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>

"bootable" should be the default behavior so replace
IDE_HFLAG_BOOTABLE host flag with IDE_HFLAG_NON_BOOTABLE.

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

Return error value in qd_probe() and use it in qd65xx_init()
instead of checking ide_hwifs[].chipset.
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

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

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Replace 'unsigned char hwif_id' by 'ide_hwif_t *hwif' in struct scc_ports.
This allows us to remove ide_hwifs[] usage from scc_remove().

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

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Pass 'ide_drive_t *drive' to check_prefetch(), set_prefetch_mode(),
  program_drive_counts() and cmd640_set_mode().

* Remove no longer needed cmd_drives[].

* Inline setup_device_ptrs() helper in cmd640x_init().
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

There should be no functional changes caused by this patch.

Cc: Kou Ishizaki <kou.ishizaki@toshiba.co.jp>
Cc: Akira Iguchi <akira2.iguchi@toshiba.co.jp>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

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

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Dynamically allocate struct pmac_ide_hwif instances in pmac_ide_macio_attach()
  and pmac_ide_pci_attach(), then remove no longer needed pmac_ide[].

v2:
* Build fix from Kamalesh Babulal.

Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Cc: Maciej W. Rozycki <macro@linux-mips.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Remove no longer needed matching against I/O base and 'base' argument.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

* Remove no longer needed matching against I/O base and 'io_base' argument.

* Move printk() to the caller and remove 'name' argument.
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

This function didn't actually check if a given BAR is in I/O space because of
using the bogus PCI_BASE_ADDRESS_IO_MASK (which equals ~3) to test the resource
flags instead of IORESOURCE_IO -- fix this, make ide_hwif_configure() check the
results failing if necessary, and move the printk() call to the failure path.
Signed-off-by: Sergei Shtylyov <sshtylyov@ru.mvista.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

The 4drives should be a tristate, the following breakage occurs otherwise:

ERROR: "probe_4drives" [drivers/ide/ide-core.ko] undefined!

The following (compile tested) patch fixes it for me.
Signed-off-by: Frederik Deweerdt <frederik.deweerdt@gmail.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

	Arrgghhh...

Sorry about that, I'd been sure I'd folded that one, but it actually got
lost.  Please apply - that unbreaks execve().
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs-2.6:
  [PATCH] sanitize locate_fd()
  [PATCH] sanitize unshare_files/reset_files_struct
  [PATCH] sanitize handling of shared descriptor tables in failing execve()
  [PATCH] close race in unshare_files()
  [PATCH] restore sane ->umount_begin() API
  cifs: timeout dfs automounts +little fix.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

As requested by Sam Ravnborg: Remove Documentation/smart-config.txt.

It is outdated and has been (functionally) replaced by
Documentation/kbuild/*.txt.
Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

Commit 1a747ee0 ("locks: don't call ->copy_lock methods on return of
conflicting locks") changed fs/lockd/svclock.c to call
__locks_copy_lock() instead of locks_copy_lock(), but lockd can be built
as a module and __locks_copy_lock() is not exported, which causes a
build error

    ERROR: "__locks_copy_lock" [fs/lockd/lockd.ko] undefined!

with CONFIG_LOCKD=m.

Fix this by exporting __locks_copy_lock().
Signed-off-by: Roland Dreier <rolandd@cisco.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

* 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (49 commits)
  [POWERPC] Add zImage.iseries to arch/powerpc/boot/.gitignore
  [POWERPC] bootwrapper: fix build error on virtex405-head.S
  [POWERPC] 4xx: Fix 460GT support to not enable FPU
  [POWERPC] 4xx: Add NOR FLASH entries to Canyonlands and Glacier dts
  [POWERPC] Xilinx: of_serial support for Xilinx uart 16550.
  [POWERPC] Xilinx: boot support for Xilinx uart 16550.
  [POWERPC] celleb: Add support for PCI Express
  [POWERPC] celleb: Move miscellaneous files for Beat
  [POWERPC] celleb: Move a file for SPU on Beat
  [POWERPC] celleb: Move files for Beat mmu and iommu
  [POWERPC] celleb: Move files for Beat hvcall interfaces
  [POWERPC] celleb: Move the SCC related code for celleb
  [POWERPC] celleb: Move the files for celleb base support
  [POWERPC] celleb: Consolidate io-workarounds code
  [POWERPC] cell: Generalize io-workarounds code
  [POWERPC] Add CONFIG_PPC_PSERIES_DEBUG to enable debugging for platforms/pseries
  [POWERPC] Convert from DBG() to pr_debug() in platforms/pseries/
  [POWERPC] Register udbg console early on pseries LPAR
  [POWERPC] Mark udbg console as CON_ANYTIME, ie. callable early in boot
  [POWERPC] Set udbg_console index to 0
  ...

