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  1. 18 May, 2012 1 commit
    • Sarah Sharp's avatar
      USB: Disable hub-initiated LPM for comms devices. · e1f12eb6
      Sarah Sharp authored
      Hub-initiated LPM is not good for USB communications devices.  Comms
      devices should be able to tell when their link can go into a lower power
      state, because they know when an incoming transmission is finished.
      Ideally, these devices would slam their links into a lower power state,
      using the device-initiated LPM, after finishing the last packet of their
      data transfer.
      
      If we enable the idle timeouts for the parent hubs to enable
      hub-initiated LPM, we will get a lot of useless LPM packets on the bus
      as the devices reject LPM transitions when they're in the middle of
      receiving data.  Worse, some devices might blindly accept the
      hub-initiated LPM and power down their radios while they're in the
      middle of receiving a transmission.
      
      The Intel Windows folks are disabling hub-initiated LPM for all USB
      communications devices under a xHCI USB 3.0 host.  In order to keep
      the Linux behavior as close as possible to Windows, we need to do the
      same in Linux.
      
      Set the disable_hub_initiated_lpm flag for for all USB communications
      drivers.  I know there aren't currently any USB 3.0 devices that
      implement these class specifications, but we should be ready if they do.
      Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
      Cc: Marcel Holtmann <marcel@holtmann.org>
      Cc: Gustavo Padovan <gustavo@padovan.org>
      Cc: Johan Hedberg <johan.hedberg@gmail.com>
      Cc: Hansjoerg Lipp <hjlipp@web.de>
      Cc: Tilman Schmidt <tilman@imap.cc>
      Cc: Karsten Keil <isdn@linux-pingi.de>
      Cc: Peter Korsgaard <jacmet@sunsite.dk>
      Cc: Jan Dumon <j.dumon@option.com>
      Cc: Petko Manolov <petkan@users.sourceforge.net>
      Cc: Steve Glendinning <steve.glendinning@smsc.com>
      Cc: "John W. Linville" <linville@tuxdriver.com>
      Cc: Kalle Valo <kvalo@qca.qualcomm.com>
      Cc: "Luis R. Rodriguez" <mcgrof@qca.qualcomm.com>
      Cc: Jouni Malinen <jouni@qca.qualcomm.com>
      Cc: Vasanthakumar Thiagarajan <vthiagar@qca.qualcomm.com>
      Cc: Senthil Balasubramanian <senthilb@qca.qualcomm.com>
      Cc: Christian Lamparter <chunkeey@googlemail.com>
      Cc: Brett Rudley <brudley@broadcom.com>
      Cc: Roland Vossen <rvossen@broadcom.com>
      Cc: Arend van Spriel <arend@broadcom.com>
      Cc: "Franky (Zhenhui) Lin" <frankyl@broadcom.com>
      Cc: Kan Yan <kanyan@broadcom.com>
      Cc: Dan Williams <dcbw@redhat.com>
      Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
      Cc: Ivo van Doorn <IvDoorn@gmail.com>
      Cc: Gertjan van Wingerde <gwingerde@gmail.com>
      Cc: Helmut Schaa <helmut.schaa@googlemail.com>
      Cc: Herton Ronaldo Krzesinski <herton@canonical.com>
      Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
      Cc: Larry Finger <Larry.Finger@lwfinger.net>
      Cc: Chaoming Li <chaoming_li@realsil.com.cn>
      Cc: Daniel Drake <dsd@gentoo.org>
      Cc: Ulrich Kunitz <kune@deine-taler.de>
      Signed-off-by: default avatarSarah Sharp <sarah.a.sharp@linux.intel.com>
      e1f12eb6
  2. 25 Apr, 2012 1 commit
  3. 02 Apr, 2012 1 commit
  4. 31 Jan, 2012 1 commit
  5. 18 Nov, 2011 1 commit
    • Greg Kroah-Hartman's avatar
      USB: convert drivers/net/* to use module_usb_driver() · d632eb1b
      Greg Kroah-Hartman authored
      This converts the drivers in drivers/net/* to use the
      module_usb_driver() macro which makes the code smaller and a bit
      simpler.
      
      Added bonus is that it removes some unneeded kernel log messages about
      drivers loading and/or unloading.
      
