses Revert "net: fix section mismatches" drivers/net/usb/catc.c: Fix potential deadlock in catc_ctrl_run() sctp: stop pending timers and purge queues when peer restart asoc drivers/net: ks8842 Fix crash on received packet when in PIO mode. ip_options_compile: properly handle unaligned pointer iwlagn: fix incorrect PCI subsystem id for 6150 devices ...
| | * \ Merge branch 'master' of ↵John W. Linville2011-06-0312-48/+124
| | |\ \ | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless-2.6 into for-davem
| | | * | iwl4965: correctly validate temperature valueStanislaw Gruszka2011-06-011-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In some cases we can read wrong temperature value. If after that temperature value will not be updated to good one, we badly configure tx power parameters and device is unable to send a data. Resolves: https://bugzilla.kernel.org/show_bug.cgi?id=35932 Cc: stable@kernel.org # 2.6.39+ Signed-off-by: Stanislaw Gruszka <sgruszka@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | | * | ath9k: fix two more bugs in tx powerDaniel Halperin2011-06-012-4/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is the same fix as commit 841051602e3fa18ea468fe5a177aa92b6eb44b56 Author: Matteo Croce <technoboy85@gmail.com> Date: Fri Dec 3 02:25:08 2010 +0100 The ath9k driver subtracts 3 dBm to the txpower as with two radios the signal power is doubled. The resulting value is assigned in an u16 which overflows and makes the card work at full power. in two more places. I grepped the ath tree and didn't find any others. Cc: stable@kernel.org Signed-off-by: Daniel Halperin <dhalperi@cs.washington.edu> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | | * | iwlagn: fix incorrect PCI subsystem id for 6150 devicesWey-Yi Guy2011-05-313-13/+22
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | For 6150 devices, modify the supported PCI subsystem ID. Cc: stable@kernel.org Signed-off-by: Wey-Yi Guy <wey-yi.w.guy@intel.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | | * | zd1211rw: fix to work on OHCIJussi Kivilinna2011-05-311-11/+42
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | zd1211 devices register 'EP 4 OUT' endpoint as Interrupt type on USB 2.0: Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 3 Transfer Type Interrupt Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 1 However on USB 1.1 endpoint becomes Bulk: Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0040 1x 64 bytes bInterval 0 Commit 37939810b937aba830dd751291fcdc51cae1a6cb assumed that endpoint is always interrupt type and changed usb_bulk_msg() calls to usb_interrupt_msg(). Problem here is that usb_bulk_msg() on interrupt endpoint selfcorrects the call and changes requested pipe to interrupt type (see usb_bulk_msg). However with usb_interrupt_msg() on bulk endpoint does not correct the pipe type to bulk, but instead URB is submitted with interrupt type pipe. So pre-2.6.39 used usb_bulk_msg() and therefore worked with both endpoint types, however in 2.6.39 usb_interrupt_msg() with bulk endpoint causes ohci_hcd to fail submitted URB instantly with -ENOSPC and preventing zd1211rw from working with OHCI. Fix this by detecting endpoint type and using correct endpoint/pipe types for URB. Also fix asynchronous zd_usb_iowrite16v_async() to use right URB type on 'EP 4 OUT'. Cc: stable@kernel.org Signed-off-by: Jussi Kivilinna <jussi.kivilinna@mbnet.fi> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | | * | wl12xx: fix oops in sched_scan when forcing a passive scanLuciano Coelho2011-05-311-3/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix kernel oops when trying to use passive scheduled scans. The reason was that in passive scans there are no SSIDs, so there was a NULL pointer dereference. To solve the problem, we now check the number of SSIDs provided in the sched_scan request and only access the list if there's one or more (ie. passive scan is not forced). We also force all the channels to be passive by adding the IEEE80211_CHAN_PASSIVE_SCAN flag locally before the checks in the wl1271_scan_get_sched_scan_channels() function. Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | | * | wl12xx: add separate config value for DFS dwell time on sched scanLuciano Coelho2011-05-313-2/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use a different value for DFS dwell time when performing a scheduled scan. Previously we were using the same value as for normal passive scans. This adds some flexibility between these two different types of passive scan. For now we use 150 TUs for DFS channel dwell time. This may need to be fine-tuned in the future. Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | | * | wl12xx: fix DFS channels handling in scheduled scanLuciano Coelho2011-05-312-11/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | DFS channels were never getting included in the scheduled scans, because they always contain the passive flag as well and the call was asking for DFS and active channels. Fix this by ignoring the passive flag when collecting DFS channels. Also, move the DFS channels in the channel list before the 5GHz active channels (this was implemented in the FW differently than specified). Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | | * | wl12xx: fix passive and radar channel generation for scheduled scanLuciano Coelho2011-05-311-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were comparing bitwise AND results with a boolean, so when the boolean was set to true, it was not matching as it should. Fix this by booleanizing the bitwise AND results with !!. Signed-off-by: Luciano Coelho <coelho@ti.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | | * | libertas: Set command sequence number later to ensure consistencyDaniel Drake2011-05-311-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Before this patch, the command sequence number is being set before lbs_queue_cmd() adds the command to the queue. However, lbs_queue_cmd() sometimes forces commands to queue-jump (e.g. CMD_802_11_WAKEUP_CONFIRM). It currently does this without considering that sequence numbers might need adjusting to keep things running in order. Fix this by setting the sequence number at a later stage, just before we're actually submitting the command to the hardware. Also fixes a possible race where seqnum was being modified outside of the driver lock. Signed-off-by: Daniel Drake <dsd@laptop.org> Acked-by: Dan Williams <dcbw@redhat.com> Signed-off-by: John W. Linville <linville@tuxdriver.com>
| | * | | tg3: Fix tg3_skb_error_unmap()Matt Carlson2011-06-031-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This function attempts to free one fragment beyond the number of fragments that were actually mapped. This patch brings back the limit to the correct spot. Signed-off-by: Matt Carlson <mcarlson@broadcom.com> Tested-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | drivers/net/can/flexcan.c: add missing clk_putJulia Lawall2011-06-021-3/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The failed_get label is used after the call to clk_get has succeeded, so it should be moved up above the call to clk_put. The failed_req labels doesn't do anything different than failed_get, so delete it. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression e1,e2; statement S; @@ e1 = clk_get@p1(...); ... when != e1 = e2 when != clk_put(e1) when any if (...) { ... when != clk_put(e1) when != if (...) { ... clk_put(e1) ... } * return@p3 ...; } else S // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | net: dm9000: Get the chip in a known good state before enabling interruptsMark Brown2011-06-021-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the DM9000 driver requests the primary interrupt before it resets the chip and puts it into a known good state. This means that if the chip is asserting interrupt for some reason we can end up with a screaming IRQ that the interrupt handler is unable to deal with. Avoid this by only requesting the interrupt after we've reset the chip so we know what state it's in. This started manifesting itself on one of my boards in the past month or so, I suspect as a result of some core infrastructure changes removing some form of mitigation against bad behaviour here, even when things boot it seems that the new code brings the interface up more quickly. Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | drivers/net/davinci_emac.c: add missing clk_putJulia Lawall2011-06-021-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Go to existing error handling code at the end of the function that calls clk_put. A simplified version of the semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r exists@ expression e1,e2; statement S; @@ e1 = clk_get@p1(...); ... when != e1 = e2 when != clk_put(e1) when any if (...) { ... when != clk_put(e1) when != if (...) { ... clk_put(e1) ... } * return@p3 ...; } else S // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk> Acked-by: Kevin Hilman <khilman@ti.com> Signed-off-by: David S. Miller <davem@davemloft.net>
