Commit Graph

6032 Commits

Author SHA1 Message Date
Tejun Heo
f5cda25729 libata: implement ata_host_alloc_pinfo() and ata_host_register()
Implement ata_host_alloc_pinfo() and ata_host_register().  These helpers
will be used in the following patches to adopt new init model.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:16:03 -04:00
Tejun Heo
f31871951b libata: separate out ata_host_alloc() and ata_host_register()
Reorganize ata_host_alloc() and its subroutines into the following
three functions.

* ata_host_alloc() : allocates host and its ports.  shost is not
  registered automatically.

* ata_scsi_add_hosts() : allocates and adds shosts associated with an
  ATA host.  Used by ata_host_register().

* ata_host_register() : takes a fully initialized ata_host structure
  and registers it to libata layer and probes it.

Only ata_host_alloc() and ata_host_register() are exported.
ata_device_add() is rewritten using the above functions.  This patch
does not introduce any observable behavior change.  Things worth
mentioning.

* print_id is assigned at registration time and LLDs are allowed to
  overallocate ports and reduce host->n_ports during initialization.
  ata_host_register() will throw away unused ports automatically.

* All SCSI host initialization stuff now resides in
  ata_scsi_add_hosts() in libata-scsi.c, where it should be.

* ipr is now the only user of ata_host_init().  Either kill it by
  converting ipr to use ata_host_alloc() and friends or rename and
  move it to libata-scsi.c

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:16:03 -04:00
Tejun Heo
ecef725323 libata: separate out ata_host_start()
Separate out ata_host_start() from ata_device_add().  ata_host_start()
calls ->port_start on each port if available and freezes the port.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:16:02 -04:00
Tejun Heo
4911487a34 libata: allocate ap separately from shost
Don't embed ap inside shost.  Allocate it separately and point it back
from shosts's hostdata.  This makes port allocation more flexible and
allows regular ATA and SAS share host alloc/init paths.

Signed-off-by: Tejun Heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:16:02 -04:00
Conke Hu
c65ec1c25d ahci.c: remove non-existing SB600 raid id (re-send)
SB600 RAID and SB600 SATA is the same controller and share the
same PCI ID 0x4380. There is no such PCI ID 0x4381.

    Signed-off-by: Conke Hu <conke.hu@gmail.com>
 ---------

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:16:02 -04:00
Mark Lord
5a5dbd18a7 libata: add support for READ/WRITE LONG
The READ/WRITE LONG commands are theoretically obsolete,
but the majority of drives in existance still implement them.

The WRITE_LONG and WRITE_LONG_ONCE commands are of particular
interest for fault injection testing -- eg. creating "media errors"
at specific locations on a disk.

The fussy bit is that these commands require a non-standard
sector size, usually 520 bytes instead of 512.

This patch adds support to libata for READ/WRITE LONG commands
issued via SG_IO/ATA_16.

Signed-off-by:  Mark Lord <mlord@pobox.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:16:01 -04:00
Jeff Garzik
8cdfb29c0c libata/IDE: remove combined mode quirk
Both old-IDE and libata should be able handle all controllers and
devices found using normal resource reservation methods.

This eliminates the awful, low-performing split-driver configuration
where old-IDE drove the PATA portion of a PCI device, in PIO-only mode,
and libata drove the SATA portion of the /same/ PCI device, in DMA mode.
Typically vendors would ship SATA hard drive / PATA optical
configuration, which would lend itself to slow (PIO-only) CD-ROM
performance.

For Intel users running in combined mode, it is now wholly dependent on
your driver choice (potentially link order, if you compile both drivers
in) whether old-IDE or libata will drive your hardware.

In either case, you will get full performance from both SATA and PATA
ports now, without having to pass a kernel command line parameter.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:59 -04:00
Alan Cox
a76b62ca70 libata: Change prototype of mode_filter to remove ata_port*
With Tejun having added adev->ap some time ago we can get rid of the
almost unused port being passed to mode filters. And while we are
doing filters, lets turn on the !IORDY filter as well.

Signed-off-by: Alan Cox <alan@redhat.com>

With some hand massaging from
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:58 -04:00
Alan
04351821b4 pata: expose set_mode method so it can be wrapped
This splits set_mode into do_set_mode and the wrapper so that a driver can
call the standard method inside its own.  This in theory also obsoletes
->post_set_mode().

