The formula would yield -1 if the path is faster than the link, which
is wrong in a bad way (max throttling).  Clamp to 0, which is the
correct value.
Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

If a port goes down, ipoib_ib_dev_down() is invoked -- which flushes
the mcasts (clearing priv->broadcast) and clearing the path record
cache.  If ipoib_start_xmit() is then invoked (before the broadcast
group is rejoined), a kernel oops results from attempting to access
priv->broadcast, which is still unset.

Returning NULL from path_rec_create() if priv->broadcast is NULL is a
harmless way of bypassing the problem -- the offending packet is
simply discarded "without prejudice."
Signed-off-by: Jack Morgenstein <jackm@dev.mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>

* git://git.kernel.org/pub/scm/linux/kernel/git/bart/ide-2.6:
  ide-scsi: use print_hex_dump from <linux/kernel.h>
  ide: More TSST drives with broken cable detection
  ali14xx: constify __initdata
  ide: remove bogus ide_fix_driveid() comment
  trm290: remove bogus init_hwif_trm290() comment
  piix: add HP compaq laptop to short cable list
  alim15x3: add Mitac 8317 and derivatives to ali_cable_override()
  ide: add TORiSAN model: CD-ROM CDR_U200 fw: 1.09 to DMA blacklist
  amd74xx: arm hack
  drivers/ide: Add missing "space"
  ide-cris: don't override ide_register_hw() result
  ide: move CONFIG_IDE_ETRAX to drivers/ide/Kconfig
  ide: add CONFIG_IDE_H8300 config option
  ide/Kconfig: fix mpc8xx host driver dependencies
  macide/q40ide: add missing __init tag to {macide,q40ide}_init()
  aec62xx: Fix kernel oops in driver's probe function
  ide: skip ide_wait_not_busy() on noprobe-disks
  siimage: remove resetproc() method
  ide: don't set PIO mode on pre-EIDE drives
  sis5513.c: Add Packard Bell EasyNote K5305 to laptops

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/avi/kvm:
  KVM: SVM: Fix FPU leak while emulating clts
  KVM: SVM: Unload guest fpu on vcpu_put()
  KVM: x86 emulator: Use emulator_write_emulated and not emulator_write_std
  KVM: x86 emulator: fix the saving of of the eip value
  KVM: x86 emulator: fix JMP_REL

* 'for-linus' of git://git.kernel.dk/linux-2.6-block:
  scatterlist: add more safeguards
  Revert "ll_rw_blk: temporarily enable max_segments tweaking"
  mmc: Add missing sg_init_table() call
  block: Fix memory leak in alloc_disk_node()
  alpha: fix sg_page breakage
  blktrace: Make sure BLKTRACETEARDOWN does the full cleanup.

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/roland/infiniband:
  IB/iser: Add missing counter increment in iser_data_buf_aligned_len()
  IB/ehca: Fix static rate regression
  mlx4_core: Fix state check in mlx4_qp_modify()
  IB/ipath: Normalize error return codes for posting work requests
  IB/ipath: Fix offset returned to ibv_modify_srq()
  IB/ipath: Fix error path in QP creation
  IB/ipath: Fix offset returned to ibv_resize_cq()

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input:
  Input: adds the context menu key (HUT GenDesc 0x84)
  Input: add definitions for frame forward and frame back keys
  Input: bf54x-keys - keypad does not exist on BF544 parts
  Input: gpio-keys - request and configure GPIOs
  Input: i8042 - add i8042.noloop quirk for MS Virtual Machine
  Sonypi: use synchronize_irq instead of sycnronize_sched
  sonypi: fit input devices into sysfs tree
  sony-laptop: fit input devices into sysfs tree

these utilities implemented in lib/hexdump.c are more handy, please use this.

Bart:
- s/KERN_DEBUG/KERN_CONT/ as pointed out by Randy
- s/DUMP_PREFIX_OFFSET/DUMP_PREFIX_NONE/
- don't include ASCII dump
- respect 80-columns limit
Signed-off-by: Denis Cheng <crquan@gmail.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add more TSST (Toshiba/Samsung) drives to the
'broken cable detection' blacklist.

Signed-off-by: Peter Missel (peter.missel@onlinehome.de)
Cc: Alan Cox <alan@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Port of Jeff's libata commit 54174db3
("[libata] ata_piix: add HP compaq laptop to short cable list").

Cc: Jeff Garzik <jeff@garzik.org>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Port of Alan's patch for pata_ali.c.

Cc: Alan Cox <alan@redhat.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Based on the report from snowbat@gmail.com.

Fixes kernel bugzilla bug #9195.

Tested-by: snowbat@gmail.com
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

drivers/ide/pci/amd74xx.c: In function `init_hwif_amd74xx':
drivers/ide/pci/amd74xx.c:387: error: implicit declaration of function `pci_get_legacy_ide_irq'

Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Don't override ide_register_hw() result and check if there is a hwif
  available to use.

* MAX_HWIFS is user configurable nowadays so replace it by hard-coded value.

* Remove the comment about ide_hwifs[].
Acked-by: Mikael Starvik <starvik@axis.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Move ETRAX_IDE and friends from arch/cris/arch-{v10,v32}/drivers/Kconfig
  to drivers/ide/Kconfig.

* Don't force selecting ide-disk and ide-cd device drivers
  (please handle this through defconfig if necessary).

