1. 23 1月, 2010 2 次提交
  2. 21 1月, 2010 27 次提交
    • L
      USB: isp1362: fix build failure on ARM systems via irq_flags cleanup · 0a2fea2e
      Lothar Wassmann 提交于
      There was some left over #ifdef ARM logic that is outdated but no one
      really noticed.  So instead of relying on this tricky logic, properly
      load and utilize the platform irq_flags resources.
      Reported-by: NBen Hutchings <ben@decadent.org.uk>
      Signed-off-by: NLothar Wassmann <LW@KARO-electronics.de>
      Signed-off-by: NMike Frysinger <vapier@gentoo.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      0a2fea2e
    • L
      USB: isp1362: better 64bit printf warning fixes · 96b85179
      Lothar Wassmann 提交于
      Some hosts that treat the return value of sizeof differently from unsigned
      long might still hit warnings.  So use %zu for sizeof() values.  This is a
      better version of the previous commit b0a9cf29.
      Signed-off-by: NLothar Wassmann <LW@KARO-electronics.de>
      Signed-off-by: NMike Frysinger <vapier@gentoo.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      96b85179
    • R
      USB: fix usbstorage for 2770:915d delivers no FAT · 10d2cdb6
      Ryan May 提交于
      Resolves kernel.org bug 14914.
      
      Remove entry for 2770:915d (usb digital camera with mass storage
      support) from unusual_devs.h. The fix triggered by the entry causes
      the file system on the camera to be completely inaccessible (no
      partition table, the device is not mountable).
      
      The patch works, but let me clarify a few things about it.  All the
      patch does is remove the entry for this device from the
      drivers/usb/storage/unusual_devs.h, which is supposed to help with a
      problem with the device's reported size (I think).  I'm pretty sure it
      was originally added for a reason, so I'm not sure removing it won't
      cause other problems to reappear.  Also, I should note that this
      unusual_devs.h entry was present (and activating workarounds) in
      2.6.29, but in that version everything works fine.  Starting with
      2.6.30, things no longer work.
      Signed-off-by: NRyan May <rmay31@gmail.com>
      Cc: Rohan Hart <rohan.hart17@gmail.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      
      10d2cdb6
    • C
      USB: Fix level of isp1760 Reloading ptd error message · c0d74142
      Colin Tuckley 提交于
      This error message is not actually an error, it's an information
      message. It is triggered when a transfer which ended in a NAQ is
      retried successfully by the hardware.
      Signed-off-by: NColin Tuckley <colin.tuckley@arm.com>
      Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
      Cc: Catalin Marinas <catalin.marinas@arm.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      c0d74142
    • A
      USB: FHCI: avoid NULL pointer dereference · ae35fe9e
      Alexander Beregalov 提交于
      Assign fhci only if usb is not NULL.
      Signed-off-by: NAlexander Beregalov <a.beregalov@gmail.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      ae35fe9e
    • S
      USB: Fix duplicate sysfs problem after device reset. · 04a723ea
      Sarah Sharp 提交于
      Borislav Petkov reports issues with duplicate sysfs endpoint files after a
      resume from a hibernate.  It turns out that the code to support alternate
      settings under xHCI has issues when a device with a non-default alternate
      setting is reset during the hibernate:
      
