Eric Lee / smarc-fsl-linux-kernel

19 Nov, 2011

1 commit

22 Jul, 2010

1 commit

27 Feb, 2010

1 commit

30 Nov, 2008

2 commits

  • a418b893a   Bluetooth: Enable per-module dynamic debug messages ... Browse Code »

    With the introduction of CONFIG_DYNAMIC_PRINTK_DEBUG it is possible to
    allow debugging without having to recompile the kernel. This patch turns
    all BT_DBG() calls into pr_debug() to support dynamic debug messages.

    As a side effect all CONFIG_BT_*_DEBUG statements are now removed and
    some broken debug entries have been fixed.

    Signed-off-by: Marcel Holtmann

    Marcel Holtmann
     
  • 7a9d40205   Bluetooth: Send HCI Reset command by default on device initialization ... Browse Code »

    The Bluetooth subsystem was not using the HCI Reset command when doing
    device initialization. The Bluetooth 1.0b specification was ambiguous
    on how the device firmware was suppose to handle it. Almost every device
    was triggering a transport reset at the same time. In case of USB this
    ended up in disconnects from the bus.

    All modern Bluetooth dongles handle this perfectly fine and a lot of
    them actually require that HCI Reset is sent. If not then they are
    either stuck in their HID Proxy mode or their internal structures for
    inquiry and paging are not correctly setup.

    To handle old and new devices smoothly the Bluetooth subsystem contains
    a quirk to force the HCI Reset on initialization. However maintaining
    such a quirk becomes more and more complicated. This patch turns the
    logic around and lets the old devices disable the HCI Reset command.

    The only device where the HCI_QUIRK_NO_RESET is still needed are the
    original Digianswer devices and dongles with an early CSR firmware.

    CSR reported that they fixed this for version 12 firmware. The last
    official release of version 11 firmware is build ID 115. The first
    version 12 candidate was build ID 117.

    Signed-off-by: Marcel Holtmann

    Marcel Holtmann
     

31 Oct, 2008

1 commit

06 Oct, 2008

1 commit

08 Aug, 2008

1 commit

05 Feb, 2008

1 commit

22 Oct, 2007

1 commit

26 Apr, 2007

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
     

01 Jul, 2006

1 commit

05 Jan, 2006

1 commit

09 Nov, 2005

1 commit

07 Nov, 2005

1 commit

29 Oct, 2005

1 commit

09 Oct, 2005

1 commit

  • dd0fc66fb   [PATCH] gfp flags annotations - part 1 ... Browse Code »

    - added typedef unsigned int __nocast gfp_t;

    - replaced __nocast uses for gfp flags with gfp_t - it gives exactly
    the same warnings as far as sparse is concerned, doesn't change
    generated code (from gcc point of view we replaced unsigned int with
    typedef) and documents what's going on far better.

    Signed-off-by: Al Viro
    Signed-off-by: Linus Torvalds

    Al Viro
     

30 Aug, 2005

2 commits

06 Aug, 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