* 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6:
  [PATCH] Build fix for CONFIG_NUMA=y && CONFIG_SMP=n
  [IA64] fix bootmem regression on Altix

* 'for-linus' of git://git.o-hand.com/linux-rpurdie-leds:
  leds: Add default-on trigger
  leds: Document the context brightness_set needs
  leds: Add new driver for the LEDs on the Freecom FSG-3
  leds: Add support to leds with readable status
  leds: enable support for blink_set() platform hook in leds-gpio
  leds: Cleanup various whitespace and code style issues
  leds: disable triggers on brightness set
  leds: Add mail LED support for "Clevo D400P"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86-pat:
  generic: add ioremap_wc() interface wrapper
  /dev/mem: make promisc the default
  pat: cleanups
  x86: PAT use reserve free memtype in mmap of /dev/mem
  x86: PAT phys_mem_access_prot_allowed for dev/mem mmap
  x86: PAT avoid aliasing in /dev/mem read/write
  devmem: add range_is_allowed() check to mmap of /dev/mem
  x86: introduce /dev/mem restrictions with a config option

Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-fixes

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mingo/linux-2.6-sched-fixes:
  sched: fix share (re)distribution
  softlockup: fix NOHZ wakeup
  seqlock: livelock fix

* 'upstream-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jgarzik/libata-dev:
  pata_bf54x: decrease count first.
  sata_mv: re-enable hotplug, update TODO list
  sata_mv: leave SError bits untouched in mv_err_intr
  sata_mv: more interrupt handling rework
  sata_mv: tidy host controller interrupt handling
  sata_mv: simplify request/response queue handling
  sata_mv: simplify freeze/thaw bit-shift calculations
  sata_mv mask all interrupt coalescing bits
  sata_mv more cosmetics
  ata_piix: add Asus Eee 701 controller to short cable list
  libata-eh set tf flags in NCQ EH result_tf
  make sata_set_spd_needed() static
  make sata_print_link_status() static
  libata-acpi.c: remove unneeded #if's
  sata_nv: make hardreset return -EAGAIN on success
  ahci: retry enabling AHCI a few times before spitting out WARN_ON()
  libata: make WARN_ON conditions in ata_sff_hsm_move() more strict
  ATA/IDE: fix platform driver hotplug/coldplug
  sata_sis: SCR accessors return -EINVAL when requested SCR isn't available
  libata: functions with definition should not be extern

* git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb-2.6: (120 commits)
  usb: don't update devnum for wusb devices
  wusb: make ep0_reinit available for modules
  wusb: devices dont use a set address
  wusb: teach choose_address() about wireless devices
  wusb: add link wusb-usb device
  wusb: add authenticathed bit to usb_dev
  USB: remove unnecessary type casting of urb->context
  usb serial: more fixes and groundwork for tty changes
  USB: replace remaining __FUNCTION__ occurrences
  USB: usbfs: export the URB_NO_INTERRUPT flag to userspace
  USB: fix compile problems in ehci-hcd
  USB: ehci: qh_completions cleanup and bugfix
  USB: cdc-acm: signedness fix
  USB: add documentation about callbacks
  USB: don't explicitly reenable root-hub status interrupts
  USB: OHCI: turn off RD when remote wakeup is disabled
  USB: HCDs use the do_remote_wakeup flag
  USB: g_file_storage: ignore bulk-out data after invalid CBW
  USB: serial: remove endpoints setting checks from core and header
  USB: serial: remove unneeded number endpoints settings
  ...

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/dtor/input: (40 commits)
  Input: wacom - add support for Cintiq 20WSX
  Input: ucb1400_ts - IRQ probe fix
  Input: at32psif - update MODULE_AUTHOR with new email
  Input: mac_hid - add lockdep annotation to emumousebtn
  Input: i8042 - fix incorrect usage of strncpy and strncat
  Input: bf54x-keys - add infrastructure for keypad wakeups
  Input: add MODULE_ALIAS() to hotpluggable platform modules
  Input: drivers/char/keyboard.c - use time_after
  Input: fix ordering in joystick Makefile
  Input: wm97xx-core - support use as a wakeup source
  Input: wm97xx-core - use IRQF_SAMPLE_RANDOM
  Input: wm97xx-core - only schedule interrupt handler if not already scheduled
  Input: add Zhen Hua driver
  Input: aiptek - add support for Genius G-PEN 560 tablet
  Input: wacom - implement suspend and autosuspend
  Input: xpad - set proper buffer length for outgoing requests
  Input: omap-keypad - fix build warning
  Input: gpio_keys - irq handling cleanup
  Input: add PS/2 serio driver for AVR32 devices
  Input: put ledstate in the keyboard notifier
  ...