Signed-off-by: Alan Cox <alan@redhat.com>
Cc: Jeff Garzik <jeff@garzik.org>
Cc: Tejun Heo <htejun@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:58 -04:00
Tejun Heo
ec04b07584 iomap: implement pcim_iounmap_regions()
Implement pcim_iounmap_regions() - the opposite of
pcim_iomap_regions().

Signed-off-by: Tejun heo <htejun@gmail.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:58 -04:00
Alan Cox
be0d18dff5 libata: cable detection fixes
2.6.21-rc has horrible problems with libata and PATA cable types (and
thus speeds). This occurs because Tejun fixed a pile of other bugs and
we now do cable detect enforcement for drive side detection properly.

Unfortunately we don't do the process around cable detection right. Tejun
identified the problem and pointed to the right Annex in the spec, this patch
implements the rest of the needed changes.

We add a ->cable_detect() method called after the identify
sequence which allows a host to do host side detection at this point
should it wish, or to modify the results of the drive side identify.

This separate ->cable_detect method also cleans up a lot of code because
many drivers have their own error_handler methods which really just set
the cable type.

If there is no ->cable_detect method the cable type is left alone so a
driver setting it earlier (eg because it has the SATA flags set or
because it uses the old error_handler approach) will still do the right
thing (or at least the same thing) as before.

This patch simply adds the cable_detect method and helpers it doesn't use
them but other follow up patches will (ie Adrian please don't submit
patches to unexport them ;))

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:55 -04:00
Alan
cd0d3bbcdd libata: dev_config does not need ap and adev passing
It used to be impossible to get from ata_device to ata_port but that is
no longer true. Various methods have been cleaned up over time but
dev_config still takes both and most users don't need both anyway. Tidy
this one up

Signed-off-by: Alan Cox <alan@redhat.com>
Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:55 -04:00
Jeff Garzik
43727fbc75 [libata] export sata_print_link_status()
To be used in sata_mv's exception handling code, and overall is a
generally useful function.

