1. 30 5月, 2008 13 次提交
    • R
      USB: add another scanner quirk · 598eff6d
      René Rebe 提交于
      Like the HP53{00,70} scanner other devices of the OEM Avision require
      the USB_QUIRK_STRING_FETCH_255 to correct set a configuration with
      "recent" Linux kernels.
      Signed-off-by: NRené Rebe <rene@exactcode.de>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      598eff6d
    • J
      USB: Add support for ROKR W5 in unusual_devs.h · 2a8bc9e7
      Javier Smaldone 提交于
      This patch adds support for rev 2 of an existing unusual_devs entry
      enabling ROKR W5s to work. Greg, please apply.
      
      From: Javier Smaldone <javier@smaldone.com.ar>
      Signed-off-by: NPhil Dibowitz <phil@ipom.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      2a8bc9e7
    • P
      USB: Fix M600i unusual_devs entry · c5f23b0e
      Phil Dibowitz 提交于
      It turns out that the unusual_devs entry for the Motorola M600i needs
      another flag. This patch adds it. Thanks to Atte André Jensen
      <atte@ballbreaker.dk>.
      Signed-off-by: NPhil Dibowitz <phil@ipom.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      c5f23b0e
    • A
      USB: usb-storage: unusual_devs update for Cypress ATACB · c7257bd2
      Alan Stern 提交于
      This patch (as1101) updates the unusual_devs entry for the Cypress
      ATACB pass-through.  The protocol field is changed from US_PR_BULK to
      US_PR_DEVICE, since the Cypress devices already set bInterfaceProtocol
      to Bulk-only.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      c7257bd2
    • A
      USB: EHCI: fix performance regression · fa38dfcc
      Alan Stern 提交于
      This patch (as1099) fixes a performance regression in ehci-hcd.  The
      fundamental problem is that queue headers get removed from the
      schedule too quickly, since the code checks for a counter advancing
      rather than making an actual time-based check.  The latency involved
      in removing the queue header and then relinking it can severely
      degrade certain kinds of workloads.
      
      The patch replaces a simple counter with a timestamp derived from the
      controller's uframe value.  In addition, the delay for unlinking an
      idle queue header is increased from 5 ms to 10 ms; since some
      controllers (nVidia) have a latency of up to 1 ms for unlinking, this
      reduces the relative impact from 20% to 10%.
      
      Finally, a logical error left over from the IAA watchdog-timer
      conversion is corrected.  Now the driver will always either unlink an
      idle queue header or set up a timer to unlink it later.  The old code
      would sometimes fail to do either.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Cc: David Brownell <david-b@pacbell.net>
      Cc: Leonid <leonidv11@gmail.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      fa38dfcc
    • A
      USB: EHCI: fix bug in Iso scheduling · b40e43fc
      Alan Stern 提交于
      This patch (as1098) changes the way ehci-hcd schedules its periodic
      Iso transfers.  That the current scheduling code is wrong is clear on
      the face of it: Sometimes it returns -EL2NSYNC (meaning that an URB
      couldn't be scheduled because it was submitted too late), but it does
      this even when the URB_ISO_ASAP flag is set (meaning the URB should be
      scheduled as soon as possible).
      
      The new code properly implements as-soon-as-possible scheduling,
      assigning the next unexpired slot as the URB's starting point.  It
      also is more careful about checking for Iso URB completion: It doesn't
      bother to check for activity during frames that are already over,
      and it allows for the possibility that some of the URB's packets may
      have raced the hardware when they were submitted and so never got used
      (the packet status is set to -EXDEV).
      
      This fixes problems several people have experienced with USB video
      applications.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      b40e43fc
    • A
      USB: EHCI: fix remote-wakeup regression · d1f114d1
      Alan Stern 提交于
      This patch (as1097) fixes a bug in the remote-wakeup handling in
      ehci-hcd.  The driver currently does not keep track of whether the
      change-suspend feature is enabled for each port; the feature is
      automatically reset the first time it is read.  But recent changes to
      the hub driver require that the feature be read at least twice in
      order to work properly.
      