      Cc: Wolfgang Grandegger <wg@grandegger.com>
      Cc: Samuel Ortiz <samuel@sortiz.org>
      Cc: Oliver Neukum <oliver@neukum.name>
      Cc: Peter Korsgaard <jacmet@sunsite.dk>
      Cc: Petko Manolov <petkan@users.sourceforge.net>
      Cc: Steve Glendinning <steve.glendinning@smsc.com>
      Cc: Christian Lamparter <chunkeey@googlemail.com>
      Cc: "John W. Linville" <linville@tuxdriver.com>
      Cc: Dan Williams <dcbw@redhat.com>
      Cc: Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
      Cc: Ivo van Doorn <IvDoorn@gmail.com>
      Cc: Gertjan van Wingerde <gwingerde@gmail.com>
      Cc: Helmut Schaa <helmut.schaa@googlemail.com>
      Cc: Herton Ronaldo Krzesinski <herton@canonical.com>
      Cc: Hin-Tak Leung <htl10@users.sourceforge.net>
      Cc: Larry Finger <Larry.Finger@lwfinger.net>
      Cc: Chaoming Li <chaoming_li@realsil.com.cn>
      Cc: Lucas De Marchi <lucas.demarchi@profusion.mobi>
      Cc: "David S. Miller" <davem@davemloft.net>
      Cc: Roel Kluin <roel.kluin@gmail.com>
      Cc: Paul Gortmaker <paul.gortmaker@windriver.com>
      Cc: Jiri Pirko <jpirko@redhat.com>
      Cc: Pavel Roskin <proski@gnu.org>
      Cc: Yoann DI-RUZZA <y.diruzza@lim.eu>
      Cc: George <george0505@realtek.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      d632eb1b
  6. 03 Oct, 2011 1 commit
  7. 18 Aug, 2011 1 commit
  8. 08 Aug, 2011 1 commit
  9. 29 Apr, 2011 1 commit
    • David Decotigny's avatar
      ethtool: cosmetic: Use ethtool ethtool_cmd_speed API · 70739497
      David Decotigny authored
      This updates the network drivers so that they don't access the
      ethtool_cmd::speed field directly, but use ethtool_cmd_speed()
      instead.
      
      For most of the drivers, these changes are purely cosmetic and don't
      fix any problem, such as for those 1GbE/10GbE drivers that indirectly
      call their own ethtool get_settings()/mii_ethtool_gset(). The changes
      are meant to enforce code consistency and provide robustness with
      future larger throughputs, at the expense of a few CPU cycles for each
      ethtool operation.
      
      All drivers compiled with make allyesconfig ion x86_64 have been
      updated.
      
      Tested: make allyesconfig on x86_64 + e1000e/bnx2x work
      Signed-off-by: default avatarDavid Decotigny <decot@google.com>
      Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
      70739497
  10. 12 Feb, 2010 1 commit
  11. 04 Jan, 2010 1 commit
  12. 30 Dec, 2009 1 commit
  13. 14 Dec, 2009 1 commit
  14. 02 Sep, 2009 1 commit
  15. 01 Sep, 2009 1 commit
  16. 06 Jul, 2009 1 commit
  17. 30 May, 2009 1 commit
  18. 22 Mar, 2009 2 commits
  19. 19 Dec, 2008 1 commit
  20. 17 Oct, 2008 2 commits
  21. 25 Mar, 2008 1 commit
  22. 03 Feb, 2008 1 commit
  23. 10 Oct, 2007 2 commits
  24. 10 May, 2007 1 commit
  25. 26 Apr, 2007 1 commit
  26. 14 Feb, 2007 1 commit
    • Tim Schmielau's avatar
      [PATCH] remove many unneeded #includes of sched.h · cd354f1a
      Tim Schmielau authored
      After Al Viro (finally) succeeded in removing the sched.h #include in module.h
      recently, it makes sense again to remove other superfluous sched.h includes.
      There are quite a lot of files which include it but don't actually need
      anything defined in there.  Presumably these includes were once needed for
      macros that used to live in sched.h, but moved to other header files in the
      course of cleaning it up.
      
      To ease the pain, this time I did not fiddle with any header files and only
      removed #includes from .c-files, which tend to cause less trouble.
      
      Compile tested against 2.6.20-rc2 and 2.6.20-rc2-mm2 (with offsets) on alpha,
      arm, i386, ia64, mips, powerpc, and x86_64 with allnoconfig, defconfig,
      allmodconfig, and allyesconfig as well as a few randconfigs on x86_64 and all
      configs in arch/arm/configs on arm.  I also checked that no new warnings were
      introduced by the patch (actually, some warnings are removed that were emitted
      by unnecessarily included header files).
      Signed-off-by: default avatarTim Schmielau <tim@physik3.uni-rostock.de>
      Acked-by: default avatarRussell King <rmk+kernel@arm.linux.org.uk>
      Signed-off-by: default avatarAndrew Morton <akpm@linux-foundation.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      cd354f1a
  27. 04 Feb, 2007 1 commit
  28. 20 Dec, 2006 1 commit
  29. 07 Dec, 2006 1 commit
  30. 05 Oct, 2006 1 commit
    • David Howells's avatar
      IRQ: Maintain regs pointer globally rather than passing to IRQ handlers · 7d12e780
      David Howells authored
      Maintain a per-CPU global "struct pt_regs *" variable which can be used instead
      of passing regs around manually through all ~1800 interrupt handlers in the
      Linux kernel.
      
