* Set IDE_HFLAG_SINGLE host flag in qd_probe() for QD6500 and QD6580
  with the second port disabled.

* Check for IDE_HFLAG_SINGLE in qd6580_port_init_devs() instead of
  using cached value of QD6580 Control register.

* Don't cache QD6580 Control register value in hwif->config_data
  (bits 8-15) and remove no longer needed QD_CONTROL() macro.

* Cache QD65xx base address in hwif->config_data (bits 8-15)
  instead of hwif->select_data.

* Set hwif->config_data in qd_probe() and remove qd_setup() helper.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

qd_select() checks itself whether timings should be reprogrammed so
remove superfluous qd_timing_ok() and always use ->selectproc method
(rename qd_select() to qd65xx_select() while at it).
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

[bart: ported it over Paolo's patch]
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Before:
total: 43 errors, 66 warnings, 2183 lines checked

After:
total: 0 errors, 36 warnings, 2192 lines checked

I didn't (and I don't plan to) fix the warnings:
WARNING: line over 80 characters

[bart: minor fixes, md5sum checked (modulo s/"ignore = NULL;"/"ignore;"/ fix)]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Before:
total: 34 errors, 14 warnings, 456 lines checked

After:
total: 0 errors, 8 warnings, 456 lines checked

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free, only a few
WARNING: line over 80 characters
are left.

Compile tested.

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free.
Compile tested.

[bart: minor fixes, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free, 2 warnings left.
Compile tested.

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Fix a lot of errors and warnings.
Compile tested.

[bart: some fixes, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Fix all the errors and a few warnings.
Compile tested.

[bart: some fixes, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Compile tested.

[bart: some fixes, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free.
Compile tested.

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Lot of errors and warnings removed.
Compile tested.

[bart: minor fixes, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error and warning free.
Compile tested.

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free.
Compile tested.

[bart: minor fixes, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free.
Compile tested.

[bart: fix issues noticed by Adrian Bunk & Cyrill Gorcunov, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free.
Compile tested.

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

About 300 errors and warnings fixed.
File is now error free.
Compile tested.

[bart: minor fixes, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free, only 1 warning left.
Compile tested.

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error and warning free.
Compile tested.

[bart: md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

File is now error free.
Compile tested.

[bart: minor fixes, md5sum checked]
Signed-off-by: Paolo Ciarrocchi <paolo.ciarrocchi@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

All host drivers now either set hwif->mmio or reserve continuous
I/O resources so remove no longer needed hwif->straight8 flag
and never reached code for 'hwif->straight8 == 0' case.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Sergei suggested that it shouldn't be necessary + it had no effect
anyway since ide_id_dma_bug() is called earlier in ide_tune_dma().

Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Tell IDE layer to not manage resources by setting
  hwif->mmio flag and request resources in falconide_init().

* Use request_mem_region() for resources reservation.

* Use driver name for resources reservation.

v2:
* Fix missing printk() parameter. (Noticed by Geert Uytterhoeven)

Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Michael Schmitz <schmitz@debian.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Tell IDE layer to not manage resources by setting
  hwif->mmio flag and request resources in m8xx_ide_init_ports().

* Use request_mem_region() for resources reservation.

* Use driver name for resources reservation.

Cc: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Make m8xx_ide_init_ports() return an error value.

* Update mpc8xx_ide_probe() to setup/probe only ports for which
  m8xx_ide_init_ports() succedded.

Cc: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Tell IDE layer to not manage resources by setting
  hwif->mmio flag and request resources in bastide_init().

* Use request_mem_region() for resources reservation.

* Use driver name for resources reservation.

Cc: Ben Dooks <support@simtec.co.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Tell IDE layer to not manage resources by setting hwif->mmio flag.

Cc: Mark Lord <mlord@pobox.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Tell IDE layer to not manage resources by always setting hwif->mmio flag
(resources are handled by a platform device).

Cc: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: Vitaly Bordug <vitb@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

include/linux/hdsmart.h is not used by the kernel and should therefore
be removed.
Signed-off-by: Adrian Bunk <bunk@kernel.org>
Cc: "Robert P. J. Day" <rpjday@crashcourse.ca>,
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This removes the internal ide-cd buffer and falls back to read-ahead block layer
capabilities. Thorough testing (cd burning, dvd read, raw read) gives with the
bufferless mode marginally better performance in addition to simplified code.

bufferless:

dd: reading `/dev/hdc': Input/output error
6238+0 records in
6238+0 records out
204406784 bytes (204 MB) copied, 259.891 s, 787 kB/s

real    4m21.598s
user    0m0.014s
sys     0m0.744s

with the old buffer (2.6.25-rc1):

dd: reading `/dev/hdc': Input/output error
6238+0 records in
6238+0 records out
204406784 bytes (204 MB) copied, 262.893 s, 778 kB/s

real    4m22.938s
user    0m0.009s
sys     0m0.771s
Signed-off-by: Borislav Petkov <petkovbb@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

There are no changes to the resulting drivers/ide/ide-disk.o binary file
(md5sum-s after and before the patch match).
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Factor out common code from proc_idedisk_read_smart_{thresholds,values}()
  to proc_idedisk_read_smart() helper.

* Rename proc_idedisk_read_smart_thresholds() to proc_idedisk_read_st()
  and proc_idedisk_read_smart_values() to proc_idedisk_read_sv().

There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

All modular users have been fixed to not reference ide_hwifs[] directly.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

There should be no functional changes caused by this patch.

v2:
* Fix comment (noticed by Sergei Shtylyov).

v3:
* Fix no initalization of idx in some case. (Johann Felix Soden)

Cc: Johann Felix Soden <johfel@users.sourceforge.net>
Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Add IDE_HFLAG_QD_2ND_PORT host flag to indicate the need of skipping
  first ide_hwifs[] slot for the second port of QD65xx controller.

* Handle this new host flag in ide_find_port_slot().

* Convert legacy VLB host drivers to use ide_find_port().

While at it:

* Fix couple of printk()-s in qd65xx host driver to not use hwif->name.

v2:
* Fix qd65xx.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Change ide_match_hwif() argument from 'u8 bootable' to
  'struct ide_port_info *d'.

* Move ide_match_hwif() to ide-probe.c from setup-pci.c and rename
  it to ide_find_port_slot().  Update some comments while at it.

* ide_find_port() can be now just a wrapper for ide_find_port_slot().

There should be no functional changes caused by this patch.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

No need for it nowadays so remove quirk code from ide_get_best_pio_mode()
and IDE_HFLAG_PIO_DOWNGRADE host flag.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

The kernel.h macro DIV_ROUND_UP performs the computation (((n) + (d) - 1) /
(d)) but is perhaps more readable.

An extract of the semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

#include <linux/kernel.h>

@depends on haskernel@
expression n,d;
@@

(
- (n + d - 1) / d
+ DIV_ROUND_UP(n,d)
|
- (n + (d - 1)) / d
+ DIV_ROUND_UP(n,d)
)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP((n),d)
+ DIV_ROUND_UP(n,d)

@depends on haskernel@
expression n,d;
@@

- DIV_ROUND_UP(n,(d))
+ DIV_ROUND_UP(n,d)
// </smpl>
Signed-off-by: Julia Lawall <julia@diku.dk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>