      [  427.681810] Restarting tasks ...
      [  427.681995] hub 1-0:1.0: state 7 ports 6 chg 0004 evt 0000
      [  427.682019] usb usb3: usb resume
      [  427.682030] ohci_hcd 0000:00:12.0: wakeup root hub
      [  427.682191] hub 1-0:1.0: port 2, status 0501, change 0000, 480 Mb/s
      [  427.682205] usb 1-2: usb wakeup-resume
      [  427.682226] usb 1-2: finish reset-resume
      [  427.682886] done.
      [  427.734658] ehci_hcd 0000:00:12.2: port 2 high speed
      [  427.734663] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
      [  427.746682] hub 3-0:1.0: hub_reset_resume
      [  427.746693] hub 3-0:1.0: trying to enable port power on non-switchable hub
      [  427.786715] usb 1-2: reset high speed USB device using ehci_hcd and address 2
      [  427.839653] ehci_hcd 0000:00:12.2: port 2 high speed
      [  427.839666] ehci_hcd 0000:00:12.2: GetStatus port 2 status 001005 POWER sig=se0 PE CONNECT
      [  427.847717] ohci_hcd 0000:00:12.0: GetStatus roothub.portstatus [1] = 0x00010100 CSC PPS
      [  427.915497] hub 1-2:1.0: remove_intf_ep_devs: if: ffff88022f9e8800 ->ep_devs_created: 1
      [  427.915774] hub 1-2:1.0: remove_intf_ep_devs: bNumEndpoints: 1
      [  427.915934] hub 1-2:1.0: if: ffff88022f9e8800: endpoint devs removed.
      [  427.916158] hub 1-2:1.0: create_intf_ep_devs: if: ffff88022f9e8800 ->ep_devs_created: 0, ->unregistering: 0
      [  427.916434] hub 1-2:1.0: create_intf_ep_devs: bNumEndpoints: 1
      [  427.916609]  ep_81: create, parent hub
      [  427.916632] ------------[ cut here ]------------
      [  427.916644] WARNING: at fs/sysfs/dir.c:477 sysfs_add_one+0x82/0x96()
      [  427.916649] Hardware name: System Product Name
      [  427.916653] sysfs: cannot create duplicate filename '/devices/pci0000:00/0000:00:12.2/usb1/1-2/1-2:1.0/ep_81'
      [  427.916658] Modules linked in: binfmt_misc kvm_amd kvm powernow_k8 cpufreq_ondemand cpufreq_powersave cpufreq_userspace freq_table cpufreq_conservative ipv6 vfat fat
      +8250_pnp 8250 pcspkr ohci_hcd serial_core k10temp edac_core
      [  427.916694] Pid: 278, comm: khubd Not tainted 2.6.33-rc2-00187-g08d869aa-dirty #13
      [  427.916699] Call Trace:
      
      The problem is caused by a mismatch between the USB core's view of the
      device state and the USB device and xHCI host's view of the device state.
      
      After the device reset and re-configuration, the device and the xHCI host
      think they are using alternate setting 0 of all interfaces.  However, the
      USB core keeps track of the old state, which may include non-zero
      alternate settings.  It uses intf->cur_altsetting to keep the endpoint
      sysfs files for the old state across the reset.
      
      The bandwidth allocation functions need to know what the xHCI host thinks
      the current alternate settings are, so original patch set
      intf->cur_altsetting to the alternate setting 0.  This caused duplicate
      endpoint files to be created.
      
      The solution is to not set intf->cur_altsetting before calling
      usb_set_interface() in usb_reset_and_verify_device().  Instead, we add a
      new flag to struct usb_interface to tell usb_hcd_alloc_bandwidth() to use
      alternate setting 0 as the currently installed alternate setting.
      Signed-off-by: NSarah Sharp <sarah.a.sharp@linux.intel.com>
      Tested-by: NBorislav Petkov <petkovbb@googlemail.com>
      Cc: Alan Stern <stern@rowland.harvard.edu>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      04a723ea
    • G
      USB: add speed values for USB 3.0 and wireless controllers · b132b04e
      Greg Kroah-Hartman 提交于
      These controllers say "unknown" for their speed in sysfs, which
      obviously isn't correct.
      Reported-by: NKurt Garloff <garloff@novell.com>
      Cc: Sarah Sharp <sarah.a.sharp@linux.intel.com>
      Cc: David Vrabel <david.vrabel@csr.com>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      b132b04e
    • A
      USB: add missing delay during remote wakeup · 49d0f078
      Alan Stern 提交于
      This patch (as1330) fixes a bug in khbud's handling of remote
      wakeups.  When a device sends a remote-wakeup request, the parent hub
      (or the host controller driver, for directly attached devices) begins
      the resume sequence and notifies khubd when the sequence finishes.  At
      this point the port's SUSPEND feature is automatically turned off.
      
