Eric Lee / smarc-fsl-linux-kernel

04 Dec, 2009

1 commit

  • 8e95a2026   drivers/net: Move && and || to end of previous line ... Browse Code »

    Only files where David Miller is the primary git-signer.
    wireless, wimax, ixgbe, etc are not modified.

    Compile tested x86 allyesconfig only
    Not all files compiled (not x86 compatible)

    Added a few > 80 column lines, which I ignored.
    Existing checkpatch complaints ignored.

    Signed-off-by: Joe Perches
    Signed-off-by: David S. Miller

    Joe Perches
     

19 Nov, 2009

1 commit

07 Nov, 2009

1 commit

  • 9646e7ce3   net, compat_ioctl: handle socket ioctl abuses in tty drivers ... Browse Code »

    Slip and a few other drivers use the same ioctl numbers on
    tty devices that are normally meant for sockets. This causes
    problems with our compat_ioctl handling that tries to convert
    the data structures in a different format.

    Fortunately, these five drivers all use 32 bit compatible
    data structures in the ioctl numbers, so we can just add
    a trivial compat_ioctl conversion function to each of them.

    SIOCSIFENCAP and SIOCGIFENCAP do not need to live in
    fs/compat_ioctl.c after this any more, and they are not
    used on any sockets.

    Signed-off-by: Arnd Bergmann
    Signed-off-by: David S. Miller

    Arnd Bergmann
     

12 Oct, 2009

1 commit

20 Sep, 2009

1 commit

  • 5342b77c4   slip: Clean up create and destroy ... Browse Code »

    The network layer now has a destructor we can hook to clean up the slip
    devices array. That needs us to initiate unregister events in the right
    places which with the current tty layer we can do, and with network
    refcounting is safe to do.

    Signed-off-by: Alan Cox
    Signed-off-by: Greg Kroah-Hartman

    Alan Cox
     

01 Sep, 2009

1 commit

06 Jul, 2009

1 commit

08 Jan, 2009

1 commit

06 Dec, 2008

1 commit

04 Nov, 2008

1 commit

21 Jul, 2008

1 commit

  • a352def21   tty: Ldisc revamp ... Browse Code »

    Move the line disciplines towards a conventional ->ops arrangement. For
    the moment the actual 'tty_ldisc' struct in the tty is kept as part of
    the tty struct but this can then be changed if it turns out that when it
    all settles down we want to refcount ldiscs separately to the tty.

    Pull the ldisc code out of /proc and put it with our ldisc code.

    Signed-off-by: Alan Cox
    Signed-off-by: Linus Torvalds

    Alan Cox
     

30 Apr, 2008

1 commit

  • f34d7a5b7   tty: The big operations rework ... Browse Code »

    - Operations are now a shared const function block as with most other Linux
    objects

    - Introduce wrappers for some optional functions to get consistent behaviour

    - Wrap put_char which used to be patched by the tty layer

    - Document which functions are needed/optional

    - Make put_char report success/fail

    - Cache the driver->ops pointer in the tty as tty->ops

    - Remove various surplus lock calls we no longer need

    - Remove proc_write method as noted by Alexey Dobriyan

    - Introduce some missing sanity checks where certain driver/ldisc
    combinations would oops as they didn't check needed methods were present

    [akpm@linux-foundation.org: fix fs/compat_ioctl.c build]
    [akpm@linux-foundation.org: fix isicom]
    [akpm@linux-foundation.org: fix arch/ia64/hp/sim/simserial.c build]
    [akpm@linux-foundation.org: fix kgdb]
    Signed-off-by: Alan Cox
    Acked-by: Greg Kroah-Hartman
    Cc: Jason Wessel
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alan Cox
     

29 Jan, 2008

1 commit

07 Nov, 2007

1 commit

  • d0127539e   [TTY]: Use tty_mode_ioctl() in network drivers. ... Browse Code »

    We conciously make a change here - we permit mode and speed setting to
    be done in things like SLIP mode. There isn't actually a technical
    reason to disallow this. It's usually a silly thing to do but we can
    do it and soemone might wish to do so.