| | * | | usbnet/cdc_ncm: add missing .reset_resume hookStefan Metzmacher2011-06-021-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This avoids messages like this after suspend: cdc_ncm 2-1.4:1.6: no reset_resume for driver cdc_ncm? cdc_ncm 2-1.4:1.7: no reset_resume for driver cdc_ncm? cdc_ncm 2-1.4:1.6: usb0: unregister 'cdc_ncm' usb-0000:00:1d.0-1.4, CDC NCM This is important for the Ericsson F5521gw GSM/UMTS modem. Otherwise modemmanager looses the fact that the cdc_ncm and cdc_acm devices belong together. The cdc_ether module does the same. Signed-off-by: Stefan Metzmacher <metze@samba.org> Signed-off-by: David S. Miller <davem@davemloft.net>
| * | | | Merge branch 'for-linus' of git://git.kernel.dk/linux-blockLinus Torvalds2011-06-043-8/+27
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * 'for-linus' of git://git.kernel.dk/linux-block: block: Use hlist_entry() for io_context.cic_list.first cfq-iosched: Remove bogus check in queue_fail path xen/blkback: potential null dereference in error handling xen/blkback: don't call vbd_size() if bd_disk is NULL block: blkdev_get() should access ->bd_disk only after success CFQ: Fix typo and remove unnecessary semicolon block: remove unwanted semicolons Revert "block: Remove extra discard_alignment from hd_struct." nbd: adjust 'max_part' according to part_shift nbd: limit module parameters to a sane value nbd: pass MSG_* flags to kernel_recvmsg() block: improve the bio_add_page() and bio_add_pc_page() descriptions
| | * | | | xen/blkback: potential null dereference in error handlingDan Carpenter2011-06-011-4/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | blkbk->pending_pages can be NULL here so I added a check for it. Signed-off-by: Dan Carpenter <error27@gmail.com> [v1: Redid the loop a bit] Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * | | | xen/blkback: don't call vbd_size() if bd_disk is NULLLaszlo Ersek2011-06-011-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | ...because vbd_size() dereferences bd_disk if bd_part is NULL. Signed-off-by: Laszlo Ersek<lersek@redhat.com> Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
| | * | | | nbd: adjust 'max_part' according to part_shiftNamhyung Kim2011-05-281-1/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'max_part' parameter determines how many partitions are supported on each nbd device. However the actual number can be changed to the power of 2 minus 1 form during the module initialization as alloc_disk() is called with (1 << part_shift) for some reason. So adjust 'max_part' also at least for consistency with loop and brd. It is exported via sysfs already, and a user should check this value after module loading if [s]he wants to use that number correctly (i.e. fdisk or something). Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Laurent Vivier <Laurent.Vivier@bull.net> Cc: Paul Clements <Paul.Clements@steeleye.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| | * | | | nbd: limit module parameters to a sane valueNamhyung Kim2011-05-281-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'max_part' parameter controls the number of maximum partition a nbd device can have. However if a user specifies very large value it would exceed the limitation of device minor number and can cause a kernel oops (or, at least, produce invalid device nodes in some cases). In addition, specifying large 'nbds_max' value causes same problem for the same reason. On my desktop, following command results to the kernel bug: $ sudo modprobe nbd max_part=100000 kernel BUG at /media/Linux_Data/project/linux/fs/sysfs/group.c:65! invalid opcode: 0000 [#1] SMP last sysfs file: /sys/devices/virtual/block/nbd4/range CPU 1 Modules linked in: nbd(+) bridge stp llc kvm_intel kvm asus_atk0110 sg sr_mod cdrom Pid: 2522, comm: modprobe Tainted: G W 2.6.39-leonard+ #159 System manufacturer System Product Name/P5G41TD-M PRO RIP: 0010:[<ffffffff8115aa08>] [<ffffffff8115aa08>] internal_create_group+0x2f/0x166 RSP: 0018:ffff8801009f1de8 EFLAGS: 00010246 RAX: 00000000ffffffef RBX: ffff880103920478 RCX: 00000000000a7bd3 RDX: ffffffff81a2dbe0 RSI: 0000000000000000 RDI: ffff880103920478 RBP: ffff8801009f1e38 R08: ffff880103920468 R09: ffff880103920478 R10: ffff8801009f1de8 R11: ffff88011eccbb68 R12: ffffffff81a2dbe0 R13: ffff880103920468 R14: 0000000000000000 R15: ffff880103920400 FS: 00007f3c49de9700(0000) GS:ffff88011f800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b CR2: 00007f3b7fe7c000 CR3: 00000000cd58d000 CR4: 00000000000406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400 Process modprobe (pid: 2522, threadinfo ffff8801009f0000, task ffff8801009a93a0) Stack: ffff8801009f1e58 ffffffff812e8f6e ffff8801009f1e58 ffffffff812e7a80 ffff880000000010 ffff880103920400 ffff8801002fd0c0 ffff880103920468 0000000000000011 ffff880103920400 ffff8801009f1e48 ffffffff8115ab6a Call Trace: [<ffffffff812e8f6e>] ? device_add+0x4f1/0x5e4 [<ffffffff812e7a80>] ? dev_set_name+0x41/0x43 [<ffffffff8115ab6a>] sysfs_create_group+0x13/0x15 [<ffffffff810b857e>] blk_trace_init_sysfs+0x14/0x16 [<ffffffff811ee58b>] blk_register_queue+0x4c/0xfd [<ffffffff811f3bdf>] add_disk+0xe4/0x29c [<ffffffffa007e2ab>] nbd_init+0x2ab/0x30d [nbd] [<ffffffffa007e000>] ? 0xffffffffa007dfff [<ffffffff8100020f>] do_one_initcall+0x7f/0x13e [<ffffffff8107ab0a>] sys_init_module+0xa1/0x1e3 [<ffffffff814f3542>] system_call_fastpath+0x16/0x1b Code: 41 57 41 56 41 55 41 54 53 48 83 ec 28 0f 1f 44 00 00 48 89 fb 41 89 f6 49 89 d4 48 85 ff 74 0b 85 f6 75 0b 48 83 7f 30 00 75 14 <0f> 0b eb fe b9 ea ff ff ff 48 83 7f 30 00 0f 84 09 01 00 00 49 RIP [<ffffffff8115aa08>] internal_create_group+0x2f/0x166 RSP <ffff8801009f1de8> ---[ end trace 753285ffbf72c57c ]--- Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Laurent Vivier <Laurent.Vivier@bull.net> Cc: Paul Clements <Paul.Clements@steeleye.com> Cc: stable@kernel.org Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| | * | | | nbd: pass MSG_* flags to kernel_recvmsg()Namhyung Kim2011-05-281-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike kernel_sendmsg(), kernel_recvmsg() requires passing flags explicitly via last parameter instead of struct msghdr.msg_flags. Therefore calls to sock_xmit(lo, 0, ..., MSG_WAITALL) have not been processed properly by tcp layer wrt. the flag. Fix it. Signed-off-by: Namhyung Kim <namhyung@gmail.com> Cc: Paul Clements <Paul.Clements@steeleye.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * | | | | Merge branch 'sh-fixes-for-linus' of ↵Linus Torvalds2011-06-043-22/+11Star
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: dmaengine: shdma: fix a regression: initialise DMA channels for memcpy dmaengine: shdma: Fix up fallout from runtime PM changes. Revert "clocksource: sh_cmt: Runtime PM support" Revert "clocksource: sh_tmu: Runtime PM support" sh: Fix up asm-generic/ptrace.h fallout. sh64: Move from P1SEG to CAC_ADDR for consistent sync. sh64: asm/pgtable.h needs asm/mmu.h sh: asm/tlb.h needs linux/swap.h sh: mark DMA slave ID 0 as invalid sh: Update shmin to reflect PIO dependency. sh: arch/sh/kernel/process_32.c needs linux/prefetch.h. sh: add MMCIF runtime PM support on ecovec sh: switch ap325rxa to dynamically manage the platform camera
| | * | | | | dmaengine: shdma: fix a regression: initialise DMA channels for memcpyGuennadi Liakhovetski2011-06-021-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | A recent patch has introduced a regression, where repeating a memcpy DMA test with shdma module unloading between them skips the DMA channel configuration. Fix this regression by always configuring the channel during its allocation. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | | | dmaengine: shdma: Fix up fallout from runtime PM changes.Paul Mundt2011-05-311-1/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The runtime PM changes introduce sh_dmae_rst() wrapping via the runtime_resume helper, depending on dev_get_drvdata() to fetch the platform data needed for the DMAOR initialization default at a time where drvdata hasn't yet been established by the probe path, resulting in general probe misery: Unable to handle kernel NULL pointer dereference at virtual address 000000c4 pc = 8025adee *pde = 00000000 Oops: 0000 [#1] Modules linked in: Pid : 1, Comm: swapper CPU : 0 Not tainted (3.0.0-rc1-00012-g9436b4a-dirty #1456) PC is at sh_dmae_rst+0x28/0x86 PR is at sh_dmae_rst+0x22/0x86 PC : 8025adee SP : 9e803d10 SR : 400080f1 TEA : 000000c4 R0 : 000000c4 R1 : 0000fff8 R2 : 00000000 R3 : 00000040 R4 : 000000f0 R5 : 00000000 R6 : 00000000 R7 : 804f184c R8 : 00000000 R9 : 804dd0e8 R10 : 80283204 R11 : ffffffda R12 : 000000a0 R13 : 804dd18c R14 : 9e803d10 MACH: 00000000 MACL: 00008f20 GBR : 00000000 