Doug / smarc-fsl-linux-kernel

30 Oct, 2010

1 commit

  • 468ffde46   WATCHDOG: octeon-wdt: Use I/O clock rate for timing calculations. ... Browse Code »

    The creation of the I/O clock domain requires some adjustments. Since
    the watchdog counters are clocked by the I/O clock, use its rate for
    timing calculations.

    Signed-off-by: David Daney
    Cc: Wim Van Sebroeck
    Cc: linux-watchdog@vger.kernel.org
    Patchwork: http://patchwork.linux-mips.org/patch/1659/
    Acked-by: Wim Van Sebroeck
    Signed-off-by: Ralf Baechle

    David Daney
     

29 Oct, 2010

11 commits

26 Oct, 2010

1 commit

  • 7b6181e06   Merge branch 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 ... Browse Code »

    * 'omap-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: (163 commits)
    omap: complete removal of machine_desc.io_pg_offst and .phys_io
    omap: UART: fix wakeup registers for OMAP24xx UART2
    omap: Fix spotty MMC voltages
    ASoC: OMAP4: MCPDM: Remove unnecessary include of plat/control.h
    serial: omap-serial: fix signess error
    OMAP3: DMA: Errata i541: sDMA FIFO draining does not finish
    omap: dma: Fix buffering disable bit setting for omap24xx
    omap: serial: Fix the boot-up crash/reboot without CONFIG_PM
    OMAP3: PM: fix scratchpad memory accesses for off-mode
    omap4: pandaboard: enable the ehci port on pandaboard
    omap4: pandaboard: Fix the init if CONFIG_MMC_OMAP_HS is not set
    omap4: pandaboard: remove unused hsmmc definition
    OMAP: McBSP: Remove null omap44xx ops comment
    OMAP: McBSP: Swap CLKS source definition
    OMAP: McBSP: Fix CLKR and FSR signal muxing
    OMAP2+: clock: reduce the amount of standard debugging while disabling unused clocks
    OMAP: control: move plat-omap/control.h to mach-omap2/control.h
    OMAP: split plat-omap/common.c
    OMAP: McBSP: implement functional clock switching via clock framework
    OMAP: McBSP: implement McBSP CLKR and FSR signal muxing via mach-omap2/mcbsp.c
    ...

    Fixed up trivial conflicts in arch/arm/mach-omap2/
    {board-zoom-peripherals.c,devices.c} as per Tony

    Linus Torvalds
     

23 Oct, 2010

2 commits

  • 092e0e7e5   Merge branch 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl ... Browse Code »

    * 'llseek' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:
    vfs: make no_llseek the default
    vfs: don't use BKL in default_llseek
    llseek: automatically add .llseek fop
    libfs: use generic_file_llseek for simple_attr
    mac80211: disallow seeks in minstrel debug code
    lirc: make chardev nonseekable
    viotape: use noop_llseek
    raw: use explicit llseek file operations
    ibmasmfs: use generic_file_llseek
    spufs: use llseek in all file operations
    arm/omap: use generic_file_llseek in iommu_debug
    lkdtm: use generic_file_llseek in debugfs
    net/wireless: use generic_file_llseek in debugfs
    drm: use noop_llseek

    Linus Torvalds
     
  • c37927d43   Merge branch 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl ... Browse Code »

    * 'trivial' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/bkl:
    block: autoconvert trivial BKL users to private mutex
    drivers: autoconvert trivial BKL users to private mutex
    ipmi: autoconvert trivial BKL users to private mutex
    mac: autoconvert trivial BKL users to private mutex
    mtd: autoconvert trivial BKL users to private mutex
    scsi: autoconvert trivial BKL users to private mutex

    Fix up trivial conflicts (due to addition of private mutex right next to
    deletion of a version string) in drivers/char/pcmcia/cm40[04]0_cs.c

    Linus Torvalds
     

22 Oct, 2010

1 commit

  • d4429f608   Merge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc ... Browse Code »

    * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: (71 commits)
    powerpc/44x: Update ppc44x_defconfig
    powerpc/watchdog: Make default timeout for Book-E watchdog a Kconfig option
    fsl_rio: Add comments for sRIO registers.
    powerpc/fsl-booke: Add e55xx (64-bit) smp defconfig
    powerpc/fsl-booke: Add p5020 DS board support
    powerpc/fsl-booke64: Use TLB CAMs to cover linear mapping on FSL 64-bit chips
    powerpc/fsl-booke: Add support for FSL Arch v1.0 MMU in setup_page_sizes
    powerpc/fsl-booke: Add support for FSL 64-bit e5500 core
    powerpc/85xx: add cache-sram support
    powerpc/85xx: add ngPIXIS FPGA device tree node to the P1022DS board
    powerpc: Fix compile error with paca code on ppc64e
    powerpc/fsl-booke: Add p3041 DS board support
    oprofile/fsl emb: Don't set MSR[PMM] until after clearing the interrupt.
    powerpc/fsl-booke: Add PCI device ids for P2040/P3041/P5010/P5020 QoirQ chips
    powerpc/mpc8xxx_gpio: Add support for 'qoriq-gpio' controllers
    powerpc/fsl_booke: Add support to boot from core other than 0
    powerpc/p1022: Add probing for individual DMA channels
    powerpc/fsl_soc: Search all global-utilities nodes for rstccr
    powerpc: Fix invalid page flags in create TLB CAM path for PTE_64BIT
    powerpc/mpc83xx: Support for MPC8308 P1M board
    ...