Signed-off-by: Jeff Garzik <jeff@garzik.org>
2007-04-28 14:15:54 -04:00
Linus Torvalds
f00546363f Merge git://git.infradead.org/mtd-2.6
* git://git.infradead.org/mtd-2.6: (46 commits)
  [MTD] [MAPS] drivers/mtd/maps/ck804xrom.c: convert pci_module_init()
  [MTD] [NAND] CM-x270 MTD driver
  [MTD] [NAND] Wrong calculation of page number in nand_block_bad()
  [MTD] [MAPS] fix plat-ram printk format
  [JFFS2] Fix compr_rubin.c build after include file elimination.
  [JFFS2] Handle inodes with only a single metadata node with non-zero isize
  [JFFS2] Tidy up licensing/copyright boilerplate.
  [MTD] [OneNAND] Exit loop only when column start with 0
  [MTD] [OneNAND] Fix access the past of the real oobfree array
  [MTD] [OneNAND] Update Samsung OneNAND official URL
  [JFFS2] Better fix for all-zero node headers
  [JFFS2] Improve read_inode memory usage, v2.
  [JFFS2] Improve failure mode if inode checking leaves unchecked space.
  [JFFS2] Fix cross-endian build.
  [MTD] Finish conversion mtd_blkdevs to use the kthread API
  [JFFS2] Obsolete dirent nodes immediately on unlink, where possible.
  Use menuconfig objects: MTD
  [MTD] mtd_blkdevs: Convert to use the kthread API
  [MTD] Fix fwh_lock locking
  [JFFS2] Speed up mount for directly-mapped NOR flash
  ...
2007-04-27 15:34:57 -07:00
Linus Torvalds
50f732ee63 Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/usb-2.6: (78 commits)
  USB: update MAINAINERS and CREDITS for Freescale USB driver
  USB: update gadget files for fsl_usb2_udc driver
  USB: add Freescale high-speed USB SOC device controller driver
  USB: quirk for broken suspend of IT8152F/G
  USB: iowarrior.c: timeouts too small in usb_control_msg calls
  USB: dell device id for option.c
  USB: Remove Huawei unusual_devs entry
  USB: CP2101 New Device IDs
  USB: add picdem device to ldusb
  usbfs micro optimitation
  USB: remove ancient/broken CRIS hcd
  usb ethernet gadget, workaround network stack API glitch
  USB: add "busnum" attribute for USB devices
  USB: cxacru: ADSL state management
  usbatm: Detect usb device shutdown and ignore failed urbs
  USB: Remove duplicate define of OHCI_QUIRK_ZFMICRO
  USB: BandRich BandLuxe HSDPA Data Card Driver
  USB gadget rndis: fix struct rndis_packet_msg_type unaligned bug
  USB Elan FTDI: check for driver registration status
  USB: sierra: add more checks on shutdown
  ...
2007-04-27 14:19:17 -07:00
Linus Torvalds
aa5bc2b58e Merge branch 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb
* 'master' of ssh://master.kernel.org/pub/scm/linux/kernel/git/mchehab/v4l-dvb: (184 commits)
  V4L/DVB (5563): Radio-maestro.c Replace radio_ioctl to use video_ioctl2
  V4L/DVB (5562): Radio-gemtek-pci.c Replace gemtek_pci_ioctl to use video_ioctl2
  V4L/DVB (5560): Ivtv: fix incorrect bitwise-and for command flags.
  V4L/DVB (5558): Opera: use 7-bit i2c addresses
  V4L/DVB (5557): Cafe_ccic: check return value of pci_enable_device
  V4L/DVB (5556): Radio-gemtek.c Replace gemtek_ioctl to use video_ioctl2
  V4L/DVB (5555): Radio-aimslab.c Replace rt_ioctl to use video_ioctl2
  V4L/DVB (5554): Fix: vidioc_g_parm were not zeroing the memory
  V4L/DVB (5553): Replace typhoon_do_ioctl to use video_ioctl2
  V4L/DVB (5552): Plan-b: Switch to refcounting PCI API
  V4L/DVB (5551): Plan-b: header change
  V4L/DVB (5550): Radio-sf16fmi.c Replace fmi_do_ioctl to use video_ioctl2
  V4L/DVB (5549): Radio-sf16fmr2.c Replace fmr2_do_ioctl to use video_ioctl2
  V4L/DVB (5548): Fix v4l2 buffer to the length
  V4L/DVB (5547): Add ENUM_FRAMESIZES and ENUM_FRAMEINTERVALS ioctls
  V4L/DVB (5546): Radio-terratec.c Replace tt_do_ioctl to use video_ioctl2
  V4L/DVB (5545): Saa7146: Release capture buffers on device close
  V4L/DVB (5544): Budget-av: Make inversion setting configurable, add KNC ONE V1.0 card
  V4L/DVB (5543): Tda10023: Add support for frontend TDA10023
  V4L/DVB (5542): Budget-av: Remove polarity switching of the clock for DVB-C
  ...
2007-04-27 14:18:45 -07:00
David Brownell
aa2ce5ca6b USB: <linux/usb/ch9.h> minor doc update
Minor doc update to <linux/usb/ch9.h> ... say where USB_DT_CS_* came
from and update the definitions to match how they're derived there.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:39 -07:00
Alan Stern
1941044aa9 USB: add "last_busy" field for use in autosuspend
This patch (as877) adds a "last_busy" field to struct usb_device, for
use by the autosuspend framework.  Now if an autosuspend call comes at
a time when the device isn't busy but hasn't yet been idle for long
enough, the timer can be set to exactly the desired value.  And we
will be ready to handle things like HID drivers, which can't maintain
a useful usage count and must rely on the time-of-last-use to decide
when to autosuspend.

The patch also makes some related minor improvements:

	Move the calls to the autosuspend condition-checking routine
	into usb_suspend_both(), which is the only place where it
	really matters.

	If the autosuspend timer is already running, don't stop
	and restart it.

	Replace immediate returns with gotos so that the optional
	debugging ouput won't be bypassed.

	If autoresume is disabled but the device is already awake,
	don't return an error for an autoresume call.

	Don't try to autoresume a device if it isn't suspended.
	(Yes, this undercuts the previous change -- so sue me.)