      However the device needs an additional 10-ms resume-recovery time
      (TRSMRCY in the USB spec).  Khubd does not wait for this delay if the
      SUSPEND feature is off, and as a result some devices fail to behave
      properly following a remote wakeup.  This patch adds the missing
      delay to the remote-wakeup path.
      
      It also extends the resume-signalling delay used by ehci-hcd and
      uhci-hcd from 20 ms (the value in the spec) to 25 ms (the value we use
      for non-remote-wakeup resumes).  The extra time appears to help some
      devices.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Cc: stable <stable@kernel.org>
      Cc: Rickard Bellini <rickard.bellini@ericsson.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      
      49d0f078
    • A
      USB: EHCI & UHCI: fix race between root-hub suspend and port resume · cec3a53c
      Alan Stern 提交于
      This patch (as1321) fixes a problem with EHCI and UHCI root-hub
      suspends: If the suspend occurs while a port is trying to resume, the
      resume doesn't finish and simply gets lost.  When remote wakeup is
      enabled, this is undesirable behavior.
      
      The patch checks first to see if any port resumes are in progress, and
      if they are then it fails the root-hub suspend with -EBUSY.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      cec3a53c
    • A
      USB: EHCI: fix handling of unusual interrupt intervals · 1b9a38bf
      Alan Stern 提交于
      This patch (as1320) fixes two problems related to interrupt-URB
      scheduling in ehci-hcd.
      
      	URBs with an interval of 2 or 4 microframes aren't handled.
      	For the time being, the patch reduces to interval to 1 uframe.
      
      	URBs are constrained to have an interval no larger than 1024
      	frames by usb_submit_urb().  But some EHCI controllers allow
      	use of a schedule as short as 256 frames; for these
      	controllers we may have to decrease the interval to the
      	actual schedule length.
      
      The second problem isn't very significant since few devices expose
      interrupt endpoints with an interval larger than 256 frames.  But the
      first problem is critical; it will prevent the kernel from working
      with devices having interrupt intervals of 2 or 4 uframes.
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Cc: stable <stable@kernel.org>
      Tested-by: NGlynn Farrow <farrowg@sg.ibm.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      1b9a38bf
    • O
      USB: Don't use GFP_KERNEL while we cannot reset a storage device · acbe2feb
      Oliver Neukum 提交于
      Memory allocations with GFP_KERNEL can cause IO to a storage
      device which can fail resulting in a need to reset the device.
      Therefore GFP_KERNEL cannot be safely used between usb_lock_device()
      and usb_unlock_device(). Replace by GFP_NOIO.
      Signed-off-by: NOliver Neukum <oliver@neukum.org>
      Cc: stable <stable@kernel.org>
      Cc: Alan Stern <stern@rowland.harvard.edu>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      acbe2feb
    • A
      USB: fix bitmask merge error · a91b593e
      Alan Stern 提交于
      This patch adds a mask bit which was mistakenly omitted from the
      as1311 patch (usb-storage: add BAD_SENSE flag).
      Signed-off-by: NAlan Stern <stern@rowland.harvard.edu>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      a91b593e
    • J
      usb: serial: fix memory leak in generic driver · 25915302
      Johan Hovold 提交于
      Fix a regression introduced by commit
      715b1dc0 ("USB: usb_debug,
      usb_generic_serial: implement multi urb write").
      
      URB transfer buffer was never freed when using multi-urb writes. 
      Currently the only driver enabling multi-urb writes is usb_debug.
      Signed-off-by: NJohan Hovold <jhovold@gmail.com>
      Cc: Greg KH <greg@kroah.com>
      Acked-by: NJason Wessel <jason.wessel@windriver.com>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      25915302
    • S
      USB: serial: fix USB serial fix kfifo_len locking · 25719e6b
      Stefani Seibold 提交于
      This patch fix a possible race bug in drivers/usb/serial/generic with
      the new kfifo API.
      
