This config option is introduced to help reduce user confusion,
and eliminate conflicts between the IDE driver (which is often
built into user kernels) and the new libata SATA driver.

into pobox.com:/spare/repo/libata-2.6

into kernel.bkbits.net:/home/davem/sparc-2.6

I noticed that insert_resource() incorrectly handles the case of an
existing parent resource with the same ending address as a newly added
child.  This results in incorrect nesting, like the following:

	# cat /proc/ioports
	<snip>
	002f0000-002fffff : PCI Bus #48
	  00200000-002fffff : /pci@800000020000003
	</snip>
Signed-off-by: John Rose <johnrose@austin.ibm.com>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Make sure that number of sectors != 0 for in/out command before sending
it to drive.  Remove no longer needed checks from flagged_* PIO handlers.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

PIO handlers under CONFIG_IDE_TASKFILE_IO=n are never used for bio
based requests (rq->bio is always NULL) so we can use rq->buffer
directly instead of calling ide_[un]map_buffer().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- merge status checking code for rq->current_nr_sectors
  and !rq->current_nr_sectors cases
- remove !rq->bio check as it is always true
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

These handlers are nowadays used only for REQ_DRIVE_TASKFILE
requests (rq->bio is always NULL) which aren't retried et all so
remove code 'rewinding' rq->current_nr_sectors and some FIXMEs.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

If REQ_DRIVE_* request fails ide_end_drive_cmd() should be called
for it not ->end_request().  This was broken by 2.6.5, fix it.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

'cat /proc/ide/hdx/identify' generates REQ_DRIVE_TASKFILE request
(for WIN_PIDENTIFY command) even for devices controlled by ide-cd.
All other drivers don't try to retry such requests.

Acked by Jens.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

First introduced in 2.4.19/2.5.3 as ALTSTAT_SCREW_UP, never used.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

- do not unregister ide-pnp driver while detaching random
  IDE device from random IDE device driver if IDE is modular
  (somebody added this in 2.3.51)
- clear 'hw_regs_t hw' allocated from stack
- mark idepnp_init() with __init
- use ide_std_init_ports() instead of ide_setup_ports()
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

From: Geert Uytterhoeven <geert@linux-m68k.org>

The IDE sparse fixups cause 2 warnings (unused variables `val' and
`reg') on m68k and APUS.  However, the reason why this code was
commented out is gone.  So just remove the special case.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

They are only included from these drivers.

While at it:
- remove redundant ide_pci_device_t tables
- add DECLARE_CS_DEV() (cs5520)
- remove duplicate DISPLAY_SC1200_TIMINGS define (sc1200)
- remove unused SIIMAGE_BUFFERED_TASKFILE, SII_DEBUG
  and siiprintk() defines + add DECLARE_SII_DEV() (siimage)
- remove unused SLC90E66_DEBUG_DRIVE_INFO define (slc90e66)
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Extracted from the Debian kernel package
(original patch is from Herbert Xu).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

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

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

Thanks to Ivan Kokshaysky for spotting this.

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

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

into stevef95.austin.ibm.com:/home/stevef/linux-2.5cifs

Fix i_size corruption in case of overlapped readdir changing cached file size and local cached write extending file 

From: "Siddha, Suresh B" <suresh.b.siddha@intel.com>
From: "Kamble, Nitin A" <nitin.a.kamble@intel.com>

Fix use of uninitialized memory in x86-64 ioremap

This caused BUGs at bootup for some people.

Rename ->fill_sg hook to ->qc_prep, and call it unconditionally
(as opposed to ->fill_sg, which was called only when the
flag ATA_QCFLAG_SG was set).

Restruct default irq handler (used for many PCI IDE-like SATA
controllers) to obtain device status and acknowledge interrupts
a bit differently.

In an attempt to better attack the "ich5 screaming interrupt" problem,
acknowledge and clear the device's INTRQ by reading the Status register
_before_ ack'ing the controller's irq status.  This is a deviation
from how the Linux IDE driver acknowledges interrupts, but it may
be the best method, since the ICH5 appears to continue to assert
the interrupt bit in the BMDMA until the device INTRQ line is cleared.

Of course, SATA has no INTRQ line per se, so ICH5 essentially has
new interrupt behavior not seen before in the PCI IDE world, while
pretending that it's compatible with PCI IDE.  Sigh.

This change affects all SATA controllers (for which there are libata
drivers) except for sata_promise and sata_sx4.

PCI IDE DMA standard (or "bmdma") helper routines ata_bmdma_stop,
ata_bmdma_ack_irq, and ata_bmdma_status are added to linux/libata.h,
and used in libata-core.

There is a minor behavior change, such that, the Alt Status register
is read before acknowledging the bmdma interrupt.  This should be ok,
and furthermore there will be more significant behavior changes
in this area coming soon.

Signed-off-by: Steve French (sfrench@us.ibm.com)

Add proper __user annotation to selinux_shm_shmat.

From: Mika Kukkonen <mika@osdl.org>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add proper __user annotation to dummy_shm_shmat.
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Add proper __user annotation for shm_shmat hook in security.h.

From: Mika Kukkonen <mika@osdl.org>
Signed-off-by: Chris Wright <chrisw@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Some filesystems can get overflows when their link-count exceeds
65534.  This patch increases the kernels internal resolution for this
and also has a check for the old-system call paths to return and error
(-EOVERFLOW) as required (as suggested by Al Viro).
Signed-off-by: Chris Wedgwood <cw@f00f.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

This patch results in too much idle time under certain
loads, and while that is being looked into we're better
off just reverting the change.

Cset exclude: nickpiggin@yahoo.com.au[torvalds]|ChangeSet|20040605175839|02419

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

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

Since we want the probe phase to call other workqueues, this is
required to eliminate future deadlocks.

Other methods would include starting a single-shot thread just for
probing, but overall, using a separate thread for probing is pointless
since we are already in process context when we probe.

So, we simply call ata_bus_probe directly.