	Don't duplicate existing code in the autosuspend work routine.

	Fix the kerneldoc in usb_autopm_put_interface(): If an
	autoresume call fails, the usage counter is left unchanged.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:39 -07:00
Kay Sievers
9f8b17e643 USB: make usbdevices export their device nodes instead of using a separate class
o The "real" usb-devices export now a device node which can
  populate /dev/bus/usb.

o The usb_device class is optional now and can be disabled in the
  kernel config. Major/minor of the "real" devices and class devices
  are the same.

o The environment of the usb-device event contains DEVNUM and BUSNUM to
  help udev and get rid of the ugly udev rule we need for the class
  devices.

o The usb-devices and usb-interfaces share the same bus, so I used
  the new "struct device_type" to let these devices identify
  themselves. This also removes the current logic of using a magic
  platform-pointer.
  The name of the device_type is also added to the environment
  which makes it easier to distinguish the different kinds of devices
  on the same subsystem.

  It looks like this:
    add@/devices/pci0000:00/0000:00:1d.1/usb2/2-1
    ACTION=add
    DEVPATH=/devices/pci0000:00/0000:00:1d.1/usb2/2-1
    SUBSYSTEM=usb
    SEQNUM=1533
    MAJOR=189
    MINOR=131
    DEVTYPE=usb_device
    PRODUCT=46d/c03e/2000
    TYPE=0/0/0
    BUSNUM=002
    DEVNUM=004

This udev rule works as a replacement for usb_device class devices:
  SUBSYSTEM=="usb", ACTION=="add", ENV{DEVTYPE}=="usb_device", \
    NAME="bus/usb/$env{BUSNUM}/$env{DEVNUM}", MODE="0644"

Updated patch, which needs the device_type patches in Greg's tree.

I also got a bugzilla assigned for this. :)
  https://bugzilla.novell.com/show_bug.cgi?id=250659


Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:37 -07:00
Alan Stern
2add5229d7 USB: add power/level sysfs attribute
This patch (as874) adds another piece to the user-visible part of the
USB autosuspend interface.  The new power/level sysfs attribute allows
users to force the device on (with autosuspend off), force the device
to sleep (with autoresume off), or return to normal automatic operation.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:37 -07:00
Alan Stern
eaafbc3a8a USB: Allow autosuspend delay to equal 0
This patch (as867) adds an entry for the new power/autosuspend
attribute in Documentation/ABI/testing, and it changes the behavior of
the delay value.  Now a delay of 0 means to autosuspend as soon as
possible, and negative values will prevent autosuspend.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:35 -07:00
Oliver Neukum
bb74782e62 USB: additional structure from cdc spec
this adds another structure for CDC devices to cdc.h.