      A bit-vector is added for storing the change-suspend feature values.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      d1f114d1
    • A
      USB: EHCI: suppress unwanted error messages · 3a31155c
      Alan Stern 提交于
      This patch (as1096) fixes an annoying problem: When a full-speed or
      low-speed device is plugged into an EHCI controller, it fails to
      enumerate at high speed and then is handed over to the companion
      controller.  But usbcore logs a misleading and unwanted error message
      when the high-speed enumeration fails.
      
      The patch adds a new HCD method, port_handed_over, which asks whether
      a port has been handed over to a companion controller.  If it has, the
      error message is suppressed.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      CC: David Brownell <david-b@pacbell.net>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      3a31155c
    • A
      USB: EHCI: fix up root-hub TT mess · a8e51775
      Alan Stern 提交于
      This patch (as1095) cleans up the HCD glue and several of the EHCI
      bus-glue files.  The ehci->is_tdi_rh_tt flag is redundant, since it
      means the same thing as the hcd->has_tt flag, so it is removed and the
      other flag used in its place.
      
      Some of the bus-glue files didn't get the relinquish_port method added
      to their hc_driver structures.  Although that routine currently
      doesn't do anything for controllers with an integrated TT, in the
      future it might.  So the patch adds it where it is missing.
      
      Lastly, some of the bus-glue files have erroneous entries for their
      hc_driver's suspend and resume methods.  These method pointers are
      specific to PCI and shouldn't be used otherwise.
      
      (The patch also includes an invisible whitespace fix.)
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Acked-by: NDavid Brownell <dbrownell@users.sourceforge.net>
      a8e51775
    • A
      USB: add all configs to the "descriptors" attribute · 217a9081
      Alan Stern 提交于
      This patch (as1094) changes the output of the "descriptors" binary
      attribute.  Now it will contain the device descriptor followed by all
      the configuration descriptors, not just the descriptor for the current
      config.
      
      Userspace libraries want to have access to the kernel's cached
      descriptor information, so they can learn about device characteristics
      without having to wake up suspended devices.  So far the only user of
      this attribute is the new libusb-1.0 library; thus changing its
      contents shouldn't cause any problems.
      
      This should be considered for 2.6.26, if for no other reason than to
      minimize the range of releases in which the attribute contains only the
      current config descriptor.
      
      Also, it doesn't hurt that the patch removes the device locking --
      which was formerly needed in order to know for certain which config was
      indeed current.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      217a9081
    • A
      USB: fix possible deadlock involving sysfs attributes · e16362a0
      Alan Stern 提交于
      There is a potential deadlock when the usb_generic driver is unbound
      from a device.  The problem is that generic_disconnect() is called
      with the device lock held, and it removes a bunch of device attributes
      from sysfs.  If a user task happens to be running an attribute method
      at the time, the removal will block until the method returns.  But at
      least one of the attribute methods (the store routine for power/level)
      needs to acquire the device lock!
      
      This patch (as1093) eliminates the deadlock by moving the calls to
      create and remove the sysfs attributes from the usb_generic driver
      into usb_new_device() and usb_disconnect(), where they can be invoked
      without holding the device lock.
      
      Besides, the other sysfs attributes are created when the device is
      registered and removed when the device is unregistered.  So it seems
      only fitting for the extra attributes to be created and removed at the
      same time.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      e16362a0
    • M
      USB: Firmware loader driver for USB Apple iSight camera · 62d104d0
      Matthew Garrett 提交于
      Uninitialised Apple iSight drivers present with a distinctive USB ID.
      Once firmware has been uploaded, they disconnect and reconnect with a
      new ID. At this point they can be driven by the uvcvideo driver. As this
      is unique to the Apple cameras and not functionality shared by any other
      UVC devices, it makes sense to provide the firmware loading
      functionality in a separate driver. This driver will read an isight.fw
      file extracted from the Apple driver using the tools at
      http://bersace03.free.fr/ift/ and upload it to the camera. It will also
      handle the case where the device loses its firmware during hibernation
      and must have it reloaded.
      Signed-off-by: NMatthew Garrett <mjg@redhat.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      62d104d0
    • R
      USB: FTDI_SIO : Add support for Matrix Orbital PID Range · ebb3770c
      Ray Molenkamp 提交于
      This patch adds support for the range of PIDs
      that have been allocated for FTDI based devices
      at Matrix Orbital.
      
