Commit Graph

3570 Commits

Author SHA1 Message Date
James Smart
98c9ea5c02 [SCSI] lpfc 8.2.3 : Miscellaneous Small Fixes - part 1
Miscellaneous Small Fixes - part 1
- Fix typo kmzlloc -> kzalloc
- Fix discovery ndlp use after free panic
- Fix link event causing flood of 0108 messages
- Relieve some mbox congestion on link up with 100 vports
- Fix broken vport parameters
- Prevent lock recursion in logo_reglogin_issue
- Split uses of error variable in lpfc_pci_probe_one into retval and error
- Remove completion code related to dev_loss_tmo
- Remove unused LPFC_MAX_HBQ #define
- Don't compare pointers to 0 for sparse
- Make 2 functions static for sparse
- Fix default rpi cleanup code causing rogue ndlps to remain on the NPR list
- Remove annoying ELS messages when driver is unloaded
- Fix Cannot issue Register Fabric login problems on link up
- Remove LPFC_EVT_DEV_LOSS_DELAY
- Fix FC port swap test leads to device going offline
- Fix vport CT flags to only be set when accepted
- Add code to handle signals during vport_create
- Fix too many retries in FC-AL mode
- Pull lpfc_port_link_failure out of lpfc_linkdown_port

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:33 -06:00
James Smart
0b727fea7a [SCSI] lpfc 8.2.3 : Remove flawed MBX_STOP_IOCB logic
Remove flawed MBX_STOP_IOCB logic

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:32 -06:00
James Smart
7ee5d43e2e [SCSI] lpfc 8.2.3 : NPIV bug fixes
NPIV bug fixes:
- Remove vport params on physical hba when npiv is disabled
- Implement new DA_ID CT command to remove vport information from
  the switch after delete. Some switches didn't clean this up unless
  the physical link dropped.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:31 -06:00
James Smart
57127f1572 [SCSI] lpfc 8.2.3 : Added support for ASICs that report temperature
Added support for ASICs that report temperature. Temperature notices are
 reported as events and logged. Temperature can be read via sysfs.

Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:31 -06:00
Brian King
d1a357fcc8 [SCSI] ibmvscsi: Set default command timeout
Set the default command timeout for ibmvscsi disks to 60 seconds
to ensure we don't prematurely timeout commands. This fixes a problem
seen where the default 30 seconds was not long enough due to
congestion on the server.

Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:31 -06:00
Adrian Bunk
f37a7238d3 [SCSI] 53c7xx: fix removal fallout
This patch does some additional cleanups after the 53c7xx removal.

Signed-off-by: Adrian Bunk <bunk@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:30 -06:00
FUJITA Tomonori
f10ab66fa5 [SCSI] tgt: convert to use the data buffer accessors
- convert to use the new accessors for the sg lists and the
parameters.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:30 -06:00
Gilbert Wu
1237c98db2 [SCSI] aic94xx: update BIOS image from user space.
1. Create a file "update_bios" in sysfs to allow user to update bios
    from user space.

 2. The BIOS image file can be downloaded from web site

"http://www.adaptec.com/en-US/downloads/bios_fw/bios_fw_ver?productId=SAS-48300&dn=Adaptec+Serial+Attached+SCSI+48300"
    and copy the BIOS image into /lib/firmware folder.

 3. The aic994xx will accept "update bios_file" and "verify bios_file"
    commands to perform update and verify BIOS image .

    For example:

     Type "echo "update asc483c01.ufi" > /sys/devices/.../update_bios"
          to update BIOS image from /lib/firmware/as483c01.ufi file into
          HBA's flash memory.

     Type "echo "verify asc483c01.ufi" > /sys/devices/.../update_bios"
          to verify BIOS image between /lib/firmware/asc48c01.ufi file
and
          HBA's flash memory.