Signed-off-by: Oliver Neukum <oneukum@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 13:28:33 -07:00
Linus Torvalds
d868772fff Merge master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6
* master.kernel.org:/pub/scm/linux/kernel/git/gregkh/driver-2.6: (46 commits)
  dev_dbg: check dev_dbg() arguments
  drivers/base/attribute_container.c: use mutex instead of binary semaphore
  mod_sysfs_setup() doesn't return errno when kobject_add_dir() failure occurs
  s2ram: add arch irq disable/enable hooks
  define platform wakeup hook, use in pci_enable_wake()
  security: prevent permission checking of file removal via sysfs_remove_group()
  device_schedule_callback() needs a module reference
  s390: cio: Delay uevents for subchannels
  sysfs: bin.c printk fix
  Driver core: use mutex instead of semaphore in DMA pool handler
  driver core: bus_add_driver should return an error if no bus
  debugfs: Add debugfs_create_u64()
  the overdue removal of the mount/umount uevents
  kobject: Comment and warning fixes to kobject.c
  Driver core: warn when userspace writes to the uevent file in a non-supported way
  Driver core: make uevent-environment available in uevent-file
  kobject core: remove rwsem from struct subsystem
  qeth: Remove usage of subsys.rwsem
  PHY: remove rwsem use from phy core
  IEEE1394: remove rwsem use from ieee1394 core
  ...
2007-04-27 12:58:54 -07:00
Hans Verkuil
6816b1991f V4L/DVB (5419): Add comment how the speed field is interpreted.
Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:34 -03:00
Hans Verkuil
3700a90f05 V4L/DVB (5418): Speed is a signed 32-bit integer, not unsigned.
Negative speed values have to be allowed for reverse playback.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:33 -03:00
Hans Verkuil
43d0dfcfc6 V4L/DVB (5402): Add vsync_field to the union in video_event for VIDEO_EVENT_VSYNC
VIDEO_EVENT_VSYNC needs to tell the application which field it was that
received a VSYNC (odd/even/progressive). The vsync_field was added to the
union in video_event for this purpose.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:44:23 -03:00
Hans Verkuil
2435be11ae V4L/DVB (5307): Add support for the cx23415 MPEG decoding features.
The cx23415 adds some extra features that this DVB decoding API did
not support. This API has been expanded to support the required
features. Both source and binary backwards compatibility is kept
intact by these changes. So existing applications are not affected.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Ralph Metzler <rjkm@metzlerbros.de>
Signed-off-by: Oliver Endriss <o.endriss@gmx.de>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:43:28 -03:00
Hans Verkuil
3434eb7e14 V4L/DVB (5306): Add support for VIDIOC_G_CHIP_IDENT
VIDIOC_G_CHIP_IDENT improves debugging of card problems: it can be
used to detect which chips are on the board and based on that information
selected register dumps can be made, making it easy to debug complicated
media chips containing tens or hundreds of registers.
This ioctl replaces the internal VIDIOC_INT_G_CHIP_IDENT ioctl.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:43:27 -03:00
Hans Verkuil
b2787845fb V4L/DVB (5289): Add support for video output overlays.
Add V4L2_BUF_TYPE_VIDEO_OUTPUT_OVERLAY support.
Also add support for local and global alpha overlays.
Add new field enums V4L2_FIELD_INTERLACED_TB and V4L2_FIELD_INTERLACED_BT.
These changes are needed to support the ivtv On Screen Display features.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:43:21 -03:00
Hans Verkuil
206ebaf327 V4L/DVB (5272): Add V4L2_CAP_VIDEO_OUTPUT_POS capability
Add V4L2_CAP_VIDEO_OUTPUT_POS capability and x, y position coordinates
to struct v4l2_pix_format.
This is needed to support positioning the MPEG/YUV output of the cx23415.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:43:19 -03:00
Hans Verkuil
5eee72e884 V4L/DVB (5268): Add support for three new MPEG controls.
Added V4L2_CID_MPEG_AUDIO_MUTE, V4L2_CID_MPEG_VIDEO_MUTE and
V4L2_CID_MPEG_CX2341X_STREAM_INSERT_NAV_PACKETS controls together with
their implementation in the cx2341x module.

Signed-off-by: Hans Verkuil <hverkuil@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@infradead.org>
2007-04-27 15:43:18 -03:00
David Woodhouse
d1da4e50e5 Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:

	drivers/mtd/Kconfig

Signed-off-by: David Woodhouse <dwmw2@infradead.org>
2007-04-27 19:16:19 +01:00
Dan Williams
404d5b185b dev_dbg: check dev_dbg() arguments
Duplicate what Zach Brown did for pr_debug in commit
8b2a1fd1b3

[akpm@linux-foundation.org: fix a couple of things which broke]
Signed-off-by: Dan Williams <dan.j.williams@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:34 -07:00
Johannes Berg
a53c46dc82 s2ram: add arch irq disable/enable hooks
After some more discussion this patch replaces it:

From: Johannes Berg <johannes@sipsolutions.net>
Subject: suspend: add arch irq disable/enable hooks

For powermac, we need to do some things between suspending devices and
device_power_off, for example setting the decrementer. This patch
allows architectures to define arch_s2ram_{en,dis}able_irqs in their
asm/suspend.h to have control over this step.

Signed-off-by: Johannes Berg <johannes@sipsolutions.net>
Acked-by: Pavel Machek <pavel@ucw.cz>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:33 -07:00
David Brownell
075c177152 define platform wakeup hook, use in pci_enable_wake()
This defines a platform hook to enable/disable a device as a wakeup event
source.  It's initially for use with ACPI, but more generally it could be used
whenever enable_irq_wake()/disable_irq_wake() don't suffice.