      A small number of units have been shipped early 2008
      with a faulty USB Descriptor.  Products that may have
      this issue have been marked with the existing quirk to
      work around the problem.
      Signed-off-by: NR. Molenkamp <rmolenkamp@matrixorbital.ca>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      ebb3770c
  2. 29 5月, 2008 1 次提交
  3. 28 5月, 2008 19 次提交
    • L
      Merge branch 'for-linus' of git://git.kernel.dk/linux-2.6-block · b4412323
      Linus Torvalds 提交于
      * 'for-linus' of git://git.kernel.dk/linux-2.6-block:
        cfq-iosched: fix RCU problem in cfq_cic_lookup()
        block: make blktrace use per-cpu buffers for message notes
        Added in elevator switch message to blktrace stream
        Added in MESSAGE notes for blktraces
        block: reorder cfq_queue to save space on 64bit builds
        block: Move the second call to get_request to the end of the loop
        splice: handle try_to_release_page() failure
        splice: fix sendfile() issue with relay
      b4412323
    • D
      FRV: Specify the minimum slab/kmalloc alignment · dc1d60a0
      David Howells 提交于
      Specify the minimum slab/kmalloc alignment to be 8 bytes.  This fixes a
      crash when SLOB is selected as the memory allocator.  The FRV arch needs
      this so that it can use the load- and store-double instructions without
      faulting.  By default SLOB sets the minimum to be 4 bytes.
      Signed-off-by: NDavid Howells <dhowells@redhat.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      dc1d60a0
    • V
      MN10300: Fix typo in header guard · 5e55843b
      Vegard Nossum 提交于
      Fix a typo in the header guard of asm/ipc.h.
      Signed-off-by: NVegard Nossum <vegard.nossum@gmail.com>
      Signed-off-by: NDavid Howells <dhowells@redhat.com>
      Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>
      5e55843b
    • J
      cfq-iosched: fix RCU problem in cfq_cic_lookup() · d6de8be7
      Jens Axboe 提交于
      cfq_cic_lookup() needs to properly protect ioc->ioc_data before
      dereferencing it and also exclude updaters of ioc->ioc_data as well.
      
      Also add a number of comments documenting why the existing RCU usage
      is OK.
      
      Thanks a lot to "Paul E. McKenney" <paulmck@linux.vnet.ibm.com> for
      review and comments!
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      d6de8be7
    • J
      block: make blktrace use per-cpu buffers for message notes · 64565911
      Jens Axboe 提交于
      Currently it uses a single static char array, but that risks
      being corrupted when multiple users issue message notes at the
      same time. Make the buffers dynamically allocated when the trace
      is setup and make them per-cpu instead.
      
      The default max message size of 1k is also very large, the
      interface is mainly for small text notes. So shrink it to 128 bytes.
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      64565911
    • A
    • A
      Added in MESSAGE notes for blktraces · 9d5f09a4
      Alan D. Brunelle 提交于
      Allows messages to be inserted into blktrace streams.
      Signed-off-by: NAlan D. Brunelle <alan.brunelle@hp.com>
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      9d5f09a4
    • R
      block: reorder cfq_queue to save space on 64bit builds · be754d2c
      Richard Kennedy 提交于
      saves 8 bytes of padding & increases objects/slab from 30 to 32 on my
      AMD64 config
      Signed-off-by: NRichard Kennedy <richard@rsk.demon.co.uk>
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      be754d2c
    • Z
      block: Move the second call to get_request to the end of the loop · 05caf8db
      Zhang, Yanmin 提交于
      In function get_request_wait, the second call to get_request could be
      moved to the end of the while loop, because if the first call to
      get_request fails, the second call will fail without sleep.
      Signed-off-by: NZhang Yanmin <yanmin.zhang@intel.com>
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      05caf8db
    • J
      splice: handle try_to_release_page() failure · ca39d651
      Jens Axboe 提交于
      splice currently assumes that try_to_release_page() always suceeds,
      but it can return failure. If it does, we cannot steal the page.
      