 4. Type "cat  /sys/devices/.../update_bios" to view the status or
result
    of updating BIOS.

Signed-off-by: Gilbert Wu <gilbert_wu@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:30 -06:00
Kay Sievers
285e9670d9 [SCSI] sr,sd: send media state change modification events
This will send for a card reader slot (remove/add media):
  UEVENT[1187091572.155884] change   /devices/pci0000:00/0000:00:1d.7/usb5/5-2/5-2:1.0/host7/target7:0:0/7:0:0:0 (scsi)
  UEVENT[1187091572.162314] remove   /block/sdb/sdb1 (block)
  UEVENT[1187091572.172464] add      /block/sdb/sdb1 (block)
  UEVENT[1187091572.175408] change   /devices/pci0000:00/0000:00:1d.7/usb5/5-2/5-2:1.0/host7/target7:0:0/7:0:0:0 (scsi)

and for a DVD drive (add/eject media):
  UEVENT[1187091590.189159] change   /devices/pci0000:00/0000:00:1f.1/host4/target4:0:0/4:0:0:0 (scsi)
  UEVENT[1187091590.957124] add      /module/isofs (module)
  UEVENT[1187091604.468207] change   /devices/pci0000:00/0000:00:1f.1/host4/target4:0:0/4:0:0:0 (scsi)

Userspace gets events, even for unpartitioned media. This unifies
the event handling for asynchronoous events (AN) and events caused by
perodical polling the device from userspace.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>

[jejb: modified for new event API]

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-11 18:22:30 -06:00
FUJITA Tomonori
3a43e69ce5 [SCSI] qla1280: fix 32 bit segment code
There's an error remaining in the 32 bit descriptor code after the
conversion to dma accessors:  req_cnt is left uninitialised.

qla1280_32bit_start_scsi gives the following warnings:

drivers/scsi/qla1280.c: In function 'qla1280_32bit_start_scsi':
drivers/scsi/qla1280.c:3044: warning: unused variable 'dma_handle'
drivers/scsi/qla1280.c: In function 'qla1280_queuecommand':
drivers/scsi/qla1280.c:3060: warning: 'req_cnt' is used uninitialized in this function
drivers/scsi/qla1280.c:3042: note: 'req_cnt' was declared here

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-09 15:06:07 -06:00
Linus Torvalds
7b3d9545f9 Revert "scsi: revert "[SCSI] Get rid of scsi_cmnd->done""
This reverts commit ac40532ef0, which gets
us back the original cleanup of 6f5391c283.

It turns out that the bug that was triggered by that commit was
apparently not actually triggered by that commit at all, and just the
testing conditions had changed enough to make it appear to be due to it.

The real problem seems to have been found by Peter Osterlund:

  "pktcdvd sets it [block device size] when opening the /dev/pktcdvd
   device, but when the drive is later opened as /dev/scd0, there is
   nothing that sets it back.  (Btw, 40944 is possible if the disk is a
   CDRW that was formatted with "cdrwtool -m 10236".)

   The problem is that pktcdvd opens the cd device in non-blocking mode
   when pktsetup is run, and doesn't close it again until pktsetup -d is
   run.  The effect is that if you meanwhile open the cd device,
   blkdev.c:do_open() doesn't call bd_set_size() because
   bdev->bd_openers is non-zero."

In particular, to repeat the bug (regardless of whether commit
6f5391c283 is applied or not):

  " 1. Start with an empty drive.
    2. pktsetup 0 /dev/scd0
    3. Insert a CD containing an isofs filesystem.
    4. mount /dev/pktcdvd/0 /mnt/tmp
    5. umount /mnt/tmp
    6. Press the eject button.
    7. Insert a DVD containing a non-writable filesystem.
    8. mount /dev/scd0 /mnt/tmp
    9. find /mnt/tmp -type f -print0 | xargs -0 sha1sum >/dev/null
    10. If the DVD contains data beyond the physical size of a CD, you
        get I/O errors in the terminal, and dmesg reports lots of
        "attempt to access beyond end of device" errors."

which in turn is because the nested open after the media change won't
cause the size to be set properly (because the original open still holds
the block device, and we only do the bd_set_size() when we don't have
other people holding the device open).

The proper fix for that is probably to just do something like

	bdev->bd_inode->i_size = (loff_t)get_capacity(disk)<<9;

in fs/block_dev.c:do_open() even for the cases where we're not the
original opener (but *not* call bd_set_size(), since that will also
change the block size of the device).

Cc: Peter Osterlund <petero2@telia.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Matthew Wilcox <matthew@wil.cx>
Cc: Ingo Molnar <mingo@elte.hu>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-06 10:17:12 -08:00
Dave Dillow
911833440b [SCSI] SRP transport: only remove our own entries
The SCSI SRP transport class currently iterates over all children
devices of the host that is being removed in srp_remove_host(). However,
not all of those children were created by the SRP transport, and
removing them will cause corruption and an oops when their creator tries
to remove them.

