On an ATA error response, take the device down instead of
sending another ATA device identify command.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>

Always clone incoming skbs, allowing other AoE listeners
to exist in the kernel.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

This patch is a bugfix that follows and depends on the
eight aoe driver patches sent January 19th.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Update aoe driver version number.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The aoe driver is not compatible with 2.6 kernels older
than 2.6.2.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Instead of making the user wait or do it manually, refresh
device information on its last close by issuing a config
query to the device.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Retransmit to the current network interface for an AoE device.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>

Users were confused by the driver being called "aoe-2.6-$version".
This form looks less like a Linux kernel version number.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Increase the number of AoE packets per device that can be outstanding
at one time, increasing performance.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Allow the driver to recognize AoE devices that have changed size.
Devices not in use are updated automatically, and devices that are in
use are updated at user request.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Zero the data in new socket buffers to prevent leaking information.
Signed-off-by: N"Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NJens Axboe <axboe@suse.de>

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Cc: Paul Clements <Paul.Clements@steeleye.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Semaphore to mutex conversion.

The conversion was generated via scripts, and the result was validated
automatically via a script as well.
Signed-off-by: NArjan van de Ven <arjan@infradead.org>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Acked-by: NJens Axboe <axboe@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Convert from semaphore to mutex.
Untested as I have no access to a floppy drive at the moment.
Signed-off-by: NJes Sorensen <jes@sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Cc: Jens Axboe <axboe@suse.de>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Convert to use mutex from a semaphore
Signed-off-by: NJes Sorensen <jes@sgi.com>
Signed-off-by: NIngo Molnar <mingo@elte.hu>
Cc: Peter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

free_hba() sets hba[i] to NULL, the dereference afterwards results in this
crash.  Setting busy_initializing to 0 actually looks unnecessary, but I'm
not entirely sure, which is why I left it in.

cciss: controller appears to be disabled
Unable to handle kernel NULL pointer dereference at virtual address 00000370
 printing eip:
c1114d53
*pde = 00000000
Oops: 0002 [#1]
Modules linked in:
CPU:    0
EIP:    0060:[<c1114d53>]    Not tainted VLI
EFLAGS: 00010286   (2.6.16 #1)
EIP is at cciss_init_one+0x4e9/0x4fe
eax: 00000000   ebx: c132cd60   ecx: c13154e4   edx: c27d3c00
esi: 00000000   edi: c2748800   ebp: c2536ee4   esp: c2536eb8
ds: 007b   es: 007b   ss: 0068
Process swapper (pid: 1, threadinfo=c2536000 task=c2535a30)
Stack: <0>00000000 00000000 00000000 c13fdba0 c2536ee8 c13159c0 c2536f38
f7c74740
       c132cd60 c132cd60 ffffffed c2536ef0 c10c1d51 c2748800 c2536f04
c10c1d85
       c132cd60 c2748800 c132cd8c c2536f14 c10c1db8 c2748848 00000000
c2536f28
Call Trace:
 [<c10031d5>] show_stack_log_lvl+0xa8/0xb0
 [<c1003305>] show_registers+0x102/0x16a
 [<c10034a2>] die+0xc1/0x13c
 [<c1288160>] do_page_fault+0x38a/0x525
 [<c1002e9b>] error_code+0x4f/0x54
 [<c10c1d51>] pci_call_probe+0xd/0x10
 [<c10c1d85>] __pci_device_probe+0x31/0x43
 [<c10c1db8>] pci_device_probe+0x21/0x34
 [<c110a654>] driver_probe_device+0x44/0x99
 [<c110a73f>] __driver_attach+0x39/0x5d
 [<c1109e1c>] bus_for_each_dev+0x35/0x5a
 [<c110a777>] driver_attach+0x14/0x16
 [<c110a220>] bus_add_driver+0x5c/0x8f
 [<c110ab22>] driver_register+0x73/0x78
 [<c10c1f6d>] __pci_register_driver+0x5f/0x71
 [<c13bf935>] cciss_init+0x1a/0x1c
 [<c13aa718>] do_initcalls+0x4c/0x96
 [<c13aa77e>] do_basic_setup+0x1c/0x1e
 [<c10002b1>] init+0x35/0x118
 [<c1000cf5>] kernel_thread_helper+0x5/0xb
Code: 04 b5 e0 de 40 c1 8d 50 04 8b 40 34 e8 3f b7 f9 ff 8b 04 b5 e0 de
40 c1 e8 aa f3 ff ff 89 f0 e8 e8 fa ff ff 8b 04 b5 e0 de 40 c1 <c7> 80
70 03 00 00 00 00 00 00 83 c8 ff 8d 65 f4 5b 5e 5f 5d c3
 <0>Kernel panic - not syncing: Attempted to kill init!
Signed-off-by: NPatrick McHardy <kaber@trash.net>
Cc: <mike.miller@hp.com>
Cc: <stable@kernel.org>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NUwe Zeisberger <Uwe_Zeisberger@digi.com>
Signed-off-by: NAdrian Bunk <bunk@stusta.de>