* Make ETRAX_IDE depend on BROKEN for the time being
  (it doesn't even compile currently).

Cc: Mikael Starvik <starvik@axis.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add a separate config option for ide-8300 host driver instead of depending
on CONFIG_H8300.

This change is a preparation for the future changes and also allows ide-h8300
to be disabled if needed.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Only LWMON, IVMS8, IVML24 and TQM8xxL platforms have the needed
defines (IDE0_BASE_OFFSET and friends) in the platform header file.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Add pci_enable_device() to aec62xx probe function
before doing any I/O.

Original probe function tries to read from device's
PCI region 4 before calling ide_setup_pci_device().
Since the device is not enabled at this point,
on machines that have no firmware PCI initialization
(e.g. ASUS WL-700gE router), corresponding PCI BAR 
is 0 and the following inb() causes a kernel oops.
Signed-off-by: Aleksandar Radovanovic <biblbroks@sezampro.yu>
Cc: Linus Torvalds <torvalds@linux-foundation.org>,
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

There is a problem in some hardware where the kernel will stall for
35 seconds waiting for disks that don't exist. This patch will skip
waiting for the BSY-bit on IDE drives to go away if you set "hdx=noprobe"
as a kernel option and the disk is not marked as 'present' (like when
you set the geometry by hand).

If no noprobe-option is set the code will work (more or less) as the
original but if set the code will skip the ide_wait_not_busy() for
that drive. Even if there would be a drive there and it is still busy
afterwards it should not matter since it isn't probed for later.

The code also honors the MAX_DRIVES variable instead of assuming that
there will be two harddrives on the bus.

Bart: minor cleanups
Signed-off-by: Jonas Stare <jonas.stare@purplescout.se>
CC: Andrew Morton <akpm@linux-foundation.org>,
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

The intent behind siimage_reset() was probably to hard reset the interface and
the SATA PHY but as the code writes to two reserved bits instead, it obviously
has been ineffective from the start. So, just remove it.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Fix handling of the PIO modes for the pre-EIDE drives that did not support
the PIO Flow Control Transfer Mode value (00001 nnn) of the Set Transfer Mode
feature by skipping the actual mode programming.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

With newer kernels HDD in my old laptop is limited to UDMA 33.
With this patch I get UDMA 100 again.
Signed-off-by: Gabriel Craciunescu <nix.or.die@googlemail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

The clts code didn't use set_cr0 properly, so our lazy FPU
processing wasn't being done by the clts instruction at all.

(this isn't called on Intel as the hardware does the decode for us)
Signed-off-by: Amit Shah <amit.shah@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

Not unloading the guest fpu can cause fpu leaks from guest to guest (or host
to guest).
Signed-off-by: Avi Kivity <avi@qumranet.com>

emulator_write_std() is not implemented, and calling write_emulated should
work just as well in place of write_std.

Fixes emulator failures with the push r/m instruction.
Signed-off-by: Amit Shah <amit.shah@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

this make sure that no matter what is the operand size,
all the value of the eip will be saved
Signed-off-by: Izik Eidus <izike@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

Change JMP_REL to call to register_address_increment(): the operands size
should not effect the calculation of the eip, instead the ad_bytes should
affect it.
Signed-off-by: Izik Eidus <izike@qumranet.com>
Signed-off-by: Avi Kivity <avi@qumranet.com>

Add more safeguards to protect against misinterpreting a chain entry
as a normal scatterlist and vice-versa.

* Make sure the entry isn't a chain when assigning and reading a
  normal sg.

* Clear offset and length when chaining.
Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

This was a temporary debugging thing for sg chaining testing, revert
it now as it has served its purpose.

This reverts commit 563063a8.
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

mmc_init_queue only initializes the scatterlists with sg_init_table()
when using a bounce buffer. This leads to a BUG() when CONFIG_DEBUG_SG
is set.
Signed-off-by: Haavard Skinnemoen <hskinnemoen@atmel.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

Fix a memory leak in alloc_disk_node(). Don't forget to free 'dkstats' when the allocation of 'part' failed.
Signed-off-by: Jerome Marchand <jmarchan@redhat.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

if blktrace program segfault it will not be able
to call BLKTRACETEARDOWN. Now if we run the blktrace
again that would result in a failure to create the
block/<device> debugfs directory.This will result
in blk_remove_root() to be called which will set
blk_tree_root to NULL. But the  debugfs block dir
still exist because it contain subdirectory.

Now if we try to fix it using BLKTRACETEARDOWN
it won't work because blk_tree_root is NULL.

Fix the same.

Tested as below

root@qemu-image:/home/kvaneesh/blktrace# ./blktrace  -d /dev/hdc
Segmentation fault
root@qemu-image:/home/kvaneesh/blktrace# ./blktrace  -d /dev/hdc
BLKTRACESETUP: No such file or directory
Failed to start trace on /dev/hdc
root@qemu-image:/home/kvaneesh/blktrace# ./blktrace  -k /dev/hdc
root@qemu-image:/home/kvaneesh/blktrace# ./blktrace  -d /dev/hdc
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>

Signed-off-by: Aristeu Rozanski <aris@ruivo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>

Signed-off-by: Aristeu Rozanski <aris@ruivo.org>
Signed-off-by: Dmitry Torokhov <dtor@mail.ru>