Alan noticed the lack of locking surrounding the driver's dealings
with the fib context managed by the trio of ioctls that are used by
the RAID management applications to retrieve Adapter Initiated FIBs. I
merely expanded the fib lock to include the fib context. There have
been no field reports of any issues generally because the applications
are relatively static and do not come and go often enough to stress
this area. I bloated this patch a little with some space junk.
Signed-off-by: NMark Salyzyn <aacraid@adaptec.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

This moves ch_template and changer_fops structs to the end of file and
removes forward declarations.

This also removes some trailing whitespace.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

ch_probe uses the total number of ch devices as minor.

ch_probe:
	ch->minor = ch_devcount;
...
	ch_devcount++;

Then ch_remove decreases ch_devcount:

ch_remove:
	ch_devcount--;

If you have two ch devices, sch0 and sch1, and remove sch0,
ch_devcount is 1. Then if you add another ch device, ch_probe tries to
create sch1. So you get a warning and fail to create sch1:

Jan 24 16:01:05 nice kernel: sysfs: duplicate filename 'sch1' can not be created
Jan 24 16:01:05 nice kernel: WARNING: at fs/sysfs/dir.c:424 sysfs_add_one()
Jan 24 16:01:05 nice kernel: Pid: 2571, comm: iscsid Not tainted 2.6.24-rc7-ga3d2c2e8-dirty #1
Jan 24 16:01:05 nice kernel:
Jan 24 16:01:05 nice kernel: Call Trace:
Jan 24 16:01:05 nice kernel:  [<ffffffff802a22b8>] sysfs_add_one+0x54/0xbd
Jan 24 16:01:05 nice kernel:  [<ffffffff802a283c>] create_dir+0x4f/0x87
Jan 24 16:01:05 nice kernel:  [<ffffffff802a28a9>] sysfs_create_dir+0x35/0x4a
Jan 24 16:01:05 nice kernel:  [<ffffffff803069a1>] kobject_get+0x12/0x17
Jan 24 16:01:05 nice kernel:  [<ffffffff80306ece>] kobject_add+0xf3/0x1a6
Jan 24 16:01:05 nice kernel:  [<ffffffff8034252b>] class_device_add+0xaa/0x39d
Jan 24 16:01:05 nice kernel:  [<ffffffff803428fb>] class_device_create+0xcb/0xfa
Jan 24 16:01:05 nice kernel:  [<ffffffff80229e09>] printk+0x4e/0x56
Jan 24 16:01:05 nice kernel:  [<ffffffff802a2054>] sysfs_ilookup_test+0x0/0xf
Jan 24 16:01:05 nice kernel:  [<ffffffff88022580>] :ch:ch_probe+0xbe/0x61a

(snip)

This patch converts ch to use a standard minor number management way,
idr like sg and bsg.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

When class_device_create fails, ch_probe needs to fail too.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Many release() methods that are not __exit or __devexit call this
__devexit function, so remove its "__devexit" attribute.

scsi/g_NCR5380.c:
WARNING: vmlinux.o(.text+0xadaf8c): Section mismatch: reference to .exit.text:NCR5380_exit (between 'generic_NCR5380_release_resources' and 'generic_NCR5380_biosparam')
WARNING: vmlinux.o(.text+0xadd18c): Section mismatch: reference to .exit.text:NCR5380_exit (between 'generic_NCR5380_release_resources' and 'generic_NCR5380_biosparam')
scsi/pas16.c, seagate.c:
WARNING: vmlinux.o(.text+0xb29e91): Section mismatch: reference to .exit.text:NCR5380_exit (between 'pas16_release' and 'seagate_st0x_info')
t128.c:
WARNING: vmlinux.o(.text+0xb2a774): Section mismatch: reference to .exit.text:NCR5380_exit (between 't128_release' and 't128_biosparam')
dtc.c, sym2/sym_fw.c:
WARNING: vmlinux.o(.text+0xb2f215): Section mismatch: reference to .exit.text:NCR5380_exit (between 'dtc_release' and 'sym_fw1_patch')
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

The patch "[SCSI] sg: use idr to replace static arrays" in 2.6.24-rc1
causes a bogus line to appear in /proc/scsi/sg/devices containing
"-1 -1 -1 -1 -1 -1 -1 -1 -1" when there are no SCSI devices in the
system.  In 2.6.23, /proc/scsi/sg/devices is empty when there are no
SCSI devices in the system.  A similar problem exists with
/proc/scsi/sg/device_strs.  The following patch restores the behavior
of 2.6.23.
Signed-off-by: NTony Battersby <tonyb@cybernetics.com>
Acked-by: NDouglas Gilbert <dougg@torque.net>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

eh_device_reset_handler was already added to scsi_host_template
in iscsi_tcp, and is now added also for iscsi_iser.
Signed-off-by: NErez Zilber <erezz@voltaire.com>
Signed-off-by: NMike Christie <michaelc@cs.wisc.edu>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Only hosts which actually have ISA DMA requirements need sense buffers
coming out of ZONE_DMA, so only use the __GFP_DMA flag for that case
to avoid allocating this scarce resource if it's not necessary.