Matt mentioned that a very old ZIP-100 actually does need this, but I am
yet to see anyone who actually has one still working and uses ub with it.
He/she must be a retrocomputing geek, who can easily bias it to usb-storage
with libusual, if needed. Meanwhile, common folks have trouble with poorly
designed USB keys and some el-cheapo European music players. I think we
better drop this for now.
Signed-off-by: NPete Zaitcev <zaitcev@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Remove the "diag" file from the sysfs. The usbmon is good enough these days
so I do not need this feature anymore. Also, sysfs is a pain. Al Viro caught
a race in this, which I thought too bothersome to fix.
Signed-off-by: NPete Zaitcev <zaitcev@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

The first_open was long overdue for removal, but I wanted to keep this
separate for other changes in case of regressions.
Signed-off-by: NPete Zaitcev <zaitcev@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Switch from kmalloc+memset to kzalloc.
Signed-off-by: NPete Zaitcev <zaitcev@redhat.com>
Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>

Signed-off-by: NAl Viro <viro@zeniv.linux.org.uk>

Signed-off-by: NMatt Mackall <mpm@selenic.com>
Tested-by: NAnders K. Pedersen <akp@cohaesio.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NJames Bottomley <James.Bottomley@SteelEye.com>

When attempting to open the device for writing, only return -EROFS if the disc
appears to be readable but not writable.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Fix the pkt_writable_track() function to make it work correctly for all types
of CD/DVD discs.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Writing the detected disc type in the kernel log is not useful during normal
use of the driver, so remove the printk statements.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Boolean functions should return non-zero when they mean "true", otherwise the
calling code looks weird.  (As suggested by Linus.)
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

It looks like the code in pkt_generic_packet() worked by luck in the past, but
after commit 186d330e leaving rq->cmd_len
uninitialized doesn't work any more.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Reduce stack usage in the pkt_start_write() function.  Even though it's not
currently a real problem, the pages and offsets arrays can be eliminated,
which saves approximately 1000 bytes of stack space.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Unlocking the door when the disc is in use is obviously not good, because then
it's possible to eject the disc at the wrong time and cause severe disc data
corruption.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

If opening for write fails, the open method should return -EROFS.  This makes
"mount" try again with a read-only mount, instead of just giving up.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Change some messages that don't indicate an error so that they are only
printed when debugging is enabled.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The softirq rq completion handler needs to save/restore interrupt flags
appropriately.
Signed-off-by: NJens Axboe <axboe@suse.de>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Allocate memory for read-gathering at open time, when it is known just how
much memory is needed.  This avoids wasting kernel memory when the real packet
size is smaller than the maximum packet size supported by the driver.  This is
always the case when using DVD discs.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

Unless the help text is outdated, this seems to be logical.
Signed-off-by: NAdrian Bunk <bunk@stusta.de>
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The version information is not useful for a driver that is maintained in
Linus' kernel tree.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>

The pktcdvd driver was using an 8 bit field to store the packet length
obtained from the disc track info.  This causes it to overflow packet length
values of 128KB or more.  I changed the field to 32 bits to fix this.

The pktcdvd driver defaulted to its maximum allowed packet length when it
detected a 0 in the track info field.  I changed this to fail the operation
and refuse to access the media.  This seems more sane than attempting to
access it with a value that almost certainly will not work.
Signed-off-by: NPeter Osterlund <petero2@telia.com>
Signed-off-by: NAndrew Morton <akpm@osdl.org>
Signed-off-by: NLinus Torvalds <torvalds@osdl.org>