Skip to content

L
linux
Switch branch/tag
  1. 27 Jun, 2008 2 commits
    • Kenji Kaneshige's avatar
      pciehp: remove needless command completed interrupt setting · 3aa50c44
      Kenji Kaneshige authored 
      Currently, pciehp driver enables command completed interrupt as follows.

(1) Don't enable at initialization.
(2) Enable command completed interrupt whenever pciehp issues a
    command, if the command doesn't attempt to disable the interrupt.
(3) Disable command completed interrupt at driver unloading.

Once we enable command completed interrupt, we don't need to re-enable
it for every command. So we can simplify above steps as follows:

(1) Enable command completed interrupt at initialization.
(2) No special sequence for command completed interrupt.
(3) Disable command completed interrupt at driver unloading.
Signed-off-by: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
      3aa50c44
    • Kenji Kaneshige's avatar
      pciehp: fix interrupt initialization · c4635eb0
      Kenji Kaneshige authored 
      Current pciehp driver's intialization sequence is as follows:

(1) initialize controller data structure
(2) install interrupt handler
(3) enable software notification
(4) initialize controller specific slot data structure
(5) initialize generic slot data structure and register it to pci hotplug core

The interrupt handler of pciehp assumes that controller specific slot
data structure is already initialized. However, it is installed at (2)
before initializing controller specific slot data structure at
(4). Because of this, pciehp driver cannot handle the following cases
properly.

- If devices that shares IRQ with pciehp raise interrupts between (2) and (4).
- If hotplug events (e.g. MRL open) happen between (3) and (4).

We already have a workaround for this problem ("pciehp: fix NULL
dereference in interrupt handler: dbd79aed).
But we still need fundamental fix.

This patch fix the problem by changing the initilization sequence as follows:

(1) initialize controller data structure
(2) initialize controller specific slot data structure
(3) install interrupt handler
(4) enable software notification
(5) initialize generic slot data structure and register it to pci hotplug core
Signed-off-by: default avatarKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
Acked-by: default avatarAlex Chiang <achiang@hp.com>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
      c4635eb0
  3. 25 Jun, 2008 10 commits
  5. 16 Jun, 2008 1 commit
  7. 12 Jun, 2008 2 commits
    • Rafael J. Wysocki's avatar
      Suspend-related patches for 2.6.27 · d8f3de0d
      Rafael J. Wysocki authored 
      ACPI PM: Add possibility to change suspend sequence

There are some systems out there that don't work correctly with
our current suspend/hibernation code ordering.  Provide a workaround
for these systems allowing them to pass 'acpi_sleep=old_ordering' in
the kernel command line so that it will use the pre-ACPI 2.0 ("old")
suspend code ordering.

Unfortunately, this requires us to add a platform hook to the
resuming of devices for recovering the platform in case one of the
device drivers' .suspend() routines returns error code.  Namely,
ACPI 1.0 specifies that _PTS should be called before suspending
devices, but _WAK still should be called before resuming them in
order to undo the changes made by _PTS.  However, if there is an
error during suspending devices, they are automatically resumed
without returning control to the PM core, so the _WAK has to be
called from within device_resume() in that cases.

The patch also reorders and refactors the ACPI suspend/hibernation
code to avoid duplication as far as reasonably possible.
Signed-off-by: default avatarRafael J. Wysocki <rjw@sisk.pl>
Acked-by: default avatarPavel Machek <pavel@suse.cz>
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
      d8f3de0d
    • Jesse Barnes's avatar
      Merge branch 'suspend' of... · 53eb2fbe
      Jesse Barnes authored 
      Merge branch 'suspend' of git://git.kernel.org/pub/scm/linux/kernel/git/lenb/linux-acpi-2.6 into linux-next
      53eb2fbe
  9. 11 Jun, 2008 3 commits
  11. 10 Jun, 2008 22 commits
GitLab Nexedi Edition | About GitLab | About Nexedi | 沪ICP备2021021310号-2 | 沪ICP备2021021310号-7