      The regs pointer is used in few places, but it potentially costs both stack
      space and code to pass it around.  On the FRV arch, removing the regs parameter
      from all the genirq function results in a 20% speed up of the IRQ exit path
      (ie: from leaving timer_interrupt() to leaving do_IRQ()).
      
      Where appropriate, an arch may override the generic storage facility and do
      something different with the variable.  On FRV, for instance, the address is
      maintained in GR28 at all times inside the kernel as part of general exception
      handling.
      
      Having looked over the code, it appears that the parameter may be handed down
      through up to twenty or so layers of functions.  Consider a USB character
      device attached to a USB hub, attached to a USB controller that posts its
      interrupts through a cascaded auxiliary interrupt controller.  A character
      device driver may want to pass regs to the sysrq handler through the input
      layer which adds another few layers of parameter passing.
      
      I've build this code with allyesconfig for x86_64 and i386.  I've runtested the
      main part of the code on FRV and i386, though I can't test most of the drivers.
      I've also done partial conversion for powerpc and MIPS - these at least compile
      with minimal configurations.
      
      This will affect all archs.  Mostly the changes should be relatively easy.
      Take do_IRQ(), store the regs pointer at the beginning, saving the old one:
      
      	struct pt_regs *old_regs = set_irq_regs(regs);
      
      And put the old one back at the end:
      
      	set_irq_regs(old_regs);
      
      Don't pass regs through to generic_handle_irq() or __do_IRQ().
      
      In timer_interrupt(), this sort of change will be necessary:
      
      	-	update_process_times(user_mode(regs));
      	-	profile_tick(CPU_PROFILING, regs);
      	+	update_process_times(user_mode(get_irq_regs()));
      	+	profile_tick(CPU_PROFILING);
      
      I'd like to move update_process_times()'s use of get_irq_regs() into itself,
      except that i386, alone of the archs, uses something other than user_mode().
      
      Some notes on the interrupt handling in the drivers:
      
       (*) input_dev() is now gone entirely.  The regs pointer is no longer stored in
           the input_dev struct.
      
       (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking.  It does
           something different depending on whether it's been supplied with a regs
           pointer or not.
      
       (*) Various IRQ handler function pointers have been moved to type
           irq_handler_t.
      Signed-Off-By: default avatarDavid Howells <dhowells@redhat.com>
      (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
      7d12e780
  31. 27 Sep, 2006 1 commit
    • Pete Zaitcev's avatar
      USB: Dealias -110 code (more complete) · 38e2bfc9
      Pete Zaitcev authored
      The purpose of this patch is to split off the case when a device does
      not reply on the lower level (which is reported by HC hardware), and
      a case when the device accepted the request, but does not reply at
      upper level. This redefinition allows to diagnose issues easier,
      without asking the user if the -110 happened "immediately".
      
      The usbmon splits such cases already thanks to its timestamp, but
      it's not always available.
      
      I adjusted all drivers which I found affected (by searching for "urb").
      Out of tree drivers may suffer a little bit, but I do not expect much
      breakage. At worst they may print a few messages.
      Signed-off-by: default avatarPete Zaitcev <zaitcev@redhat.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      38e2bfc9
  32. 01 Sep, 2006 1 commit
  33. 02 Aug, 2006 1 commit
  34. 12 Jul, 2006 1 commit
    • Dan Streetman's avatar
      [PATCH] USB: add ZyXEL vendor/product ID to rtl8150 driver · b6c2799d
      Dan Streetman authored
      I just got a "ZyXEL Prestige USB Adapter" that is actually RTL8150
      adapter.  Here is the relevant /proc/bus/usb/devices output (after
      adding the vendor/product IDs to the driver):
      
      T:  Bus=01 Lev=02 Prnt=02 Port=02 Cnt=02 Dev#=119 Spd=12  MxCh= 0
      D:  Ver= 1.10 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
      P:  Vendor=0586 ProdID=401a Rev= 1.00
      S:  Manufacturer=ZyXEL
      S:  Product=Prestige USB Adapter
      S:  SerialNumber=1027
      C:* #Ifs= 1 Cfg#= 1 Atr=80 MxPwr=120mA
      I:  If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=ff Driver=rtl8150
      E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
      E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
      E:  Ad=83(I) Atr=03(Int.) MxPS=   8 Ivl=1ms
      
      This patch adds the ZyXEL vendor ID to the rtl8150.c driver.  The
      device has absolutely no identifying marks on the outside for model
      type, just a serial number, and I can't find anything on ZyXEL's
      website, so I called the product ID PRODUCT_ID_PRESTIGE to match the
      product string.
      Signed-off-by: default avatarDan Streetman <ddstreet@ieee.org>
      Acked-by: <petkan@users.sourceforge.net>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      b6c2799d
  35. 30 Jun, 2006 1 commit
  36. 20 Mar, 2006 1 commit
  37. 04 Jan, 2006 1 commit