      Please apply it to the 2.6.33-rc* tree.
      Signed-off-by: NStefani Seibold <stefani@seibold.net>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      25719e6b
    • G
      Staging: hv: fix smp problems in the hyperv core code · 7692fd4d
      Greg Kroah-Hartman 提交于
      This fixes a number of SMP problems that were in the hyperv core code.
      
      Patch originally written by K. Y. Srinivasan <ksrinivasan@novell.com>
      but forward ported to the latest in-kernel code and tweaked slightly by
      me.
      
      Novell, Inc. hereby disclaims all copyright in any derivative work
      copyright associated with this patch.
      Signed-off-by: NK. Y. Srinivasan <ksrinivasan@novell.com>
      Cc: Hank Janssen <hjanssen@microsoft.com>
      Cc: Haiyang Zhang <haiyangz@microsoft.com>.
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      7692fd4d
    • A
      Staging: et131x: Fix 2.6.33rc1 regression in et131x · d31a2ff0
      Alan Cox 提交于
      et131x: Fix 12bit wrapping
      
      From: Alan Cox <alan@linux.intel.com>
      
      The 12bit wrap logic conversion is wrong and this shows up for some
      memory sizes and layouts of card. Patch it up for now, once the kernel
      view of status is cleaned up it'll become two variables and a lot saner.
      Signed-off-by: NAlan Cox <alan@linux.intel.com>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      d31a2ff0
    • E
      Staging: asus_oled: fix oops in 2.6.32.2 · 20633bf0
      Eugeni Dodonov 提交于
      After updating to 2.6.32 kernel, I started experiencing Oopses caused by
      the asus_oled module. After quick investigation, I wrapped this simple
      patch which fixes an Oops in by asus_oled module on 2.6.32.2 kernel,
      caused by incorrect usage of strict_strtoul function call within
      set_enabled and set_disabled functions. This can be triggered by simple
      running the userspace client for asus_old (e.g., 'asusoled -e' or
      'asusoled -d').
      Signed-off-by: NEugeni Dodonov <eugeni@mandriva.com>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      20633bf0
    • G
      tty: fix race in tty_fasync · 70362511
      Greg Kroah-Hartman 提交于
      We need to keep the lock held over the call to __f_setown() to
      prevent a PID race.
      
      Thanks to Al Viro for pointing out the problem, and to Travis for
      making us look here in the first place.
      
      Cc: Eric W. Biederman <ebiederm@xmission.com>
      Cc: Al Viro <viro@ZenIV.linux.org.uk>
      Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
      Cc: Linus Torvalds <torvalds@linux-foundation.org>
      Cc: Tavis Ormandy <taviso@google.com>
      Cc: Jeff Dike <jdike@addtoit.com>
      Cc: Julien Tinnes <jln@google.com>
      Cc: Matt Mackall <mpm@selenic.com>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      70362511
    • P
      serial: serial_cs: oxsemi quirk breaks resume · 18c576f9
      Pavel Machek 提交于
      Quirk is applied on all cards with given manfid (is it that correct?).
      Unfortunately, that quirk breaks resume on zaurus with billionton
      bluetooth card inserted: c950ctrl is 0 and outb() faults.
      
      I believe it is simply not a multiport card.  (info->multi == 1).  ...
      ...  confirmed by printks.
      Signed-off-by: NPavel Machek <pavel@ucw.cz>
      Acked-by: NAlan Cox <alan@lxorguk.ukuu.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      18c576f9
    • R
      serial: imx: bit &/| confusion · 2e2eb509
      Roel Kluin 提交于
      Since UCR1_UARTEN is defined 1, the port was always treated as enabled.
      Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
      Cc: Alan Cox <alan@linux.intel.com>
      Acked-by: NOskar Schirmer <os@emlix.com>
      Cc: Sascha Hauer <s.hauer@pengutronix.de>
      Cc: Fabian Godehardt <fg@emlix.com>
      Cc: Daniel Glöckner <dg@emlix.com>
      Cc: Russell King <rmk@arm.linux.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      2e2eb509
    • A
      serial: Fix crash if the minimum rate of the device is > 9600 baud · 16ae2a87
      Alan Cox 提交于
      In that situation if the old rate is invalid and the new rate is invalid
      and the chip cannot do 9600 baud we report zero, which makes all the
      drivers explode.
      