      Acked-by: Mingming Cao <cmm@us.ibm.com
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      ca39d651
    • T
      splice: fix sendfile() issue with relay · a82c53a0
      Tom Zanussi 提交于
      Splice isn't always incrementing the ppos correctly, which broke
      relay splice.
      Signed-off-by: NTom Zanussi <zanussi@comcast.net>
      Tested-by: NDan Williams <dan.j.williams@intel.com>
      Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
      a82c53a0
    • L
      Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6 · 1ec7d99c
      Linus Torvalds 提交于
      * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jbarnes/pci-2.6:
        pciehp: add message about pciehp_slot_with_bus option
        pci hotplug core: add check of duplicate slot name
        pciehp: move msleep after power off
        pciehp: poll cmd completion if hotplug interrupt is disabled
        pciehp: fix slow probing
        pciehp: fix NULL dereference in interrupt handler
        shpchp: add message about shpchp_slot_with_bus option
        PCI: don't enable ASPM on devices with mixed PCIe/PCI functions
      1ec7d99c
    • K
      pciehp: add message about pciehp_slot_with_bus option · 9e4f2e8d
      Kenji Kaneshige 提交于
      Some (broken?) platform assign the same slot name to multiple hotplug
      slots. On such system, slot initialization would fail because of name
      collision. The pciehp driver already have a "slot_with_bus" module
      option which adds the bus number into the slot name. This patch adds
      the message about this module option that will be displayed when slot
      name collision is detected.
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      9e4f2e8d
    • K
      pci hotplug core: add check of duplicate slot name · a86161b3
      Kenji Kaneshige 提交于
      Fix the following errors reported by Jan C. Nordholz in
      http://bugzilla.kernel.org/show_bug.cgi?id=10751.
      
      kobject_add_internal failed for 2 with -EEXIST, don't try to register things with the same name in the same directory.
      Pid: 1, comm: swapper Tainted: G        W 2.6.26-rc3 #1
       [<c0266980>] kobject_add_internal+0x140/0x190
       [<c0266afd>] kobject_init_and_add+0x2d/0x40
       [<c027bc91>] pci_hp_register+0x81/0x2f0
       [<c027fd07>] pciehp_probe+0x1a7/0x470
       [<c01b3b84>] sysfs_add_one+0x44/0xa0
       [<c01b3c1f>] sysfs_addrm_start+0x3f/0xb0
       [<c01b497a>] sysfs_create_link+0x8a/0xf0
       [<c0279570>] pcie_port_probe_service+0x50/0x80
       [<c02e0545>] driver_sysfs_add+0x55/0x70
       [<c02e0662>] driver_probe_device+0x82/0x180
       [<c02e07cc>] __driver_attach+0x6c/0x70
       [<c02dfe0a>] bus_for_each_dev+0x3a/0x60
       [<c05db2d0>] pcied_init+0x0/0x80
       [<c02e04e6>] driver_attach+0x16/0x20
       [<c02e0760>] __driver_attach+0x0/0x70
       [<c02e0341>] bus_add_driver+0x1a1/0x220
       [<c05db2d0>] pcied_init+0x0/0x80
       [<c02e09cd>] driver_register+0x4d/0x120
       [<c05db050>] ibm_acpiphp_init+0x0/0x190
       [<c0125aab>] printk+0x1b/0x20
       [<c05db2d0>] pcied_init+0x0/0x80
       [<c05db2de>] pcied_init+0xe/0x80
       [<c05c751a>] kernel_init+0x10a/0x300
       [<c0120138>] schedule_tail+0x18/0x50
       [<c0103b9a>] ret_from_fork+0x6/0x1c
       [<c05c7410>] kernel_init+0x0/0x300
       [<c05c7410>] kernel_init+0x0/0x300
       [<c010485b>] kernel_thread_helper+0x7/0x1c
       =======================
      pci_hotplug: Unable to register kobject '2'<3>pciehp: pci_hp_register failed with error -22
      