[tomo: fixed slab leak in failure case]
Acked-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

This removes static array sense_buffer in scsi_cmnd and uses
dynamically allocated sense_buffer (with GFP_DMA).

The reason for doing this is that some architectures need cacheline
aligned buffer for DMA:

http://lkml.org/lkml/2007/11/19/2

The problems are that scsi_eh_prep_cmnd puts scsi_cmnd::sense_buffer
to sglist and some LLDs directly DMA to scsi_cmnd::sense_buffer. It's
necessary to DMA to scsi_cmnd::sense_buffer safely. This patch solves
these issues.

__scsi_get_command allocates sense_buffer via kmem_cache_alloc and
attaches it to a scsi_cmnd so everything just work as before.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

The macro tells us whether the device is (or contains) an enclosure device.
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

This patch adds a new scsi_device flag (last_sector_bug) for devices
which contain a bug where the device crashes when the last sector is
read in a larger then 1 sector read.

This is for example the case with sdcards in the HP PSC1350 printer
cardreader and in the HP PSC1610 printer cardreader.
Signed-off-by: NHans de Goede <j.w.r.degoede@hhs.nl>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

This patch

commit 8ae732a9
Author: Tejun Heo <htejun@gmail.com>
Date:   Fri Dec 7 22:36:23 2007 +0900

    [SCSI] make pcmcia directory use obj-y|m instead of subdir-y|m

Moved the scsi Makefile into conformance, but also caused the pcmcia
subdirectory to get built in for the first time, leading to duplicate
symbols in an allyesconfig build.  Since evidently no-one relies on
these being built in, fix this by ensuring they can only be built as
modules.
Acked-by: NTejun Heo <htejun@gmail.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

The cards being added are supported in a limited sense already through
family matching, but we needed to add some functionality to the driver
to expose selectively the physical drives. These Physical drives are
specifically marked to not be part of any array and thus are declared
JBODs (Just a Bunch Of Drives) for generic SCSI access.

We report that this is the second patch in a set of two, but merely
depends on the stand-alone functionality of the first patch which adds
in that case the ability to report a driver feature flag via sysfs. We
leverage that functionality by reporting that this driver now supports
this new JBOD feature for the controller so that the array management
applications may react accordingly and guide the user as they manage
the controller.
Signed-off-by: NMark Salyzyn <aacraid@adaptec.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Feature enhancement, adding a 'flags' entry that will reside in the
host controller's tree, with a newline separated list of arbitrary
ascii named features that indicate whether the combination of driver
and controller has support for said feature. Breaking from the
one-line output typical of sysfs entries, newline was added to tailor
for grep, or simple gets line by line string match within an
application. I added one for a compiler time check for existence of
debug print output, one for an optional manifest defined enhanced
status reporting in the logs, and one for runtime reporting whether
the controller and driver supports arrays larger than 2TB. Adaptec's
storage management software uses the last flag to determine whether to
make available the creation of arrays larger than 2TB, otherwise a
warning is posted.
Signed-off-by: NMark Salyzyn <aacraid@adaptec.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

There is a case where 54xx HBA loads MID firmware as it use 24xx
firmware. In this case, the driver should issue
MBC_MID_INITIALIZE FIRMWARE even though the HBA doesn't support
NPIV.  This patch make changes in the driver so that could behave
accordingly.
Signed-off-by: NSeokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Original code would clear the buffer after the firmware had
already been initialized to use the buffer, thus potentially
and inadvertantly clearing data previously DMA'd by the
firmware.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

FCE support enables the firmware to record FC extended link
services and basic link services frames which have been
transmitted and received by the ISP.  This allows for a limited
view of the FC traffic through the ISP without using a FC
analyzer.  This can be useful in situations where a physical
connection to the FC bus is not possible.

The driver exports this information in two ways -- first, via a
debugfs node exported for all supported ISPs under:

	<debugfs_mount_point>/qla2xxx/qla2xxx_<host_no>/fce

where a read of the 'fce' file will provide a snapshot of the
firmware's FCE buffer; and finally, the FCE buffer will be
extracted during a firmware-dump scenario.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

In preparation for FCE (Fibre Channel Event) tracing support.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

- make the following needlessly global code static:
  - qla_attr.c: qla24xx_vport_delete()
  - qla_attr.c: qla24xx_vport_disable()
  - qla_mid.c: qla24xx_allocate_vp_id()
  - qla_mid.c: qla24xx_find_vhost_by_name()
  - qla_mid.c: qla2x00_do_dpc_vp()
  - qla_os.c: struct qla2x00_driver_template
  - qla_os.c: qla2x00_stop_timer()
  - qla_os.c: qla2x00_mem_alloc()
  - qla_os.c: qla2x00_mem_free()
  - qla_sup.c: qla2x00_lock_nvram_access()
  - qla_sup.c: qla2x00_unlock_nvram_access()
  - qla_sup.c: qla2x00_get_nvram_word()
  - qla_sup.c: qla2x00_write_nvram_word()
- #if 0 the following unused global functions:
  - qla_mbx.c: qla2x00_system_error()
- qla_os.c: remove some unneeded function prototypes
- removed unused functions:
  - qla_dbg.c: qla2x00_dump_pkt()
  - qla_mbx.c: qla2x00_get_serdes_params()
  - qla_mbx.c: qla2x00_get_idma_speed()
  - qla_mbx.c: qla24xx_get_vp_database()
  - qla_mbx.c: qla24xx_get_vp_entry()
Signed-off-by: NAdrian Bunk <bunk@kernel.org>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Small modifications and
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

