Eric Lee / smarc-fsl-linux-kernel

19 Jul, 2006

1 commit

07 Jul, 2006

1 commit

04 Jul, 2006

2 commits

  • 3aceafc1e   [PATCH] lockdep: annotate serio ... Browse Code »

    The PS/2 code has a natural device order and there is a one level recursion in
    this device order in terms of the cmd_mutex; annotate this explicit recursion
    as ok.

    Has no effect on non-lockdep kernels.

    Signed-off-by: Arjan van de Ven
    Cc: Dmitry Torokhov
    Cc: Ingo Molnar
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Arjan van de Ven
     
  • 6b8f3ef45   [PATCH] sparc i8042 build fix ... Browse Code »

    drivers/input/serio/i8042-sparcio.h:91: error: '__mod_of_device_table' aliased to undefined symbol 'i8042_match'

    Cc: Dmitry Torokhov
    DESC
    sparc: resource warning fix
    EDESC
    From: Andrew Morton

    sound/sparc/amd7930.c: In function 'amd7930_attach_common':
    sound/sparc/amd7930.c:1040: warning: format '%08lx' expects type 'long unsigned int', but argument 5 has type 'resource_size_t'

    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Andrew Morton
     

03 Jul, 2006

1 commit

01 Jul, 2006

1 commit

30 Jun, 2006

2 commits

  • f57caaefa   [SERIO] i8042-sparcio.h: Convert to of_driver framework. ... Browse Code »

    Signed-off-by: David S. Miller

    David S. Miller
     
  • 602cada85   Merge git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6 ... Browse Code »

    * git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/devfs-2.6: (22 commits)
    [PATCH] devfs: Remove it from the feature_removal.txt file
    [PATCH] devfs: Last little devfs cleanups throughout the kernel tree.
    [PATCH] devfs: Rename TTY_DRIVER_NO_DEVFS to TTY_DRIVER_DYNAMIC_DEV
    [PATCH] devfs: Remove the tty_driver devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the line_driver devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the videodevice devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the gendisk devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the miscdevice devfs_name field as it's no longer needed
    [PATCH] devfs: Remove the devfs_fs_kernel.h file from the tree
    [PATCH] devfs: Remove devfs_remove() function from the kernel tree
    [PATCH] devfs: Remove devfs_mk_cdev() function from the kernel tree
    [PATCH] devfs: Remove devfs_mk_bdev() function from the kernel tree
    [PATCH] devfs: Remove devfs_mk_symlink() function from the kernel tree
    [PATCH] devfs: Remove devfs_mk_dir() function from the kernel tree
    [PATCH] devfs: Remove devfs_*_tape() functions from the kernel tree
    [PATCH] devfs: Remove devfs support from the sound subsystem
    [PATCH] devfs: Remove devfs support from the ide subsystem.
    [PATCH] devfs: Remove devfs support from the serial subsystem
    [PATCH] devfs: Remove devfs from the init code
    [PATCH] devfs: Remove devfs from the partition code
    ...

    Linus Torvalds
     

28 Jun, 2006

1 commit

27 Jun, 2006

1 commit

24 Jun, 2006

1 commit

28 Apr, 2006

1 commit

  • 1269277a5   [PATCH] powerpc: Use check_legacy_ioport() on ppc32 too. ... Browse Code »

    Some people report that we die on some Macs when we are expecting to
    catch machine checks after poking at some random I/O address. I'd seen
    it happen on my dual G4 with serial ports until we fixed those to use
    OF, but now other users are reporting it with i8042.

    This expands the use of check_legacy_ioport() to avoid that situation
    even on 32-bit kernels.

    Signed-off-by: David Woodhouse
    Signed-off-by: Paul Mackerras

    David Woodhouse
     

02 Apr, 2006

1 commit

31 Mar, 2006

1 commit

27 Mar, 2006

1 commit

25 Mar, 2006

1 commit

14 Mar, 2006

3 commits

19 Feb, 2006

2 commits

15 Feb, 2006

1 commit

15 Jan, 2006

2 commits

14 Jan, 2006

2 commits

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
     

09 Jan, 2006

1 commit

08 Jan, 2006

2 commits

07 Jan, 2006

2 commits

06 Jan, 2006

2 commits

05 Jan, 2006

1 commit

04 Jan, 2006

1 commit

  • a8d3584a2   [ARM] Remove clk_use()/clk_unuse() ... Browse Code »

    It seems that clk_use() and clk_unuse() are additional complexity
    which isn't required anymore. Remove them from the clock framework
    to avoid the additional confusion which they cause, and update all
    ARM machine types except for OMAP.

    Signed-off-by: Russell King

    Russell King
     

28 Dec, 2005

4 commits