Signed-off-by: David Dillow <dillowda@ornl.gov>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-04 14:15:51 -06:00
Linus Torvalds
3a62b5f3cd Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] scsi_sysfs: restore prep_fn when ULD is removed
2008-01-03 11:59:27 -08:00
Ingo Molnar
ac40532ef0 scsi: revert "[SCSI] Get rid of scsi_cmnd->done"
This reverts commit 6f5391c283 ("[SCSI]
Get rid of scsi_cmnd->done") that was supposed to be a cleanup commit,
but apparently it causes regressions:

  Bug 9370 - v2.6.24-rc2-409-g9418d5d: attempt to access beyond end of device
  http://bugzilla.kernel.org/show_bug.cgi?id=9370

this patch should be reintroduced in a more split-up form to make
testing of it easier.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Matthew Wilcox <matthew@wil.cx>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-01-02 13:11:06 -08:00
James Bottomley
751bf4d786 [SCSI] scsi_sysfs: restore prep_fn when ULD is removed
A recent bug report:

http://bugzilla.kernel.org/show_bug.cgi?id=9674

Was caused because the ULDs now set their own prep functions, but
don't necessarily reset the prep function back to the SCSI default
when they are removed.  This leads to panics if commands are sent to
the device after the module is removed because the prep_fn is still
pointing to the old module code.  The fix for this is to implement a
bus remove method that resets the prep_fn pointer correctly before
calling the ULD specific driver remove method.

Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-01-02 13:08:00 -06:00
Linus Torvalds
c7eeae734f Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] initio: bugfix for accessors patch
  [SCSI] st: fix kernel BUG at include/linux/scatterlist.h:59!
  [SCSI] initio: fix conflict when loading driver
  [SCSI] sym53c8xx: fix "irq X: nobody cared" regression
  [SCSI] dpt_i2o: driver is only 32 bit so don't set 64 bit DMA mask
  [SCSI] sym53c8xx: fix free_irq() regression
2007-12-19 14:25:56 -08:00
Boaz Harrosh
a169e63740 [SCSI] initio: bugfix for accessors patch
patch: [SCSI] initio: convert to use the data buffer accessors had a
small but fatal bug in that it didn't increment the pointer into the
initio scatterlist descriptors as it looped over the block generated
ones. Fixed here.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-18 16:04:15 -06:00
FUJITA Tomonori
cd81621c5c [SCSI] st: fix kernel BUG at include/linux/scatterlist.h:59!
This is caused by a missing scatterlist initialisation (it only shows
up when sg list handling debugging is turned on).

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Kai Makisara <Kai.Makisara@kolumbus.fi>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-18 16:04:13 -06:00
Alan Cox
99f1f53492 [SCSI] initio: fix conflict when loading driver
> I have a scanner connected to a Initio INI-950 SCSI card and I recently
> upgraded from SuSE 10.2 to 10.3.  The new kernel doesn't see any of my
> devices.  I get the following in /var/log/messages:
>
> ACPI: PCI Interrupt 0000:00:0a.0[A] -> GSI 17 (level, low) -> IRQ 16
> initio: I/O port range 0x0 is busy.
> ACPI: PCI interrupt for device 0000:00:0a.0 disabled

Humm not a collision - thats a bug in the driver updating.  Looks like the
changes I made and combined with Christoph's lost a line somewhere when I
was merging it all.

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-18 16:04:11 -06:00
Tony Battersby
cedefa13db [SCSI] sym53c8xx: fix "irq X: nobody cared" regression
The patch described by the following excerpt from ChangeLog-2.6.24-rc1
eventually causes a "irq X: nobody cared" error after a while:

commit 99c9e0a1d6
Author: Matthew Wilcox <matthew@wil.cx>
Date:   Fri Oct 5 15:55:12 2007 -0400

    [SCSI] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE

After this happens, the kernel disables the IRQ, causing the SCSI card
to stop working until the next reboot.  The problem is caused by the
interrupt handler returning IRQ_NONE instead of IRQ_HANDLED after
handling an interrupt-on-the-fly (INTF) condition.  The following patch
fixes the problem.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Acked-by: Matthew Wilcox <willy@linux.intel.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-18 16:04:09 -06:00
James Bottomley
c80ddf00cd [SCSI] dpt_i2o: driver is only 32 bit so don't set 64 bit DMA mask
This fixes a potential corruption bug where the truncation would cause
reading or writing to the wrong memory area on machines with >4GB of
main memory.