    Signed-off-by: Alan Cox
    Signed-off-by: David S. Miller

    Alan Cox
     

11 Oct, 2007

1 commit

  • 10d024c1b   [NET]: Nuke SET_MODULE_OWNER macro. ... Browse Code »

    It's been a useless no-op for long enough in 2.6 so I figured it's time to
    remove it. The number of people that could object because they're
    maintaining unified 2.4 and 2.6 drivers is probably rather small.

    [ Handled drivers added by netdev tree and some missed IRDA cases... -DaveM ]

    Signed-off-by: Ralf Baechle
    Signed-off-by: Jeff Garzik
    Signed-off-by: David S. Miller

    Ralf Baechle
     

27 Aug, 2007

1 commit

26 Apr, 2007

1 commit

  • 98e399f82   [SK_BUFF]: Introduce skb_mac_header() ... Browse Code »

    For the places where we need a pointer to the mac header, it is still legal to
    touch skb->mac.raw directly if just adding to, subtracting from or setting it
    to another layer header.

    This one also converts some more cases to skb_reset_mac_header() that my
    regex missed as it had no spaces before nor after '=', ugh.

    Signed-off-by: Arnaldo Carvalho de Melo
    Signed-off-by: David S. Miller

    Arnaldo Carvalho de Melo
     

09 Feb, 2007

1 commit

14 Dec, 2006

1 commit

  • 5cbded585   [PATCH] getting rid of all casts of k[cmz]alloc() calls ... Browse Code »

    Run this:

    #!/bin/sh
    for f in $(grep -Erl "\([^\)]*\) *k[cmz]alloc" *) ; do
    echo "De-casting $f..."
    perl -pi -e "s/ ?= ?\([^\)]*\) *(k[cmz]alloc) *\(/ = \1\(/" $f
    done

    And then go through and reinstate those cases where code is casting pointers
    to non-pointers.

    And then drop a few hunks which conflicted with outstanding work.

    Cc: Russell King , Ian Molton
    Cc: Mikael Starvik
    Cc: Yoshinori Sato
    Cc: Roman Zippel
    Cc: Geert Uytterhoeven
    Cc: Ralf Baechle
    Cc: Paul Mackerras
    Cc: Kyle McMartin
    Cc: Benjamin Herrenschmidt
    Cc: Martin Schwidefsky
    Cc: "David S. Miller"
    Cc: Jeff Dike
    Cc: Greg KH
    Cc: Jens Axboe
    Cc: Paul Fulghum
    Cc: Alan Cox
    Cc: Karsten Keil
    Cc: Mauro Carvalho Chehab
    Cc: Jeff Garzik
    Cc: James Bottomley
    Cc: Ian Kent
    Cc: Steven French
    Cc: David Woodhouse
    Cc: Neil Brown
    Cc: Jaroslav Kysela
    Cc: Takashi Iwai
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Robert P. J. Day
     

14 Sep, 2006

1 commit

01 Jul, 2006

1 commit

11 Jan, 2006

1 commit

  • 33f0f88f1   [PATCH] TTY layer buffering revamp ... Browse Code »

    The API and code have been through various bits of initial review by
    serial driver people but they definitely need to live somewhere for a
    while so the unconverted drivers can get knocked into shape, existing
    drivers that have been updated can be better tuned and bugs whacked out.

    This replaces the tty flip buffers with kmalloc objects in rings. In the
    normal situation for an IRQ driven serial port at typical speeds the
    behaviour is pretty much the same, two buffers end up allocated and the
    kernel cycles between them as before.

    When there are delays or at high speed we now behave far better as the
    buffer pool can grow a bit rather than lose characters. This also means
    that we can operate at higher speeds reliably.

