Currently a DREP is only sent in response to a DREQ if a connection
has been found matching the DREQ, and it is in the proper state. Once
a DREP is sent, the local connection moves into timewait. Duplicate
DREQs received while in this state result in re-sending the DREP.
However, it's likely that the local connection will enter and exit
timewait before the remote side times out a lost DREP and resends a DREQ.
To handle this, we send a DREP in response to a DREQ, even if a local
connection is not found. This avoids maintaining disconnected
id's in timewait states for excessively long times, just to handle a
lost DREP.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
If the ib_cm module is unloaded while id's are still in timewait, the
CM will destroy the work queue used to process timewait. Once the
id's exit timewait, their timers will fire, leading to a crash trying
to access the destroyed work queue.
We need to track id's that are in timewait, and cancel their deferred
work on module unload.
Signed-off-by: Sean Hefty <sean.hefty@intel.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Fill in "max_vl_num" (encoded according to VLCap field in the PortInfo MAD)
and "init_type_reply" values in the ib_query_port() verb.
Signed-off-by: Jack Morgenstein <jackm@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Enable multiple concurrent connections to the same SRP target:
1) Use port GUID instead of node GUID in the initiator port
identifier. This allows connections to be made from multiple HCA
ports at the same time.
2) Let the user specify the identifier extention when adding the
device. This allows userspace to make multiple connections even
from the same port, if it wants too.
Without this, only one connection can be made from any given HCA, even
if it has multiple ports, because we don't use multi-channel mode, so
targets will only allow one connection from a given initiator port ID.
Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il>
Signed-off-by: Michael S. Tsirkin <mst@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
scsi_host_alloc() already allocates with kzalloc(), so the struct Scsi_Host
is zeroed out, including the private data portion. Remove the redundant
memset that zeros this out again in the SRP initiator.
Signed-off-by: Ishai Rabinovitz <ishai@mellanox.co.il>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
The AMSO driver was not thread-safe in the post WR code and had
code that would sleep if the WR post FIFO was full. Since these
functions can be called on interrupt level I changed the sleep to a
udelay.
Signed-off-by: Tom Tucker <tom@opengridcomputing.com>
Signed-off-by: Roland Dreier <rolandd@cisco.com>
This was triggered, but not the fault of, the dirty page accounting
patches. Suitable for -stable as well, after it goes upstream.
Unable to handle kernel NULL pointer dereference at virtual address 0000004c
EIP is at _spin_lock+0x12/0x66
Call Trace:
[<401766e7>] __set_page_dirty_buffers+0x15/0xc0
[<401401e7>] set_page_dirty+0x2c/0x51
[<40140db2>] set_page_dirty_balance+0xb/0x3b
[<40145d29>] __do_fault+0x1d8/0x279
[<40147059>] __handle_mm_fault+0x125/0x951
[<401133f1>] do_page_fault+0x440/0x59f
[<4034d0c1>] error_code+0x39/0x40
[<08048a33>] 0x8048a33
Signed-off-by: Nick Piggin <npiggin@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Fix these 2.6.19-rc1 build warnings:
CC arch/sparc/kernel/prom.o
arch/sparc/kernel/prom.c: In function `of_set_property':
arch/sparc/kernel/prom.c:246: warning: passing arg 2 of `prom_setprop' discards qualifiers from pointer target type
arch/sparc/kernel/prom.c: In function `build_one_prop':
arch/sparc/kernel/prom.c:446: warning: unused variable `len'
arch/sparc/kernel/prom.c:480: warning: ignoring return value of `prom_getproperty', declared with attribute warn_unused_result
Signed-off-by: Martin Habets <errandir_news@mph.eclipse.co.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
They have to be unique system-wide, so use
"NAME@NODE" as the string pattern of the non-root
nodes.
Thanks to Andrew Morton for fixing the error value
checking in bus_add_device() which made this problem
finally noticable.