Cc: Stable Kernel Tree <stable@kernel.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-18 16:04:08 -06:00
Tony Battersby
7ee2413ca0 [SCSI] sym53c8xx: fix free_irq() regression
The following commit changed the pointer passed to request_irq(), but
failed to change the pointer passed to free_irq():

commit 99c9e0a1d6
Author: Matthew Wilcox <matthew@wil.cx>
Date:   Fri Oct 5 15:55:12 2007 -0400

    [SCSI] sym53c8xx: Make interrupt handler capable of returning IRQ_NONE

    ...

The result is that free_irq() doesn't actually take any action.  This
patch fixes it.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Acked-by: Christoph Hellwig <hch@infradead.org>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-12-18 16:03:09 -06:00
Bartlomiej Zolnierkiewicz
69ae6fee4f ide-scsi: add ide_scsi_hex_dump() helper
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Denis Cheng <crquan@gmail.com>
Cc: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-12-12 23:31:57 +01:00
Maciej W. Rozycki
522939d45c esp_scsi: fix reset cleanup spinlock recursion
The esp_reset_cleanup() function is called with the host lock held and
invokes starget_for_each_device() which wants to take it too.  Here is a
fix along the lines of shost_for_each_device()/__shost_for_each_device()
adding a __starget_for_each_device() counterpart which assumes the lock
has already been taken.

Eventually, I think the driver should get modified so that more work is
done as a softirq rather than in the interrupt context, but for now it
fixes a bug that causes the spinlock debugger to fire.

While at it, it fixes a small number of cosmetic problems with
starget_for_each_device() too.

Signed-off-by: Maciej W. Rozycki <macro@linux-mips.org>
Acked-by: David S. Miller <davem@davemloft.net>
Cc: James Bottomley <James.Bottomley@steeleye.com>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-10 19:43:55 -08:00
Andrew Morton
24601bbcac revert "dpt_i2o: convert to SCSI hotplug model"
revert

    commit 55d9fcf57b
    Author: Matthew Wilcox <matthew@wil.cx>
    Date:   Mon Jul 30 15:19:18 2007 -0600

        [SCSI] dpt_i2o: convert to SCSI hotplug model

         - Delete refereces to HOSTS_C
         - Switch to module_init/module_exit instead of detect/release
         - Don't pass around the host template and rename it to adpt_template
         - Switch from scsi_register/scsi_unregister to scsi_host_alloc,
           scsi_add_host, scsi_scan_host and scsi_host_put.

Because it caused (for unknown reasons) Andres' all-data-reads-as-zeroes
problem, reported at
http://groups.google.com/group/fa.linux.kernel/msg/083a9acff0330234

Cc: Matthew Wilcox <matthew@wil.cx>
Cc: "Salyzyn, Mark" <mark_salyzyn@adaptec.com>
Cc: James Bottomley <James.Bottomley@SteelEye.com>
Acked-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Cc: Anders Henke <anders.henke@1und1.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Cc: <stable@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-12-10 19:43:54 -08:00
Linus Torvalds
26145f7e7e Merge git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage
  [SCSI] zfcp: fix cleanup of dismissed error recovery actions
  [SCSI] zfcp: fix dismissal of error recovery actions
  [SCSI] qla1280: convert to use the data buffer accessors
  [SCSI] iscsi: return data transfer residual for data-out commands
  [SCSI] iscsi_tcp: fix potential lockup with write commands
  [SCSI] aacraid: fix security weakness
  [SCSI] aacraid: fix up le32 issues in BlinkLED
  [SCSI] aacraid: fix potential panic in thread stop
  [SCSI] aacraid: don't assign cpu_to_le32(constant) to u8
2007-12-03 08:20:11 -08:00
Geert Uytterhoeven
e482179d54 m68k: zorro7xx needs <asm/amigahw.h>
m68k: zorro7xx needs <asm/amigahw.h> if !CONFIG_AMIGA_PCMCIA

Reported by Ingo Juergensmann <ij@2007.bluespice.org>

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-29 09:24:52 -08:00
Denis Cheng
6413f08666 ide-scsi: use print_hex_dump from <linux/kernel.h>
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>
2007-11-27 21:35:58 +01:00
Jeff Garzik
1e64166430 [SCSI] NCR5380: Fix bugs and canonicalize irq handler usage
* Always pass the same value to free_irq() that we pass to
  request_irq().  This fixes several bugs.