      Instead force the rate based on min/max
      Signed-off-by: NAlan Cox <alan@linux.intel.com>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      16ae2a87
    • S
      serial-core: resume serial hardware with no_console_suspend · 4547be78
      Stanislav Brabec 提交于
      Perform a tricky suspend/resume even with no_console_suspend.
      
      With no_console_suspend, kernel skips serial port suspend/resume and the
      serial hardware may remain in undefined state after resume. It actually
      happens on devices that don't have BIOS that handle serial
      initialization. It makes impossible to use serial console after resume.
      
      Devices affected by this problem include:
      Sharp Zaurus devices
      Several PXA based ARM embedded boards
      
      The patch does:
      - Save the hardware state
      - Perform buffer flush in time of its suspend call
      - Tell the driver that port is suspended
      - But still accept new data
      - And keep console hardware in state that allows to send them
      
      It allows to capture late console messages without breaking console
      after resume.
      
      This is just a resend of a patch discussed in these threads, as the
      patch was not yet applied.
      
      "Possible suspend/resume regression in .32-rc?" (Nov 1-5, 2009, ARM
      list, later LKML)
      
      "serial-core: resume serial hardware with no_console_suspend" (Sep
      15-Oct 18, 2009, LKML & ARM lists)
      Signed-off-by: NStanislav Brabec <sbrabec@suse.cz>
      Tested-by: NHaojian Zhuang <haojian.zhuang@gmail.com>
      Tested-by: NDaniel Mack <daniel@caiaq.de>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      4547be78
    • M
      serial: 8250_pnp: use wildcard for serial Wacom tablets · 6d34855d
      Matthew Garrett 提交于
      Wacom claims that the WACF namespace will always be devoted to serial
      Wacom tablets.  Remove the existing entries and add a wildcard to avoid
      having to update the kernel every time they add a new device.
      Signed-off-by: NPing Cheng <pingc@wacom.com>
      Signed-off-by: NMatthew Garrett <mjg@redhat.com>
      Tested-by: NPing Cheng <pingc@wacom.com>
      Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
      Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      6d34855d
    • A
      nozomi: quick fix for the close/close bug · eeec32a7
      Alan Cox 提交于
      Nozomi goes wrong if you get the sequence
      
      	open
      	open
      	close
      
      	[stuff]
      	close
      
      which turns out to occur on some ppp type setups.
      
      This is a quick patch up for the problem. It's not really fixing Nozomi
      which completely fails to implement tty open/close semantics and all the
      other needed stuff. Doing it right is a rather more invasive patch set and
      not one that will backport.
      Signed-off-by: NAlan Cox <alan@linux.intel.com>
      Cc: stable <stable@kernel.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      eeec32a7
    • G
      Revert "sysdev: fix prototype for memory_sysdev_class show/store functions" · bd796671
      Greg Kroah-Hartman 提交于
      This reverts commit 8ff410da
      
      It should not have been sent to Linus's tree yet, as it depends
      on changes that are queued up in my driver-core for the .34 kernel
      merge.
      