Signed-off-by: David S. Miller <davem@davemloft.net>
ultralinux@vger is deprecated, folks should use
sparclinux@vger for both sparc ports.
Eddie, Anton, and Jakub haven't been active in
sparc64 maintainence for years, so best to remove
them as reports do nothing more than fill up their
mailboxes :)
Signed-off-by: David S. Miller <davem@davemloft.net>
Make sure cpu_has_fpu (which uses smp_processor_id()) is used only in
atomic context.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
TX49 CPUs have a SYNC instruction so that CONFIG_CPU_HAS_WB is no
longer needed.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Make sure that RA on top of interrupt stack is an address of ret_from_irq,
so that dump_stack etc. can trace info interrupted context.
Also this patch fixes except_vec_vi_handler and __smtc_ipi_vector which
seems broken.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Only revisions < 4.0 don't have a functional wait instruction.
From Thomas Koeller (Thomas.Koeller@baslerweb.com).
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Compile fixes related to changed tty flip buffer handling.
Signed-off-by: Kars de Jong <jongk@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
- SERIAL167 is no longer broken
- Removed some unused variables from the driver to fix compiler warnings
Signed-off-by: Kars de Jong <jongk@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Remove unused arch/m68k/apollo/dma.c, which was obsoleted by the move to the
generic DMA API.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Misc Atari fixes:
- initialize correct number of atari irqs
- silence vbl interrupt until it's used by atafb
- use mdelay() to read clock if necessary
Signed-off-by: Roman Zippel <zippel@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Enable HIL configuration options on HP300
Signed-off-by: Kars de Jong <jongk@linux-m68k.org>
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Due to code bugs or misbehaving hardware it is possible that we can
receive an interrupt that we have not mapped into a linux irq. Calling
BUG when that happens is very rude, and if the problem is mild enough
prevents anything else from getting done.
So instead of calling BUG just scream loudly about the problem and
continue running. We don't have enough knowledge to know which
interrupt triggered this behavior so we don't acknowledge it. This will
likely prevent a recurrence of the problem by jamming up the works with
an unacknowledged interrupt.
If the interrupt was something important it is quite possible that
nothing productive will happen past this point. But it is now at least
possible to keep working if the kernel can survive without the interrupt
we dropped on the floor.
Solutions like irqpoll should generally make dropped irqs non-fatal.
Signed-off-by: Eric W. Biederman <ebiederm@xmission.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
This patch moves code out of fs/xattr.c:listxattr into a new function -
vfs_listxattr. The code for vfs_listxattr was originally submitted by Bill
Nottingham <notting@redhat.com> to Unionfs.
Sorry about that. The reason for this submission is to make the
listxattr code in fs/xattr.c a little cleaner (as well as to clean up
some code in Unionfs.)
Currently, Unionfs has vfs_listxattr defined in its code. I think
that's very ugly, and I'd like to see it (re)moved. The logical place
to put it, is along side of all the other vfs_*xattr functions.
Overall, I think this patch is benefitial for both kernel.org kernel and
Unionfs.
Signed-off-by: Josef "Jeff" Sipek <jsipek@cs.sunysb.edu>
Acked-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Cast to (void *) in request_irq() argument is stupid and
only hides problems...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Use the new typedef for interrupt handler function pointers rather than
actually spelling out the full thing each time. This was scripted with the
following small shell script:
#!/bin/sh
egrep -nHrl -e 'irqreturn_t[ ]*[(][*]' $* |
while read i
do
echo $i
perl -pi -e 's/irqreturn_t\s*[(]\s*[*]\s*([_a-zA-Z0-9]*)\s*[)]\s*[(]\s*int\s*,\s*void\s*[*]\s*[)]/irq_handler_t \1/g' $i || exit $?
done
Signed-Off-By: David Howells <dhowells@redhat.com>
We should pass "wait_event_interruptible()" the wait-queue itself, not
the pointer to it. The magic macro will pointerize it internally.
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