* Always call NCR5380_intr() with 'irq' and 'dev_id' arguments.

  Note, scsi_falcon_intr() is the only case now where dev_id is not the
  scsi_host.

* Always pass Scsi_Host to request_irq().  For most cases, the drivers
  already did so, and I merely neated the source code line.  In other
  cases, either NULL or a non-sensical value was passed, verified to be
  unused, then changed to be Scsi_Host in anticipation of the future.

In addition to the bugs fixes, this change makes the interface usage
consistent, which in turn enables the possibility of directly
referencing Scsi_Host from all NCR5380_intr() invocations.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-25 12:19:26 +02:00
Andrew Morton
d297a5d576 aic94xx_sds: rename FLASH_SIZE
arm:

drivers/scsi/aic94xx/aic94xx_sds.c:381:1: warning: "FLASH_SIZE" redefined
In file included from include/asm/arch/irqs.h:22,
                 from include/asm/irq.h:4,
                 from include/asm/hardirq.h:6,
                 from include/linux/hardirq.h:7,
                 from include/asm-generic/local.h:5,
                 from include/asm/local.h:1,
                 from include/linux/module.h:19,
                 from include/linux/device.h:21,
                 from include/linux/pci.h:52,
                 from drivers/scsi/aic94xx/aic94xx_sds.c:28:
include/asm/arch/platform.h:444:1: warning: this is the location of the previous definition

Cc: Gilbert Wu <gilbert_wu@adaptec.com>
Cc: James Bottomley <James.Bottomley@HansenPartnership.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-11-14 18:45:44 -08:00
Jes Sorensen
5c1da582b3 [SCSI] qla1280: convert to use the data buffer accessors
- remove the unnecessary map_single path.
- convert to use the new accessors for the sg lists and the parameters.

Fixed to missing initialization of sg lists before calling
for_each_sg() by Jes Sorensen - sg list needs to be initialized before
trying to pull the elements out of it.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-14 18:25:44 -06:00
Tony Battersby
6ee6a2f025 [SCSI] iscsi: return data transfer residual for data-out commands
Currently, the iSCSI driver returns the data transfer residual for
data-in commands (e.g. read) but not data-out commands (e.g. write).
This patch makes it return the data transfer residual for both types of
commands.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-14 14:52:16 -06:00
Tony Battersby
505f76b306 [SCSI] iscsi_tcp: fix potential lockup with write commands
There is a race condition in iscsi_tcp.c that may cause it to forget
that it received a R2T from the target.  This race may cause a data-out
command (such as a write) to lock up.  The race occurs here:

static int
iscsi_send_unsol_pdu(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
{
	struct iscsi_tcp_cmd_task *tcp_ctask = ctask->dd_data;
	int rc;

	if (tcp_ctask->xmstate & XMSTATE_UNS_HDR) {
		BUG_ON(!ctask->unsol_count);
		tcp_ctask->xmstate &= ~XMSTATE_UNS_HDR; <---- RACE
		...

static int
iscsi_r2t_rsp(struct iscsi_conn *conn, struct iscsi_cmd_task *ctask)
{
	...
	tcp_ctask->xmstate |= XMSTATE_SOL_HDR_INIT; <---- RACE
	...

While iscsi_xmitworker() (called from scsi_queue_work()) is preparing to
send unsolicited data, iscsi_tcp_data_recv() (called from
tcp_read_sock()) interrupts it upon receipt of a R2T from the target.
Both contexts do read-modify-write of tcp_ctask->xmstate.  Usually, gcc
on x86 will make &= and |= atomic on UP (not guaranteed of course), but
in this case iscsi_send_unsol_pdu() reads the value of xmstate before
clearing the bit, which causes gcc to read xmstate into a CPU register,
test it, clear the bit, and then store it back to memory.  If the recv
interrupt happens during this sequence, then the XMSTATE_SOL_HDR_INIT
bit set by the recv interrupt will be lost, and the R2T will be
forgotten.