    For drivers that receive characters in blocks (DMA based, USB and
    especially virtualisation) the layer allows a lot of driver specific
    code that works around the tty layer with private secondary queues to be
    removed. The IBM folks need this sort of layer, the smart serial port
    people do, the virtualisers do (because a virtualised tty typically
    operates at infinite speed rather than emulating 9600 baud).

    Finally many drivers had invalid and unsafe attempts to avoid buffer
    overflows by directly invoking tty methods extracted out of the innards
    of work queue structs. These are no longer needed and all go away. That
    fixes various random hangs with serial ports on overflow.

    The other change in here is to optimise the receive_room path that is
    used by some callers. It turns out that only one ldisc uses receive room
    except asa constant and it updates it far far less than the value is
    read. We thus make it a variable not a function call.

    I expect the code to contain bugs due to the size alone but I'll be
    watching and squashing them and feeding out new patches as it goes.

    Because the buffers now dynamically expand you should only run out of
    buffering when the kernel runs out of memory for real. That means a lot of
    the horrible hacks high performance drivers used to do just aren't needed any
    more.

    Description:

    tty_insert_flip_char is an old API and continues to work as before, as does
    tty_flip_buffer_push() [this is why many drivers dont need modification]. It
    does now also return the number of chars inserted

    There are also

    tty_buffer_request_room(tty, len)

    which asks for a buffer block of the length requested and returns the space
    found. This improves efficiency with hardware that knows how much to
    transfer.

    and tty_insert_flip_string_flags(tty, str, flags, len)

    to insert a string of characters and flags

    For a smart interface the usual code is

    len = tty_request_buffer_room(tty, amount_hardware_says);
    tty_insert_flip_string(tty, buffer_from_card, len);

    More description!

    At the moment tty buffers are attached directly to the tty. This is causing a
    lot of the problems related to tty layer locking, also problems at high speed
    and also with bursty data (such as occurs in virtualised environments)

    I'm working on ripping out the flip buffers and replacing them with a pool of
    dynamically allocated buffers. This allows both for old style "byte I/O"
    devices and also helps virtualisation and smart devices where large blocks of
    data suddenely materialise and need storing.

    So far so good. Lots of drivers reference tty->flip.*. Several of them also
    call directly and unsafely into function pointers it provides. This will all
    break. Most drivers can use tty_insert_flip_char which can be kept as an API
    but others need more.

    At the moment I've added the following interfaces, if people think more will
    be needed now is a good time to say

    int tty_buffer_request_room(tty, size)

    Try and ensure at least size bytes are available, returns actual room (may be
    zero). At the moment it just uses the flipbuf space but that will change.
    Repeated calls without characters being added are not cumulative. (ie if you
    call it with 1, 1, 1, and then 4 you'll have four characters of space. The
    other functions will also try and grow buffers in future but this will be a
    more efficient way when you know block sizes.

    int tty_insert_flip_char(tty, ch, flag)

    As before insert a character if there is room. Now returns 1 for success, 0
    for failure.

    int tty_insert_flip_string(tty, str, len)

    Insert a block of non error characters. Returns the number inserted.

    int tty_prepare_flip_string(tty, strptr, len)

    Adjust the buffer to allow len characters to be added. Returns a buffer
    pointer in strptr and the length available. This allows for hardware that
    needs to use functions like insl or mencpy_fromio.

    Signed-off-by: Alan Cox
    Cc: Paul Fulghum
    Signed-off-by: Hirokazu Takata
    Signed-off-by: Serge Hallyn
    Signed-off-by: Jeff Dike
    Signed-off-by: John Hawkes
    Signed-off-by: Martin Schwidefsky
    Signed-off-by: Adrian Bunk
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Alan Cox
     

29 Jun, 2005

1 commit

27 Jun, 2005

1 commit

24 Jun, 2005

2 commits

25 Apr, 2005

1 commit

17 Apr, 2005

1 commit

  • 1da177e4c   Linux-2.6.12-rc2 ... Browse Code »

    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!

    Linus Torvalds