      Cc: Wu Fengguang <fengguang.wu@intel.com>
      Cc: Andi Kleen <andi@firstfloor.org>
      Cc: "Zheng, Shaohui" <shaohui.zheng@intel.com>
      Cc: Andrew Morton <akpm@linux-foundation.org>
      Cc: Linus Torvalds
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      bd796671
    • H
      driver-core: fix devtmpfs crash on s390 · f776c5ec
      Heiko Carstens 提交于
      On Mon, Jan 18, 2010 at 05:26:20PM +0530, Sachin Sant wrote:
      > Hello Heiko,
      >
      > Today while trying to boot next-20100118 i came across
      > the following Oops :
      >
      > Brought up 4 CPUs
      > Unable to handle kernel pointer dereference at virtual kernel address 0000000000
      > 543000
      > Oops: 0004 #1 SMP
      > Modules linked in:
      > CPU: 0 Not tainted 2.6.33-rc4-autotest-next-20100118-5-default #1
      > Process swapper (pid: 1, task: 00000000fd792038, ksp: 00000000fd797a30)
      > Krnl PSW : 0704200180000000 00000000001eb0b8 (shmem_parse_options+0xc0/0x328)
      >           R:0 T:1 IO:1 EX:1 Key:0 M:1 W:0 P:0 AS:0 CC:2 PM:0 EA:3
      > Krnl GPRS: 000000000054388a 000000000000003d 0000000000543836 000000000000003d
      >           0000000000000000 0000000000483f28 0000000000536112 00000000fd797d00
      >           00000000fd4ba100 0000000000000100 0000000000483978 0000000000543832
      >           0000000000000000 0000000000465958 00000000001eb0b0 00000000fd797c58
      > Krnl Code: 00000000001eb0aa: c0e5000994f1       brasl   %r14,31da8c
      >           00000000001eb0b0: b9020022           ltgr    %r2,%r2
      >           00000000001eb0b4: a784010b           brc     8,1eb2ca
      >          >00000000001eb0b8: 92002000           mvi     0(%r2),0
      >           00000000001eb0bc: a7080000           lhi     %r0,0
      >           00000000001eb0c0: 41902001           la      %r9,1(%r2)
      >           00000000001eb0c4: b9040016           lgr     %r1,%r6
      >           00000000001eb0c8: b904002b           lgr     %r2,%r11
      > Call Trace:
      > (<00000000fd797c50> 0xfd797c50)
      > <00000000001eb5da> shmem_fill_super+0x13a/0x25c
      > <0000000000228cfa> get_sb_single+0xbe/0xdc
      > <000000000034ffc0> dev_get_sb+0x2c/0x38
      > <000000000066c602> devtmpfs_init+0x46/0xc0
      > <000000000066c53e> driver_init+0x22/0x60
      > <000000000064d40a> kernel_init+0x24e/0x3d0
      > <000000000010a7ea> kernel_thread_starter+0x6/0xc
      > <000000000010a7e4> kernel_thread_starter+0x0/0xc
      >
      > I never tried to boot a kernel with DEVTMPFS enabled on a s390 box.
      > So am wondering if this is supported or not ? If you think this
      > is supported i will send a mail to community on this.
      
      There is nothing arch specific to devtmpfs. This part crashes because the
      kernel tries to modify the data read-only section which is write protected
      on s390.
      Signed-off-by: NHeiko Carstens <heiko.carstens@de.ibm.com>
      Acked-by: NKay Sievers <kay.sievers@vrfy.org>
      Signed-off-by: NGreg Kroah-Hartman <gregkh@suse.de>
      f776c5ec
    • T
      libata: retry FS IOs even if it has failed with AC_ERR_INVALID · 534ead70
      Tejun Heo 提交于
      libata currently doesn't retry if a command fails with AC_ERR_INVALID
      assuming that retrying won't get it any further even if retried.
      However, a failure may be classified as invalid through hardware
      glitch (incorrect reading of the error register or firmware bug) and
      there isn't whole lot to gain by not retrying as actually invalid
      commands will be failed immediately.  Also, commands serving FS IOs
      are extremely unlikely to be invalid.  Retry FS IOs even if it's
      marked invalid.
      
      Transient and incorrect invalid failure was seen while debugging
      firmware related issue on Samsung n130 on bko#14314.
      
        http://bugzilla.kernel.org/show_bug.cgi?id=14314Signed-off-by: NTejun Heo <tj@kernel.org>
      Reported-by: NJohannes Stezenbach <js@sig21.net>
      Signed-off-by: NJeff Garzik <jgarzik@redhat.com>
      534ead70
  3. 20 1月, 2010 5 次提交
    • L
      ACPI: delete acpi_processor_power_verify_c2() · d22edd29
      Len Brown 提交于
      no functional change -- cleanup only.
      
      acpi_processor_power_verify_c2() was nearly empty due to a previous patch,
      so expand its remains into its one caller and delete it.
      Signed-off-by: NLen Brown <len.brown@intel.com>
      d22edd29
    • L
      ACPI: allow C3 > 1000usec · a6d72c18
      Len Brown 提交于
      Do for C3 what the previous patch did for C2.
      