The hook is called -- if available -- inside pci_enable_wake(); and the
semantics of that call are enhanced so that support for PCI PME# is no longer
needed.  It can now work for devices with "legacy PCI PM", when platform
support allows it.  (That support would use some board-specific signal for for
the same purpose as PME#.)

[akpm@linux-foundation.org: Make it compile with CONFIG_PM=n]
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Cc: Len Brown <lenb@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:33 -07:00
James Morris
057f6c019f security: prevent permission checking of file removal via sysfs_remove_group()
Prevent permission checking from being performed when the kernel wants to
unconditionally remove a sysfs group, by introducing an kernel-only variant
of lookup_one_len(), lookup_one_len_kern().

Additionally, as sysfs_remove_group() does not check the return value of
the lookup before using it, a BUG_ON has been added to pinpoint the cause
of any problems potentially caused by this (and as a form of annotation).

Signed-off-by: James Morris <jmorris@namei.org>
Cc: Nagendra Singh Tomar <nagendra_tomar@adaptec.com>
Cc: Tejun Heo <htejun@gmail.com>
Cc: Stephen Smalley <sds@tycho.nsa.gov>
Cc: Eric Paris <eparis@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:33 -07:00
Alan Stern
523ded71de device_schedule_callback() needs a module reference
This patch (as896b) fixes an oversight in the design of
device_schedule_callback().  It is necessary to acquire a reference to the
module owning the callback routine, to prevent the module from being
unloaded before the callback can run.

Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Cc: Satyam Sharma <satyam.sharma@gmail.com>
Cc: Neil Brown <neilb@suse.de>
Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:32 -07:00
Michael Ellerman
8447891fe8 debugfs: Add debugfs_create_u64()
I went to use this the other day, only to find it didn't exist.

It's a straight copy of the debugfs u32 code, then s/u32/u64/. A quick
test shows it seems to be working.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:31 -07:00
Adrian Bunk
3106d46f51 the overdue removal of the mount/umount uevents
This patch contains the overdue removal of the mount/umount uevents.

Signed-off-by: Adrian Bunk <bunk@stusta.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:31 -07:00
Greg Kroah-Hartman
4628803062 kobject core: remove rwsem from struct subsystem
It isn't used at all by the driver core anymore, and the few usages of
it within the kernel have now all been fixed as most of them were using
it incorrectly.  So remove it.

Now the whole struct subsys can be removed from the system, but that's
for a later patch...

Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:31 -07:00
Dmitry Torokhov
f89cbc399e Driver core: add suspend() and resume() to struct device_type
Driver core: add suspend() and resume() to struct device_type

In cases when there are devices of different types in the same class
we can't use class's implementation of suspend and resume methods and
we need to add them to struct device_type instead.

Also fix error handling in resume code (we should not try to call
class's resume method iof bus's resume method for the device failed.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:29 -07:00
Greg Kroah-Hartman
74e9f5fa15 Driver core: remove unneeded completion from driver release path
The completion in the driver release path is due to ancient history in
the _very_ early 2.5 days when we were not tracking the module reference
count of attributes.  It is not needed at all and can be removed.

Note, we now have an empty release function for the driver structure.
This is due to the fact that drivers are statically allocated in the
system at this point in time, something which I want to change in the
future.  But remember, drivers are really code, which is reference
counted by the module, unlike devices, which are data and _must_ be
reference counted properly in order to work correctly.


Cc: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:29 -07:00
Cornelia Huck
21c7f30b1d driver core: per-subsystem multithreaded probing
Make multithreaded probing work per subsystem instead of per driver.

It doesn't make much sense to probe the same device for multiple drivers in
parallel (after all, only one driver can bind to the device).  Instead, create
a probing thread for each device that probes the drivers one after another. 
Also make the decision to use multi-threaded probe per bus instead of per
device and adapt the pci code.

Signed-off-by: Cornelia Huck <cornelia.huck@de.ibm.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:28 -07:00
Kay Sievers
414264f959 Driver core: add name to device_type
If "name" of a device_type is specified, the uevent will
contain the device_type name in the DEVTYPE variable.
This helps userspace to distingiush between different types
of devices, belonging to the same subsystem.