The patch below (against 2.6.24-rc1) converts accesses of xmstate to use
set_bit, clear_bit, and test_bit instead of |= and &=.  I have tested
this patch and verified that it fixes the problem.  Another possible
approach would be to hold a lock during most of the rx/tx setup and
post-processing, and drop the lock only for the actual rx/tx.

Signed-off-by: Tony Battersby <tonyb@cybernetics.com>
Signed-off-by: Mike Christie <michaelc@cs.wisc.edu>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-14 14:51:58 -06:00
Alan Cox
5f78e89b5f [SCSI] aacraid: fix security weakness
Actually there are several but one is trivially fixed

1.	FSACTL_GET_NEXT_ADAPTER_FIB ioctl does not lock dev->fib_list
but needs to
2.	Ditto for FSACTL_CLOSE_GET_ADAPTER_FIB
3.	It is possible to construct an attack via the SRB ioctls where
the user obtains assorted elevated privileges. Various approaches are
possible, the trivial ones being things like writing to the raw media
via scsi commands and the swap image of other executing programs with
higher privileges.

So the ioctls should be CAP_SYS_RAWIO - at least all the FIB manipulating
ones. This is a bandaid fix for #3 but probably the ioctls should grow
their own capable checks. The other two bugs need someone competent in that
driver to fix them.

Signed-off-by: Alan Cox <alan@redhat.com>
Acked-by: Mark Salyzyn <mark_salyzyn@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-11 17:35:48 -06:00
Salyzyn, Mark
e6096963d2 [SCSI] aacraid: fix up le32 issues in BlinkLED
Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-07 08:17:55 -08:00
Salyzyn, Mark
e85fbc595a [SCSI] aacraid: fix potential panic in thread stop
Got a panic in the threading code on an older kernel when the Adapter
failed to load properly and driver shut down apparently before any
threading had started, can not dupe. Expect that this may be relevant in
the latest kernel, but not sure. This patch does no harm, and should
alleviate the possibility of this panic.

Signed-off-by: Mark Salyzyn <aacraid@adaptec.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-07 08:15:49 -08:00
Stephen Rothwell
3b2d871245 [SCSI] aacraid: don't assign cpu_to_le32(constant) to u8
Noticed on PowerPC allmod config build:

drivers/scsi/aacraid/commsup.c:1342: warning: large integer implicitly truncated to unsigned type
drivers/scsi/aacraid/commsup.c:1343: warning: large integer implicitly truncated to unsigned type
drivers/scsi/aacraid/commsup.c:1344: warning: large integer implicitly truncated to unsigned type

Also fix some whitespace on the changed lines.

Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Acked-by: Mark Salyzyn <mark_salyzyn@adaptec.com>
Signed-off-by: James <James.Bottomley@HansenPartnership.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-07 08:12:02 -08:00
Jeff Garzik
bd3989e006 PCI: Add Kconfig option to disable deprecated pci_find_* API
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-11-05 13:35:17 -08:00
Linus Torvalds
aac9e28d2f Merge master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/jejb/scsi-rc-fixes-2.6:
  [SCSI] ibmvscsi: Prevent IO during partner login
  [SCSI] lpfc : Correct queue tag handling
  [SCSI] Update MAINTAINER email address and trees
  [SCSI] osst: fix if (...) \n #if... cases missing semicolons when false
2007-11-05 09:57:13 -08:00
Jeff Garzik
a341cd0f6a SCSI: add asynchronous event notification API
Originally based on a patch by Kristen Carlson Accardi @ Intel.
Copious input from James Bottomley.

Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2007-11-03 22:23:02 -04:00
Robert Jennings
3c887e8a1a [SCSI] ibmvscsi: Prevent IO during partner login
By setting the request_limit in send_srp_login to 1 we allowed login
requests to be sent to the server adapter.  If this was not an initial
login, but was a login after a disconnect with the server, other I/O
requests could attempt to be processed before the login occured.  These
I/O requests would fail, sometimes resulting in filesystems getting
marked read-only.

To address this we can set the request_limit to 0 while doing the login
and add an exception where login requests, along with task management
events, are always passed to the server.

