1. 19 Sep, 2009 1 commit
  2. 11 Jun, 2009 1 commit
  3. 11 Nov, 2008 1 commit
  4. 17 Oct, 2008 1 commit
  5. 13 Oct, 2008 1 commit
    • Alan Cox's avatar
      tty: usb-serial krefs · 4a90f09b
      Alan Cox authored
      Use kref in the USB serial drivers so that we don't free tty structures
      from under the URB receive handlers as has historically been the case if
      you were unlucky. This also gives us a framework for general tty drivers to
      use tty_port objects and refcount.
      
      Contains two err->dev_err changes merged together to fix clashes in the
      -next tree.
      Signed-off-by: default avatarAlan Cox <alan@redhat.com>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      4a90f09b
  6. 22 Jul, 2008 1 commit
    • Alan Cox's avatar
      usb_serial: API all change · 95da310e
      Alan Cox authored
      USB serial likes to use port->tty back pointers for the real work it does and
      to do so without any actual locking. Unfortunately when you consider hangup
      events, hangup/parallel reopen or even worse hangup followed by parallel close
      events the tty->port and port->tty pointers are not guaranteed to be the same
      as port->tty is the active tty while tty->port is the port the tty may or
      may not still be attached to.
      
      So rework the entire API to pass the tty struct. For console cases we need
      to pass both for now. This shows up multiple drivers that immediately crash
      with USB console some of which have been fixed in the process.
      
      Longer term we need a proper tty as console abstraction
      Signed-off-by: default avatarAlan Cox <alan@redhat.com>
      Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@suse.de>
      Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
      95da310e
  7. 21 Jul, 2008 1 commit
  8. 25 Apr, 2008 3 commits
  9. 25 Oct, 2007 1 commit
  10. 12 Jul, 2007 2 commits
  11. 07 Feb, 2007 1 commit
  12. 08 Dec, 2006 1 commit
    • Alan Cox's avatar
      [PATCH] tty: switch to ktermios · 606d099c
      Alan Cox authored
      This is the grungy swap all the occurrences in the right places patch that
      goes with the updates.  At this point we have the same functionality as
      before (except that sgttyb() returns speeds not zero) and are ready to
      begin turning new stuff on providing nobody reports lots of bugs
      
      If you are a tty driver author converting an out of tree driver the only
      impact should be termios->ktermios name changes for the speed/property
      setting functions from your upper layers.
      
      If you are implementing your own TCGETS function before then your driver
      was broken already and its about to get a whole lot more painful for you so
      please fix it 8)
      
      Also fill in c_ispeed/ospeed on init for most devices, although the current
      code will do this for you anyway but I'd like eventually to lose that extra
      paranoia
      
      [akpm@osdl.org: bluetooth fix]
      [mp3@de.ibm.com: sclp fix]
      [mp3@de.ibm.com: warning fix for tty3270]
      [hugh@veritas.com: fix tty_ioctl powerpc build]
      [jdike@addtoit.com: uml: fix ->set_termios declaration]
      Signed-off-by: default avatarAlan Cox <alan@redhat.com>
      Signed-off-by: default avatarMartin Peschke <mp3@de.ibm.com>
      Acked-by: default avatarPeter Oberparleiter <oberpar@de.ibm.com>
      Cc: Cornelia Huck <cornelia.huck@de.ibm.com>
      Signed-off-by: default avatarHugh Dickins <hugh@veritas.com>
      Signed-off-by: default avatarJeff Dike <jdike@addtoit.com>
      Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      606d099c
  13. 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
  14. 28 Sep, 2006 1 commit
  15. 12 Jul, 2006 1 commit
  16. 30 Jun, 2006 1 commit
  17. 28 Jun, 2006 1 commit
    • Paul Fulghum's avatar
      [PATCH] remove TTY_DONT_FLIP · 817d6d3b
      Paul Fulghum authored
      Remove TTY_DONT_FLIP tty flag.  This flag was introduced in 2.1.X kernels
      to prevent the N_TTY line discipline functions read_chan() and
      n_tty_receive_buf() from running at the same time.  2.2.15 introduced
      tty->read_lock to protect access to the N_TTY read buffer, which is the
      only state requiring protection between these two functions.
      
      The current TTY_DONT_FLIP implementation is broken for SMP, and is not
      universally honored by drivers that send data directly to the line
      discipline receive_buf function.
      
      Because TTY_DONT_FLIP is not necessary, is broken in implementation, and is
      not universally honored, it is removed.
      Signed-off-by: default avatarPaul Fulghum <paulkf@microgate.com>
      Cc: Alan Cox <alan@lxorguk.ukuu.org.uk>
      Cc: Theodore Ts'o <tytso@mit.edu>
      Signed-off-by: default avatarAndrew Morton <akpm@osdl.org>
      Signed-off-by: default avatarLinus Torvalds <torvalds@osdl.org>
      817d6d3b
  18. 21 Jun, 2006 1 commit
  19. 20 Mar, 2006 1 commit
  20. 04 Jan, 2006 2 commits
  21. 28 Oct, 2005 3 commits
  22. 27 Jun, 2005 1 commit
  23. 16 Apr, 2005 1 commit
    • Linus Torvalds's avatar
      Linux-2.6.12-rc2 · 1da177e4
      Linus Torvalds authored
      Initial git repository build. I'm not bothering with the full history,
      even though we have it. We can create a separate "historical" git
      archive of that later if we want to, and in the meantime it's about
      3.2GB when imported into git - space that would just make the early
      git days unnecessarily complicated, when we don't have a lot of good
      infrastructure for it.
      
      Let it rip!
      1da177e4