Signed-off-by: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:28 -07:00
Dmitry Torokhov
621a1672f7 driver core: Use attribute groups in struct device_type
Driver core: use attribute groups in struct device_type

Attribute groups are more flexible than attribute lists
(an attribute list can be represented by anonymous group)
so switch struct device_type to use them.

Also rework attribute creation for devices so that they all
cleaned up properly in case of errors.

Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
Cc: Kay Sievers <kay.sievers@novell.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:28 -07:00
Kay Sievers
b8c5cec23d Driver core: udev triggered device-<>driver binding
We get two per-bus sysfs files:
  ls-l /sys/subsystem/usb
  drwxr-xr-x 2 root root    0 2007-02-16 16:42 devices
  drwxr-xr-x 7 root root    0 2007-02-16 14:55 drivers
  -rw-r--r-- 1 root root 4096 2007-02-16 16:42 drivers_autoprobe
  --w------- 1 root root 4096 2007-02-16 16:42 drivers_probe

The flag "drivers_autoprobe" controls the behavior of the bus to bind
devices by default, or just initialize the device and leave it alone.

The command "drivers_probe" accepts a bus_id and the bus tries to bind a
driver to this device.

Systems who want to control the driver binding with udev, switch off the
bus initiated probing:
  echo 0 > /sys/subsystem/usb/drivers_autoprobe
  echo 0 > /sys/subsystem/pcmcia/drivers_autoprobe
  ...

and initiate the probing with udev rules like:
  ACTION=="add", SUBSYSTEM=="usb", ATTR{subsystem/drivers_probe}="$kernel"
  ACTION=="add", SUBSYSTEM=="pcmcia", ATTR{subsystem/drivers_probe}="$kernel"
  ...

Custom driver binding can happen in earlier rules by something like:
  ACTION=="add", SUBSYSTEM=="usb", \
  ATTRS{idVendor}=="1234", ATTRS{idProduct}=="5678" \
  ATTR{subsystem/drivers/<custom-driver>/bind}="$kernel"

This is intended to solve the modprobe.conf mess with "install-rules", custom
bind/unbind-scripts and all the weird things people invented over the years.
It should also provide the functionality "libusual" was supposed to do.

With udev, one can just write a udev rule to drive all USB-disks at the
third port of USB-hub by the "ub" driver, and everything else by
usb-storage. One can also instruct udev to bind different wireless
drivers to identical cards - just selected by the pcmcia slot-number, and
whatever ...

To use the mentioned rules, it needs udev version 106, to be able to
write ATTR{}="$kernel" to sysfs files.

Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:28 -07:00
Kay Sievers
864062457a driver core: fix namespace issue with devices assigned to classes
- uses a kset in "struct class" to keep track of all directories
    belonging to this class
  - merges with the /sys/devices/virtual logic.
  - removes the namespace-dir if the last member of that class
    leaves the directory.

There may be locking or refcounting fixes left, I stopped when it seemed
to work with network and sound modules. :)

From: Kay Sievers <kay.sievers@vrfy.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
2007-04-27 10:57:28 -07:00
Ingo Molnar
39bc89fd40 make SysRq-T show all tasks again
show_state() (SysRq-T) developed the buggy habbit of not showing
TASK_RUNNING tasks.  This was due to the mistaken belief that state_filter
== -1 would be a pass-through filter - while in reality it did not let
TASK_RUNNING == 0 p->state values through.

Fix this by restoring the original '!state_filter means all tasks'
special-case i had in the original version.  Test-built and test-booted on
i686, SysRq-T now works as intended.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-27 10:46:51 -07:00
Daniel Walker
20f09390b2 seqlocks: trivial remove weird whitespace
Signed-off-by: Daniel Walker <dwalker@mvista.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-04-27 10:44:42 -07:00
Linus Torvalds
b928ed5618 Merge branch 'for-linus' of git://git.infradead.org/ubi-2.6
* 'for-linus' of git://git.infradead.org/ubi-2.6:
  UBI: remove unused variable
  UBI: add me to MAINTAINERS
  JFFS2: add UBI support
  UBI: Unsorted Block Images
2007-04-27 10:42:35 -07:00