There is a case where the request_limit had already reached 0 would result
in all events being sent rather than returning SCSI_MLQUEUE_HOST_BUSY; this
has also been fixed by this patch.

Signed-off-by: Robert Jennings <rcj@linux.vnet.ibm.com>
Signed-off-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-03 12:10:36 -05:00
James Smart
7e2b19fbc7 [SCSI] lpfc : Correct queue tag handling
This patch corrects the lpfc tag handling issue identified by Hannes Reinecke
http://marc.info/?l=linux-scsi@m=119270235628850&w=2

The basis for this patch originated from Hajime Kai. Thank You Hajime.

Signed-off-by: hajime-kai@soft.fujitsu.com
Signed-off-by: James Smart <James.Smart@emulex.com>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2007-11-03 12:09:29 -05:00
Jens Axboe
c46f2334c8 [SG] Get rid of __sg_mark_end()
sg_mark_end() overwrites the page_link information, but all users want
__sg_mark_end() behaviour where we just set the end bit. That is the most
natural way to use the sg list, since you'll fill it in and then mark the
end point.

So change sg_mark_end() to only set the termination bit. Add a sg_magic
debug check as well, and clear a chain pointer if it is set.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2007-11-02 08:47:06 +01:00
Russell King
01c0ad5854 [ARM] Fix an rpc_defconfig regression
Fix:

  CC      drivers/scsi/arm/powertec.o
In file included from drivers/scsi/arm/powertec.c:29:
drivers/scsi/arm/scsi.h: In function 'next_SCp':
drivers/scsi/arm/scsi.h:42: error: 'struct scatterlist' has no member named 'page'
drivers/scsi/arm/scsi.h: In function 'init_SCp':
drivers/scsi/arm/scsi.h:80: error: 'struct scatterlist' has no member named 'page'

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2007-10-31 15:21:35 +00:00
Dirk Hohndel
e403149c92 Kbuild/doc: fix links to Documentation files
Fix links to files in Documentation/* in various Kconfig files

Signed-off-by: Dirk Hohndel <hohndel@linux.intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-30 14:26:30 -07:00
Linus Torvalds
20dc9f01a8 Merge branch 'sg' of git://git.kernel.dk/linux-2.6-block
* 'sg' of git://git.kernel.dk/linux-2.6-block:
  Correction of "Update drivers to use sg helpers" patch for IMXMMC driver
  sg_init_table() should use unsigned loop index variable
  sg_last() should use unsigned loop index variable
  Initialise scatter/gather list in sg driver
  Initialise scatter/gather list in ata_sg_setup
  x86: fix pci-gart failure handling
  SG: s390-scsi: missing size parameter in zfcp_address_to_sg()
  SG: clear termination bit in sg_chain()
2007-10-29 07:49:10 -07:00
Al Viro
db3a91fe2b deal with resource allocation bugs in arcmsr
a) for type B we should _not_ iounmap() acb->pmu; it's not ioremapped.
b) for type B we should iounmap() two regions we _do_ ioremap.
c) if ioremap() fails, we need to bail out (and clean up).

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-29 07:41:33 -07:00
Al Viro
142956af52 fix abuses of ptrdiff_t
Use of ptrdiff_t in places like

-                       if (!access_ok(VERIFY_WRITE, u_tmp->rx_buf, u_tmp->len))
+                       if (!access_ok(VERIFY_WRITE, (u8 __user *)
+                                               (ptrdiff_t) u_tmp->rx_buf,
+                                               u_tmp->len))

is wrong; for one thing, it's a bad C (it's what uintptr_t is for; in general
we are not even promised that ptrdiff_t is large enough to hold a pointer,
just enough to hold a difference between two pointers within the same object).
For another, it confuses the fsck out of sparse.

Use unsigned long or uintptr_t instead.  There are several places misusing
ptrdiff_t; fixed.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-29 07:41:33 -07:00
Al Viro
0c7eb2eb80 fix reentrancy bug in arcmsr_get_iop_{r,w}qbuffer()
doh...

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-29 07:41:33 -07:00
Al Viro
6a7d26d58a arcmsr: endianness bug
initializing a field in data shared with the card with
cpu_to_le32(something) | 0x100000 is broken - the field is, indeed,
little-endian and we need cpu_to_le32() on both parts.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-10-29 07:41:33 -07:00