I just ran into a bug introduced by the most recent iosapic.c patch.
The scenario is a builtin driver is up and running happily.  A module
loads for a devices that happens to share the same interrupt vector,
in this case a network driver.  The module calls pci_enable_device()
as it should, which eventually lands in iosapic_enable_intr().  We
then proceed to mask the interrupt and kill the device that's already
running.  As a bonus, request_interrupt() doesn't fix the problem
because we only call the startup for the interrupt handler on the
first action attached to the interrupt.

I think the best way out of this is simply to detect when an action is
already attached to a vector and leave it alone.  This also prevents
interrupts from moving to other cpus (on boxes w/o irq redirection)
for no good reason.

into tiger.hpl.hp.com:/data1/bk/lia64/to-linus-2.5

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into ppc970.osdl.org:/home/torvalds/v2.6/linux

into nuts.davemloft.net:/disk1/BK/net-2.6

Since symlink.c uses "name" field of a kobj when it calculates the
length,  it gets a wrong value if the kobj's name  has more than 20
charathers.  A correct way to do that is to call kobject_name(kobj)
instead of using kobj->name directly.

into ppc970.osdl.org:/home/torvalds/v2.6/linux

this patch (2.4 & 2.6) fixes a bug about the timeout value. The formula
used to calculate jiffies from timeout is wrong.
The new formula is ok and takes care of integer computation/rounding.
There is the same bug in the tiglusb.c module which will be fixed by another
patch.

Handle some PL-2301/2302 devices better.

I just checked out the latest 2.6.6-rc1-mm1 to see that the ID patch for
ftdi has applied cleanly, but apparently someone was faster and in the
combined ID table our ID's were missing.
Most probably the patch program got confused and applied the hung at wrong
spot..

Attached is a patch that places that 2 lines in the correct spot.

Hi,

this patch (cumulative; 2.4 & 2.6) fixes another bug in the tiglusb
driver. The formula used to calculate jiffies from timeout is wrong.
The new formula is ok and takes care of integer computation/rounding.
This is the same kind of bug than in the tipar char driver.

Warnings aren't terribly important in and of themselves, but there
isn't really much the warning tells us to do here, so it would appear
that caving in to the compiler is the thing to do for now.

Various build fixes:  64bit (Andrew Morton), static linking,
broken on big-endian, etc.

Tighten up the integration with the main "ether" driver, so
state transitions and host ethernet addresses are shared too.
Add missing spinlock calls around RNDIS command outcall,
fix GET_INTERFACE issue, host mustn't clobber netdev flags.

Minor code cleanups.

Cope better when PCI misbehaves badly and registers misbehave:

    - terminate some loops before they get to infinity
       * capability scan
       * port reset
    - after init failure, memory may already be cleaned up

Some systems have been reporting such problems after ACPI resume.

This replaces current_thread_info()->cpu in i386' init_IRQ() by the
equivalent smp_processor_id().

Reduces overhead on UP, and makes the code cleaner.

This simplifies the Pentium M quirk code in nmi.c, and eliminates an
unnecessary apic_read().

Local APIC accesses are not zero-cycle; let's not inflict more damage
than we must.

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

We need some alignement of those structs for proper operations especially
with FP and Altivec, or SLAB_DEBUG can break us.

From: Stephen Rothwell <sfr@canb.auug.org.au>

This patch just adds some proc entries for the virtual tape and cdrom
drivers to allow mapping between linux devices and OS/400 ones.  This is
expected by existing users and there is no other way to do this
translation.

From: "J. Bruce Fields" <bfields@fieldses.org>

Unregister svcauth_gss caches on exit from gss module; fixes an oops on
rmmod.

From: Benjamin Herrenschmidt <benh@kernel.crashing.org>

From: David Woodhouse <dwmw2@infradead.org>

Without this the task struct gets unaligned when using SLAB_DEBUG, causing
random problems with FP and Altivec.

From: Ralf Baechle <ralf@linux-mips.org>

MIPS now also uses the generic ioctl compat code.

From: Ralf Baechle <ralf@linux-mips.org>

MIPS never uses a.out

From: Ralf Baechle <ralf@linux-mips.org>

- Add HPC3 PS/2 driver bits for SGI IP22 aka Indy
- Add Mace PS/2 driver bits for SGI IP32 aka O2
- Add R4030 PS/2 driver bits for Jazz family
- Don't register I/O ports where we're using the I/O port memory window
   to access the i8042 registers

From: Ralf Baechle <ralf@linux-mips.org>

Add Pete to CREDITS for all the time he's invested into supporting the AMD
Alchemy of SOCs and eval boards.

From: Ralf Baechle <ralf@linux-mips.org>

All MIPS systems use the same PCI code now.

Fix the incorrect comment which caused the fb_ioctl confusion.

From: Matt Mackall <mpm@selenic.com>

Delete obsolete comment and kill test of obsolete define.

From: Matt Domsch <Matt_Domsch@dell.com>

The patch below from Michael E.  Brown properly sets the owner field of a
sysfs attribute.  Without this patch, it is possible to crash the kernel with
a simultaneous insmod/rmmod while reading files exported by the module.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

Add support for z990 crypto instructions to in-kernel crypto api.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

zfcp host adapter changes:
 - Fix error recovery stall in case of unavailable nameserver.
 - Reset host_scribble field to NULL in scsi_cmd.
 - Remove request debug code.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

dasd device driver changes:
 - Initialize open_count with -1 to account for blkdev_open in
   dasd_scan_partitions.
 - Introduce USE_ERP request flag to selectivly switch off error
   recovery for reserve, release & unconditional reserve ioctls.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

Network driver changes:
 - qeth: Fix reference counting in regard to sysfs backing store patches.
 - qeth: Prefix kernel thread names with qeth_.
 - qeth: Remove inbound and outbound tasklets. Handle buffers directly
         in the interrupts handlers.
 - iucv: Add missing kfree in iucv_register_program.
 - iucv: Add missing return in netiucv_transmit_skb.
 - iucv: Check for NULL pointer in conn_action_txdone.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

3270 device driver changes:
 - Add NULL pointer checks.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

Common i/o layer changes:
 - Quiesce active subchannels for lpar reipl.
 - Delete timer after reception of interrupt for kill on timeout.
 - Cleanup some comments in qdio.

From: Martin Schwidefsky <schwidefsky@de.ibm.com>

s390 core changes:
 - Fix race in do_call_softirq in regard to kernel preemption.
 - Fix typo in compat mq system call wrappers.
 - Add s390 to Kconfig for AUDITSYSCALL.
 - Redefine TASK_SIZE to TASK31_SIZE for compilation of binfmt_elf32.
 - Use correct error value for sys32_ipc when called with an invalid number.
 - New default configuration.

From: Stephen Rothwell <sfr@canb.auug.org.au>

This patch fixes loading viocd as a module.  It would oops because I was
passing the address of a static buffer to dma_map_single and when loaded as
a module, this address is not valid for that purpose.

There are a couple of simple cleanups here as well.

It no longer has any callers.