PR : 8025ade8 Call trace: [<8025ae70>] sh_dmae_runtime_resume+0x24/0x34 [<80283238>] pm_generic_runtime_resume+0x34/0x3c [<80283370>] rpm_callback+0x4a/0x7e [<80283efc>] rpm_resume+0x240/0x384 [<80283f54>] rpm_resume+0x298/0x384 [<8028428c>] __pm_runtime_resume+0x44/0x7c [<8038a358>] __ioremap_caller+0x0/0xec [<80284296>] __pm_runtime_resume+0x4e/0x7c [<8038a358>] __ioremap_caller+0x0/0xec [<80666254>] sh_dmae_probe+0x180/0x6a0 [<802803ae>] platform_drv_probe+0x26/0x2e Fix up the ordering accordingly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | | | Revert "clocksource: sh_cmt: Runtime PM support"Paul Mundt2011-05-311-10/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 01fa68b58492a5d6708a91c1f474b6a099a9509e. The same note as per the sh_tmu change applies here, too. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * | | | | Revert "clocksource: sh_tmu: Runtime PM support"Paul Mundt2011-05-311-10/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit 1b842e91fea9447eff5eb687e28ad61c02f5033e. There is a fundamental ordering race between the early and late probe paths and the runtime PM tie-in that results in __pm_runtime_resume() attempting to take a lock that hasn't been initialized yet (which by proxy also suggests that pm_runtime_init() hasn't yet been run on the device either, making the entire thing unsafe) -- resulting in instant death on SMP or on UP with spinlock debugging enabled: sh_tmu.0: used for clock events sh_tmu.0: used for periodic clock events BUG: spinlock trylock failure on UP on CPU#0, swapper/0 lock: 804db198, .magic: 00000000, .owner: <none>/-1, .owner_cpu: 0 ... Revert it for now until the ordering issues can be resolved, or we can get some more help from the runtime PM framework to make this possible. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | | | | Revert "tty: make receive_buf() return the amout of bytes received"Linus Torvalds2011-06-0319-123/+111Star
| | |_|_|_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reverts commit b1c43f82c5aa265442f82dba31ce985ebb7aa71c. It was broken in so many ways, and results in random odd pty issues. It re-introduced the buggy schedule_work() in flush_to_ldisc() that can cause endless work-loops (see commit a5660b41af6a: "tty: fix endless work loop when the buffer fills up"). It also used an "unsigned int" return value fo the ->receive_buf() function, but then made multiple functions return a negative error code, and didn't actually check for the error in the caller. And it didn't actually work at all. BenH bisected down odd tty behavior to it: "It looks like the patch is causing some major malfunctions of the X server for me, possibly related to PTYs. For example, cat'ing a large file in a gnome terminal hangs the kernel for -minutes- in a loop of what looks like flush_to_ldisc/workqueue code, (some ftrace data in the quoted bits further down). ... Some more data: It -looks- like what happens is that the flush_to_ldisc work queue entry constantly re-queues itself (because the PTY is full ?) and the workqueue thread will basically loop forver calling it without ever scheduling, thus starving the consumer process that could have emptied the PTY." which is pretty much exactly the problem we fixed in a5660b41af6a. Milton Miller pointed out the 'unsigned int' issue. Reported-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Reported-by: Milton Miller <miltonm@bga.com> Cc: Stefan Bigler <stefan.bigler@keymile.com> Cc: Toby Gray <toby.gray@realvnc.com> Cc: Felipe Balbi <balbi@ti.com> Cc: Greg Kroah-Hartman <gregkh@suse.de> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | | Merge git://git.infradead.org/iommu-2.6Linus Torvalds2011-06-013-47/+212
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.infradead.org/iommu-2.6: intel-iommu: Fix off-by-one in RMRR setup intel-iommu: Add domain check in domain_remove_one_dev_info intel-iommu: Remove Host Bridge devices from identity mapping intel-iommu: Use coherent DMA mask when requested intel-iommu: Dont cache iova above 32bit intel-iommu: Speed up processing of the identity_mapping function intel-iommu: Check for identity mapping candidate using system dma mask intel-iommu: Only unlink device domains from iommu intel-iommu: Enable super page (2MiB, 1GiB, etc.) support intel-iommu: Flush unmaps at domain_exit intel-iommu: Remove obsolete comment from detect_intel_iommu intel-iommu: fix VT-d PMR disable for TXT on S3 resume