During vport creation, there was a possibility to get create a
vport with same port_name as pport.  A new filter has added to
compare given port_name with the port_name of the pport.
Signed-Off-by: NSeokmann Ju <seokmann.ju@qlogic.com>
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Instead of abusing the semaphore interfaces for mailbox command
completions.

Additional cleanups and
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

As the driver depends on the DPC routine to handle bottom-half
loop resynchronization in order to recover from the issue-lip
request.  The issue_lip call is sleeping context capable, so just
issue the reset function there.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Some flash parts have a slow enable write-protection (WP)
operation whereby subsequent FLASH accesses would fail if the WP
operation had not completed.  Software now polls the SPI's
status-register for WP completion.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

The driver stores the contents of PCI resources into unsigned
long's before ioremapping. This breaks on 32-bit platforms which
support 64-bit MMIO resources.

Correct code by removing the temporary variables used during MMIO
PIO mapping and using resource_size_t where applicable.  Also
correct a small typo in a printk() where the wrong region number
was displayed.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

HBAs supporting these additional counters include ISP24xx and
ISP25xx type boards.
Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Signed-off-by: NAndrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Convert st to unlocked_ioctl. The necessary locking was already in place.
Signed-off-by: NKai Makisara <kai.makisara@kolumbus.fi>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

I was amazed at how much embedded space was present in the aacraid
driver source files. Just selected five files from the set to clean up
for now and the attached patch swelled to 73K in size!

- Removed trailing space or tabs
- Removed spaces embedded within tabs
- Replaced leading 8 spaces with tabs
- Removed spaces before )
- Removed ClusterCommand as it was unused (noticed it as one triggered by above)
- Replaced scsi_status comparison with 0x02, to compare against SAM_STATUS_CHECK_CONDITION.
- Replaced a long series of spaces with tabs
- Replaced some simple if...defined() with ifdef/ifndef
Signed-off-by: NMark Salyzyn <aacraid@adaptec.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: NDouglas Gilbert <dougg@torque.net>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

If cdev_add fails in sg_add, sg_remove crashes since class_data is
bogus.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: NDouglas Gilbert <dougg@torque.net>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

0x02 becomes SAM_STAT_CHECK_CONDITION
Signed-off-by: NMark Salyzyn <aacraid@adaptec.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

As of now, compat_ioctl already runs without the BKL, whereas ioctl runs
with the BKL. This patch first converts changer_fops to use a .unlocked_ioctl
member. It applies the same locking rationale than ch_ioctl_compat() uses
to ch_ioctl().
Signed-off-by: NMathieu Segaud <mathieu.segaud@regala.cx>
Reviewed-by: NMatthew Wilcox <willy@linux.intel.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

When I use cdparanoia my logs get spammed a lot by

printk: 464 messages suppressed.
sg_write: data in/out 30576/30576 bytes for SCSI command 0xbe--guessing data in;
   program cdparanoia not setting count and/or reply_len properly
printk: 1078 messages suppressed.

and many more of those. With this patch the message is only printed once
for a command in a row.

v1->v2: Prevent rate limit messages too (pointed out by jejb)
Signed-off-by: NAndi Kleen <ak@suse.de>
Acked-by: NDouglas Gilbert <dougg@torque.net>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

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: NAlan Cox <alan@redhat.com>
Signed-off-by: NMark Salyzyn <aacraid@adaptec.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

The promised min_t() cleanup. Purely cosmetic.
Signed-off-by: NMark Salyzyn <aacraid@adaptec.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

This replaces sizeof sense_buffer with SCSI_SENSE_BUFFERSIZE in
several LLDs. It's a preparation for the future changes to remove
sense_buffer array in scsi_cmnd structure.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

LLDs don't need to zero out scsi_cmnd::sense_buffer in queuecommand
since scsi-ml does. This is a preparation of the future changes to
allocate the sense_buffer only when necessary.

Many LLDs zero out the sense_buffer before touching it on the error
case. This patch lets them alone for now because new APIs for them
would be added later on.
Signed-off-by: NFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: N"Salyzyn, Mark" <Mark_Salyzyn@adaptec.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>

Change megaraid_pci_driver_g variable name so that it matches the modpost
whitelist that allows pointers to init text/data.

WARNING: vmlinux.o(.data+0x1a8e30): Section mismatch: reference to .init.text:megaraid_probe_one (between 'megaraid_pci_driver_g' and 'class_device_attr_megaraid_mbox_app_hndl')
Signed-off-by: NRandy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: NJames Bottomley <James.Bottomley@HansenPartnership.com>