      The C2 patch was in response to a highly visible
      and multiply reported C-state/turbo failure,
      while this change has no bug report in-hand.
      
      This will enable C3 in Linux on systems where BIOS
      overstates C3 latency in _CST.  It will also enable
      future systems which may actually have C3 > 1000usec.
      
      Linux has always ignored ACPI BIOS C3 with exit latency > 1000 usec,
      and the ACPI spec is clear that is correct FADT-supplied C3.
      
      However, the ACPI spec explicitly states that _CST-supplied C-states
      have no latency limits.
      
      So move the 1000usec C3 test out of the code shared
      by FADT and _CST code-paths, and into the FADT-specific path.
      Signed-off-by: NLen Brown <len.brown@intel.com>
      a6d72c18
    • L
      ACPI: enable C2 and Turbo-mode on Nehalem notebooks on A/C · 5d76b6f6
      Len Brown 提交于
      Linux has always ignored ACPI BIOS C2 with exit latency > 100 usec,
      and the ACPI spec is clear that is correct FADT-supplied C2.
      
      However, the ACPI spec explicitly states that _CST-supplied C-states
      have no latency limits.
      
      So move the 100usec C2 test out of the code shared
      by FADT and _CST code-paths, and into the FADT-specific path.
      
      This bug has not been visible until Nehalem, which advertises
      a CPU-C2 worst case exit latency on servers of 205usec.
      That (incorrect) figure is being used by BIOS writers
      on mobile Nehalem systems for the AC configuration.
      Thus, Linux ignores C2 leaving just C1, which is
      saves less power, and also impacts performance
      by preventing the use of turbo mode.
      
      http://bugzilla.kernel.org/show_bug.cgi?id=15064Tested-by: NAlex Chiang <achiang@hp.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      5d76b6f6
    • D
      ACPI: power_meter: remove double kfree() · 7f07a605
      Darren Jenkins 提交于
      resource->domain_devices can be double kfree()'d in a couple of places.
      Fix this by setting num_domain_devices = 0 after the kfree().
      
      Coverity CID: 13356, 13355, 13354
      Signed-off-by: NDarren Jenkins <darrenrjenkins@gmail.com>
      Acked-by: NDarrick J. Wong <djwong@us.ibm.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      7f07a605
    • A
      ACPI: processor: restrict early _PDC to opt-in platforms · 2205cbe8
      Alex Chiang 提交于
      Commit 78f16996 (ACPI: processor: call _PDC early) blindly walks
      the namespace and calls _PDC on every processor object it finds.
      
      This change may cause issues on platforms that declare dummy
      values for SSDTs on non-present processors (disabled in MADT).
      When we call _PDC and dynamically attempt to execute the AML
      Load() op on these dummy SSDTs, there's no telling what might
      happen.
      
      Rather than finding every platform that has bogus SSDTs, restrict
      early _PDC calls to platforms that are known to need early
      evaluation of _PDC.
      
      This is a minimal, temporary fix (given the context of the
      current release cycle). A real solution of checking the MADT for
      non-present processors will be written for the next merge window.
      
      References:
      
      	http://bugzilla.kernel.org/show_bug.cgi?id=14710
      	http://bugzilla.kernel.org/show_bug.cgi?id=14954Signed-off-by: NAlex Chiang <achiang@hp.com>
      Signed-off-by: NLen Brown <len.brown@intel.com>
      2205cbe8
  4. 19 1月, 2010 1 次提交
  5. 18 1月, 2010 4 次提交
  6. 17 1月, 2010 1 次提交