| | * | | | | intel-iommu: Fix off-by-one in RMRR setupDavid Woodhouse2011-06-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We were mapping an extra byte (and hence usually an extra page): iommu_prepare_identity_map() expects to be given an 'end' argument which is the last byte to be mapped; not the first byte *not* to be mapped. Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Add domain check in domain_remove_one_dev_infoMike Habeck2011-06-011-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The comment in domain_remove_one_dev_info() states "No need to compare PCI domain; it has to be the same". But for the si_domain that isn't going to be true, as it consists of all the PCI devices that are identity mapped thus multiple PCI domains can be in si_domain. The code needs to validate the PCI domain too. Signed-off-by: Mike Habeck <habeck@sgi.com> Signed-off-by: Mike Travis <travis@sgi.com> Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Remove Host Bridge devices from identity mappingMike Travis2011-06-011-0/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When using the 1:1 (identity) PCI DMA remapping, PCI Host Bridge devices that do not use the IOMMU causes a kernel panic. Fix that by not inserting those devices into the si_domain. Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Mike Habeck <habeck@sgi.com> Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Use coherent DMA mask when requestedMike Travis2011-06-011-2/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The __intel_map_single function is not honoring the passed in DMA mask. This results in not using the coherent DMA mask when called from intel_alloc_coherent(). Signed-off-by: Mike Travis <travis@sgi.com> Acked-by: Chris Wright <chrisw@sous-sol.org> Reviewed-by: Mike Habeck <habeck@sgi.com> Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Dont cache iova above 32bitChris Wright2011-06-011-2/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Mike Travis and Mike Habeck reported an issue where iova allocation would return a range that was larger than a device's dma mask. https://lkml.org/lkml/2011/3/29/423 The dmar initialization code will reserve all PCI MMIO regions and copy those reservations into a domain specific iova tree. It is possible for one of those regions to be above the dma mask of a device. It is typical to allocate iovas with a 32bit mask (despite device's dma mask possibly being larger) and cache the result until it exhausts the lower 32bit address space. Freeing the iova range that is >= the last iova in the lower 32bit range when there is still an iova above the 32bit range will corrupt the cached iova by pointing it to a region that is above 32bit. If that region is also larger than the device's dma mask, a subsequent allocation will return an unusable iova and cause dma failure. Simply don't cache an iova that is above the 32bit caching boundary. Reported-by: Mike Travis <travis@sgi.com> Reported-by: Mike Habeck <habeck@sgi.com> Cc: stable@kernel.org Acked-by: Mike Travis <travis@sgi.com> Tested-by: Mike Habeck <habeck@sgi.com> Signed-off-by: Chris Wright <chrisw@sous-sol.org> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Speed up processing of the identity_mapping functionMike Travis2011-06-011-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When there are a large count of PCI devices, and the pass through option for iommu is set, much time is spent in the identity_mapping function hunting though the iommu domains to check if a specific device is "identity mapped". Speed up the function by checking the cached info to see if it's mapped to the static identity domain. Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Mike Habeck <habeck@sgi.com> Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Check for identity mapping candidate using system dma maskChris Wright2011-06-011-2/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The identity mapping code appears to make the assumption that if the devices dma_mask is greater than 32bits the device can use identity mapping. But that is not true: take the case where we have a 40bit device in a 44bit architecture. The device can potentially receive a physical address that it will truncate and cause incorrect addresses to be used. Instead check to see if the device's dma_mask is large enough to address the system's dma_mask. Signed-off-by: Mike Travis <travis@sgi.com> Reviewed-by: Mike Habeck <habeck@sgi.com> Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Only unlink device domains from iommuAlex Williamson2011-06-011-4/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a97590e5 added unlinking domains from iommus to reciprocate the iommu from domains unlinking that was already done. We actually want to only do this for device domains and never for the static identity map domain or VM domains. The SI domain is special and never freed, while VM domain->id lives in their own special address space, separate from iommu->domain_ids. In the current code, a VM can get domain->id zero, then mark that domain unused when unbound from pci-stub. This leads to DMAR write faults when the device is re-bound to the host driver. Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Cc: stable@kernel.org Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Enable super page (2MiB, 1GiB, etc.) supportYouquan Song2011-06-011-18/+139
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There are no externally-visible changes with this. In the loop in the internal __domain_mapping() function, we simply detect if we are mapping: - size >= 2MiB, and - virtual address aligned to 2MiB, and - physical address aligned to 2MiB, and - on hardware that supports superpages. (and likewise for larger superpages). We automatically use a superpage for such mappings. We never have to worry about *breaking* superpages, since we trust that we will always *unmap* the same range that was mapped. So all we need to do is ensure that dma_pte_clear_range() will also cope with superpages. Adjust pfn_to_dma_pte() to take a superpage 'level' as an argument, so it can return a PTE at the appropriate level rather than always extending the page tables all the way down to level 1. Again, this is simplified by the fact that we should never encounter existing small pages when we're creating a mapping; any old mapping that used the same virtual range will have been entirely removed and its obsolete page tables freed. Provide an 'intel_iommu=sp_off' argument on the command line as a chicken bit. Not that it should ever be required. == The original commit seen in the iommu-2.6.git was Youquan's implementation (and completion) of my own half-baked code which I'd typed into an email. Followed by half a dozen subsequent 'fixes'. I've taken the unusual step of rewriting history and collapsing the original commits in order to keep the main history simpler, and make life easier for the people who are going to have to backport this to older kernels. And also so I can give it a more coherent commit comment which (hopefully) gives a better explanation of what's going on. The original sequence of commits leading to identical code was: Youquan Song (3): intel-iommu: super page support intel-iommu: Fix superpage alignment calculation error intel-iommu: Fix superpage level calculation error in dma_pfn_level_pte() David Woodhouse (4): intel-iommu: Precalculate superpage support for dmar_domain intel-iommu: Fix hardware_largepage_caps() intel-iommu: Fix inappropriate use of superpages in __domain_mapping() intel-iommu: Fix phys_pfn in __domain_mapping for sglist pages Signed-off-by: Youquan Song <youquan.song@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: Flush unmaps at domain_exitAlex Williamson2011-05-241-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We typically batch unmaps to be lazily flushed out at regular intervals. When we destroy a domain, we need to force a flush of these lazy unmaps to be sure none reference the domain we're about to free. Fixes: https://bugzilla.kernel.org/show_bug.cgi?id=35062 Signed-off-by: Alex Williamson <alex.williamson@redhat.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com> Cc: stable@kernel.org
| | * | | | | intel-iommu: Remove obsolete comment from detect_intel_iommuJan Kiszka2011-05-241-6/+1Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Since cacd4213d8, this comment no longer applies. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
| | * | | | | intel-iommu: fix VT-d PMR disable for TXT on S3 resumeJoseph Cihula2011-05-241-6/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is a follow on to https://lkml.org/lkml/2011/3/21/239, which was merged as commit 51a63e67da6056c13b5b597dcc9e1b3bd7ceaa55. This patch adds support for S3, as pointed out by Chris Wright. Signed-off-by: Joseph Cihula <joseph.cihula@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>