Eric Lee / smarc-fsl-linux-kernel

01 Nov, 2011

1 commit

  • eb5589a8f   include: convert various register fcns to macros to avoid include chaining ... Browse Code »

    The original implementations reference THIS_MODULE in an inline.
    We could include , but it is better to avoid chaining.

    Fortunately someone else already thought of this, and made a similar
    inline into a #define in for device_schedule_callback(),
    [see commit 523ded71de0] so follow that precedent here.

    Also bubble up any __must_check that were used on the prev. wrapper inline
    functions up one to the real __register functions, to preserve any prev.
    sanity checks that were used in those instances.

    Signed-off-by: Paul Gortmaker

    Paul Gortmaker
     

29 Sep, 2011

1 commit

19 Oct, 2010

1 commit

13 Oct, 2010

1 commit

14 Sep, 2010

2 commits

14 Apr, 2010

1 commit

22 Jan, 2010

1 commit

06 Jan, 2010

2 commits

  • ddf1ffbd4   Input: serio - let device core tell us if device was registered ... Browse Code »

    No need to keep track of it by ourselves.

    Signed-off-by: Dmitry Torokhov

    Dmitry Torokhov
     
  • 59b015133   Input: serio - fix potential deadlock when unbinding drivers ... Browse Code »

    sysfs_remove_group() waits for sysfs attributes to be removed, therefore
    we do not need to worry about driver-specific attributes being accessed
    after driver has been detached from the device. In fact, attempts to take
    serio->drv_mutex in attribute methods may lead to the following deadlock:

    sysfs_read_file()
    fill_read_buffer()
    sysfs_get_active_two()
    psmouse_attr_show_helper()
    serio_pin_driver()
    serio_disconnect_driver()
    mutex_lock(&serio->drv_mutex);
    mutex_lock(&serio_drv_mutex);
    psmouse_disconnect()
    sysfs_remove_group(... psmouse_attr_group);
    ....
    sysfs_deactivate();
    wait_for_completion();

    Fix this by removing calls to serio_[un]pin_driver() and functions themselves
    and using driver-private mutexes to serialize access to attribute's set()
    methods that may change device state.

    Signed-off-by: Eric W. Biederman
    Signed-off-by: Dmitry Torokhov

    Eric W. Biederman
     

27 Oct, 2009

1 commit

  • a5f523bc0   Input: add driver for Dynapro serial touchscreen ... Browse Code »

    This is a driver for Dynapro serial touchscreen, which used to be
    supported in Xorg. The driver needs updated inputattach utility to
    initialize serial port and create proper serio device before the
    driver will be bound to it.

    Signed-off-by: Tias Guns
    Signed-off-by: Dmitry Torokhov

    Tias Guns
     

27 Jul, 2009

1 commit

10 May, 2009

1 commit

08 Mar, 2009

1 commit

25 Nov, 2008

1 commit

24 Jul, 2008

1 commit

08 Jul, 2008

2 commits

30 Jun, 2008

1 commit

16 Apr, 2008

1 commit

  • 3e24e2b5a   Input: add Zhen Hua driver ... Browse Code »

    This is a driver for Zhen Hua PPM-4CH RC transmitter (commonly used in cheap
    Ready To Fly RC helicopters by Walkera) which using "Zhen Hua 5-byte protocol"
    for using them as a four axis joystick via serial port. Transmitter connected
    to serial port (19200 8N1) sending periodically 5 bytes where first byte is for
    synchronization and next four bytes are values of axis.

    Signed-off-by: Martin Kebert
    Signed-off-by: Jiri Kosina
    Signed-off-by: Dmitry Torokhov

    Martin Kebert
     

18 Jul, 2007

1 commit

  • 85f202d5d   Input: add driver for Fujitsu serial touchscreens ... Browse Code »

    These serial touchscreens are found on some Fujitsu lifebook
    P-series laptops, and the B6210. Using this requires a new
    version of inputattach and doing:

    inputattach -fjt /dev/ttyS0

    Big thanks to Stephen Hemminger for testing it and making it
    work on his B6210 laptop.

    Signed-off-by: Stephen Hemminger
    Signed-off-by: Dmitry Torokhov

    Dmitry Torokhov
     

12 Jul, 2007

1 commit

18 Feb, 2007

1 commit

08 Feb, 2007

1 commit

24 Nov, 2006

1 commit

  • ed7b1f6d6   Input: serio - make serio_register_driver() return errors ... Browse Code »

    Perform actual driver registration right in serio_register_driver()
    instead of offloading it to kseriod and return proper error code to
    callers if driver registration fails.

    Note that driver port matching is still done by kseriod to
    speed up boot process since probing for PS/2 mice and keyboards
    is pretty slow.

    Signed-off-by: Dmitry Torokhov

    Dmitry Torokhov
     

17 Nov, 2006

1 commit

11 Oct, 2006

1 commit

05 Oct, 2006

1 commit

  • 7d12e780e   IRQ: Maintain regs pointer globally rather than passing to IRQ handlers ... Browse Code »

    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: David Howells
    (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)

    David Howells
     

05 Aug, 2006

3 commits

02 Apr, 2006

1 commit

27 Mar, 2006

1 commit

19 Feb, 2006

1 commit

01 Jun, 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