Check driver layer return values in IDE core.

Signed-off-by: Randy Dunlap <rdunlap@xenotime.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Sergey Vlasov reported that his "FUJITSU MCC3064AP, ATAPI OPTICAL drive"
pops up as UNKNOWN in /proc/ide/*/media .

Closes #4145.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Signed-off-by: Jörn Engel <joern@wohnheim.fh-wedel.de>
Signed-off-by: Adrian Bunk <bunk@stusta.de>

- converted to platform bus
- removed pci dependencies
- removed virt_to_phys/phys_to_virt calls
    
System now can root off of a disk.

Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/Documentation/mips/AU1xxx_IDE.README b/Documentation/mips/AU1xxx_IDE.README
new file mode 100644

* add ide_bus_match() and export ide_bus_type
* split ide_remove_driver_from_hwgroup() out of ide_unregister()
* move device cleanup from ide_unregister() to drive_release_dev()
* convert ide_driver_t->name to driver->name
* convert ide_driver_t->{attach,cleanup} to driver->{probe,remove}
* remove ide_driver_t->busy as ide_bus_type->subsys.rwsem
  protects against concurrent ->{probe,remove} calls
* make ide_{un}register_driver() void as it cannot fail now
* use driver_{un}register() directly, remove ide_{un}register_driver()
* use device_register() instead of ata_attach(), remove ata_attach()
* add proc_print_driver() and ide_drivers_show(), remove ide_drivers_op
* fix ide_replace_subdriver() and move it to ide-proc.c
* remove ide_driver_t->drives, ide_drives and drives_lock
* remove ide_driver_t->drivers, drivers and drivers_lock
* remove ide_drive_t->driver and DRIVER() macro

Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@elka.pw.edu.pl>

Kernel 2.6 has an ide proc destroy error. Run #modprobe ide-core and
#rmmod ide-core, then kernel will dump stack information like below.

**********Log******************
Badness in remove_proc_entry at fs/proc/generic.c:693

Call Trace:
 [<a0000001000117e0>] show_stack+0x80/0xa0
                                sp=3De0000003e05dfbe0 =
bsp=3De0000003e05d0ea8
 [<a0000001000120b0>] dump_stack+0x30/0x60
                                sp=3De0000003e05dfdb0 =
bsp=3De0000003e05d0e90
 [<a000000100183090>] remove_proc_entry+0x530/0x540
                                sp=3De0000003e05dfdb0 =
bsp=3De0000003e05d0e20
 [<a000000221cbd280>] proc_ide_destroy+0x120/0x140 [ide_core]
                                sp=3De0000003e05dfdc0 =
bsp=3De0000003e05d0df0
 [<a000000221ca65f0>] cleanup_module+0x50/0xa0 [ide_core]
                                sp=3De0000003e05dfdc0 =
bsp=3De0000003e05d0dd0
 [<a0000001000a9e10>] sys_delete_module+0x390/0x580
                                sp=3De0000003e05dfdc0 =
bsp=3De0000003e05d0d50
 [<a00000010000af40>] ia64_ret_from_syscall+0x0/0x20
                                sp=3De0000003e05dfe30 =
bsp=3De0000003e05d0d50
 [<a000000000010640>] _stext+0xffffffff00010640/0x400
                                sp=3De0000003e05e0000 =
bsp=3De0000003e05d0d50

Signed-off-by: Zhang Yanmin <yanmin.zhang@intel.com>
Cc: Bartlomiej Zolnierkiewicz <B.Zolnierkiewicz@elka.pw.edu.pl>
Cc: Greg KH <greg@kroah.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!