      Slot with the same name can be registered multiple times if shpchp or
      pciehp driver is loaded after acpiphp is loaded because ACPI based
      hotplug driver and Native OS hotplug driver trying to handle the same
      physical slot. In this case, current pci_hotplug core will call
      kobject_init_and_add() muliple time with the same name. This is the
      cause of this problem. To fix this problem, this patch adds the check
      into pci_hp_register() to see if the slot with the same name.
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      a86161b3
    • K
      pciehp: move msleep after power off · 0711c70e
      Kenji Kaneshige 提交于
      According to the PCI Express specification, we must wait for at least
      1 second after turning power off before taking any action that relies
      on power having been removed from the slot/adapter. For this, current
      pciehp wait for 1 second after issuing the power off command in
      hpc_power_off_slot() function. But waiting for 1 second in
      hpc_power_off_slot() can make pciehp probing slow-down because pciehp
      probe code calls hpc_power_off_slot() if the slot is not occupied just
      in case. We don't need to wait for 1 second at the pciehp probe time
      because there is no action on that empty slot. So move 1 second wait
      from hpc_power_off_slot() to the caller of hpc_power_off_slot().
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      0711c70e
    • K
      pciehp: poll cmd completion if hotplug interrupt is disabled · 6592e02a
      Kenji Kaneshige 提交于
      Fix improper long wait for command completion in pciehp probing.
      
      As described in PCI Express specification, software notification is
      not generated if the command that occurs as a result of a write to the
      Slot Control register that disables software notification of command
      completed events. Since pciehp driver doesn't take it into account,
      such command is issued in pciehp probing, and it causes improper long
      wait for command completion.
      
      This patch changes the pciehp driver to take such command into
      account.
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      6592e02a
    • K
      pciehp: fix slow probing · 5808639b
      Kenji Kaneshige 提交于
      Fix the "pciehp probing slow" problem reported from Jan C. Nordholz in
      http://bugzilla.kernel.org/show_bug.cgi?id=10751.
      
      The command completed bit in Slot Status register applies only to
      commands issued to control the attention indicator, power indicator,
      power controller, or electromechanical interlock. However, writes to
      other parts of the Slot Control register would end up writing to the
      control fields. Hence, any write to Slot Control register is
      considered as a command. However, if the controller doesn't support
      any of attention indicator, power indicator, power controller and
      electromechanical interlock, command completed bit would not set in
      writing to Slot Control register. In this case, we should not wait for
      command completed bit set, otherwise all commands would be considered
      not completed in timeout seconds (1 sec.).
      
      The cause of the problem is pciehp driver didn't take this situation
      into account. This patch changes pciehp to take it into account. This
      patch also add the check for "No Command Completed Support" bit in
      Slot Capability register. If it is set, we should not wait for command
      completed bit set as well.
      
      This problem seems to be revealed by the commit
      c27fb883 that fixed the bug that
      pciehp did not wait for command completed properly (pciehp just
      ignored the command completion event).
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      5808639b
    • K
      pciehp: fix NULL dereference in interrupt handler · dbd79aed
      Kenji Kaneshige 提交于
      Fix the following NULL dereference problem reported from Pierre Ossman
      and Ingo Molnar.
      
      pciehp: HPC vendor_id 8086 device_id 27d0 ss_vid 0 ss_did 0
      pciehp: pciehp_find_slot: slot (device=0x0) not found
      BUG: unable to handle kernel NULL pointer dereference at 0000000000000070
      IP: [<ffffffff80494a8b>] pciehp_handle_presence_change+0x7e/0x113
      PGD 0
      Oops: 0000 [1]
      CPU 0
      Modules linked in:
      Pid: 1, comm: swapper Tainted: G        W 2.6.26-rc3-sched-devel.git-00001-g2b99b26-dirty #170
      RIP: 0010:[<ffffffff80494a8b>]  [<ffffffff80494a8b>] pciehp_handle_presence_change+0x7e/0x113
      RSP: 0000:ffff81003f83fbb0  EFLAGS: 00010046
      RAX: 0000000000000039 RBX: 0000000000000000 RCX: 0000000000000000
      RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000046
      RBP: ffff81003f83fbd0 R08: 0000000000000001 R09: ffffffff80245103
      R10: 0000000000000020 R11: 0000000000000000 R12: ffff81003ea53a30
      R13: 0000000000000000 R14: 0000000000000011 R15: ffffffff80495926
      FS:  0000000000000000(0000) GS:ffffffff80be7400(0000) knlGS:0000000000000000
      CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
      CR2: 0000000000000070 CR3: 0000000000201000 CR4: 00000000000006a0
      DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
      DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400
      Process swapper (pid: 1, threadinfo ffff81003f83e000, task ffff81003f840000)
      Stack:  0000000000000008 ffff81003f83fbf6 ffff81003ea53a30 0000000000000008
       ffff81003f83fc10 ffffffff80495ab4 0000000000000011 0000000000000002
       0000000000000202 0000000000000202 00000000fffffff4 ffff81003ea53a30
      Call Trace:
       [<ffffffff80495ab4>] pcie_isr+0x18e/0x1bc
       [<ffffffff80260831>] request_irq+0x106/0x12f
       [<ffffffff80495fb6>] pcie_init+0x15e/0x6cc
       [<ffffffff804933a3>] pciehp_probe+0x64/0x541
       [<ffffffff8048f4e7>] pcie_port_probe_service+0x4c/0x76
       [<ffffffff8054af70>] driver_probe_device+0xd4/0x1f0
       [<ffffffff8054b108>] __driver_attach+0x7c/0x7e
       [<ffffffff8054b08c>] ? __driver_attach+0x0/0x7e
       [<ffffffff8054a4b6>] bus_for_each_dev+0x53/0x7d
       [<ffffffff8054ad3c>] driver_attach+0x1c/0x1e
       [<ffffffff8054a9c2>] bus_add_driver+0xdd/0x25b
       [<ffffffff80c09d3d>] ? pcied_init+0x0/0x8b
       [<ffffffff8054b288>] driver_register+0x5f/0x13e
       [<ffffffff80c09d3d>] ? pcied_init+0x0/0x8b
       [<ffffffff8048f441>] pcie_port_service_register+0x47/0x49
       [<ffffffff80c09d52>] pcied_init+0x15/0x8b
       [<ffffffff80bf3938>] kernel_init+0x75/0x243
       [<ffffffff808639d2>] ? _spin_unlock_irq+0x2b/0x3a
       [<ffffffff80228d1f>] ? finish_task_switch+0x57/0x9a
       [<ffffffff8020c258>] child_rip+0xa/0x12
       [<ffffffff8020bcec>] ? restore_args+0x0/0x30
       [<ffffffff80bf38c3>] ? kernel_init+0x0/0x243
       [<ffffffff8020c24e>] ? child_rip+0x0/0x12
      
      Code: 83 80 00 00 00 48 39 f0 75 e1 0f b6 c9 48 c7 c2 00 0e 8d 80 48 c7 c6 8a 60 a6 80 48 c7 c7 10 db a8 80 31 c0 e8 3f 8d d9 ff 31 db <48> 8b 43 70 48 8d 75 ef 48 89 df ff 50 30 80 7d ef 00 74 37 48
      RIP  [<ffffffff80494a8b>] pciehp_handle_presence_change+0x7e/0x113
       RSP <ffff81003f83fbb0>
      CR2: 0000000000000070
      Kernel panic - not syncing: Fatal exception
      
      The situation under which it occurs is hw and timing related: it appears
      to happen on a system that has PCI hotplug hardware but with no active
      hotplug cards, and another interrupt in the same (shared) IRQ line
      arrives too early, before the hotplug-slot entry has been set up - as
      triggered by CONFIG_DEBUG_SHIRQ=y:
      
      This patch contains the following two fixes.
      
      (1) Clear all events bits in Slot Status register to prevent the pciehp
          driver from detecting the spurious events that would have been occur
          before pciehp loading.
      
      (2) Add check whether slot initialization had been already done.
      
      This is short term fix. We need more structural fixes to install
      interrupt handler after slot initialization is done.
      Signed-off-by: NIngo Molnar <mingo@elte.hu>
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      dbd79aed
    • K
      shpchp: add message about shpchp_slot_with_bus option · b3bd307c
      Kenji Kaneshige 提交于
      Some (broken?) platform assign the same slot name to multiple hotplug
      slots. On such system, slot initialization would fail because of name
      collision. The shpchp driver already have a "slot_with_bus" module
      option which adds the bus number into the slot name. This patch adds
      the message about this module option that will be displayed when slot
      name collision is detected.
      Signed-off-by: NKenji Kaneshige <kaneshige.kenji@jp.fujitsu.com>
      Signed-off-by: NKristen Carlson Accardi <kristen.c.accardi@intel.com>
      Signed-off-by: NJesse Barnes <jbarnes@virtuousgeek.org>
      b3bd307c
  4. 27 5月, 2008 7 次提交