    Fix up conflict with the generic irq_work changes in arch/powerpc/kernel/time.c

    Linus Torvalds
     

15 Oct, 2010

1 commit

  • 6038f373a   llseek: automatically add .llseek fop ... Browse Code »

    All file_operations should get a .llseek operation so we can make
    nonseekable_open the default for future file operations without a
    .llseek pointer.

    The three cases that we can automatically detect are no_llseek, seq_lseek
    and default_llseek. For cases where we can we can automatically prove that
    the file offset is always ignored, we use noop_llseek, which maintains
    the current behavior of not returning an error from a seek.

    New drivers should normally not use noop_llseek but instead use no_llseek
    and call nonseekable_open at open time. Existing drivers can be converted
    to do the same when the maintainer knows for certain that no user code
    relies on calling seek on the device file.

    The generated code is often incorrectly indented and right now contains
    comments that clarify for each added line why a specific variant was
    chosen. In the version that gets submitted upstream, the comments will
    be gone and I will manually fix the indentation, because there does not
    seem to be a way to do that using coccinelle.

    Some amount of new code is currently sitting in linux-next that should get
    the same modifications, which I will do at the end of the merge window.

    Many thanks to Julia Lawall for helping me learn to write a semantic
    patch that does all this.

    ===== begin semantic patch =====
    // This adds an llseek= method to all file operations,
    // as a preparation for making no_llseek the default.
    //
    // The rules are
    // - use no_llseek explicitly if we do nonseekable_open
    // - use seq_lseek for sequential files
    // - use default_llseek if we know we access f_pos
    // - use noop_llseek if we know we don't access f_pos,
    // but we still want to allow users to call lseek
    //
    @ open1 exists @
    identifier nested_open;
    @@
    nested_open(...)
    {

    }

    @ open exists@
    identifier open_f;
    identifier i, f;
    identifier open1.nested_open;
    @@
    int open_f(struct inode *i, struct file *f)
    {

    }

    @ read disable optional_qualifier exists @
    identifier read_f;
    identifier f, p, s, off;
    type ssize_t, size_t, loff_t;
    expression E;
    identifier func;
    @@
    ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
    {

    }

    @ read_no_fpos disable optional_qualifier exists @
    identifier read_f;
    identifier f, p, s, off;
    type ssize_t, size_t, loff_t;
    @@
    ssize_t read_f(struct file *f, char *p, size_t s, loff_t *off)
    {
    ... when != off
    }

    @ write @
    identifier write_f;
    identifier f, p, s, off;
    type ssize_t, size_t, loff_t;
    expression E;
    identifier func;
    @@
    ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
    {

    }

    @ write_no_fpos @
    identifier write_f;
    identifier f, p, s, off;
    type ssize_t, size_t, loff_t;
    @@
    ssize_t write_f(struct file *f, const char *p, size_t s, loff_t *off)
    {
    ... when != off
    }

    @ fops0 @
    identifier fops;
    @@
    struct file_operations fops = {
    ...
    };

    @ has_llseek depends on fops0 @
    identifier fops0.fops;
    identifier llseek_f;
    @@
    struct file_operations fops = {
    ...
    .llseek = llseek_f,
    ...
    };

    @ has_read depends on fops0 @
    identifier fops0.fops;
    identifier read_f;
    @@
    struct file_operations fops = {
    ...
    .read = read_f,
    ...
    };

    @ has_write depends on fops0 @
    identifier fops0.fops;
    identifier write_f;
    @@
    struct file_operations fops = {
    ...
    .write = write_f,
    ...
    };

    @ has_open depends on fops0 @
    identifier fops0.fops;
    identifier open_f;
    @@
    struct file_operations fops = {
    ...
    .open = open_f,
    ...
    };

    // use no_llseek if we call nonseekable_open
    ////////////////////////////////////////////
    @ nonseekable1 depends on !has_llseek && has_open @
    identifier fops0.fops;
    identifier nso ~= "nonseekable_open";
    @@
    struct file_operations fops = {
    ... .open = nso, ...
    +.llseek = no_llseek, /* nonseekable */
    };

    @ nonseekable2 depends on !has_llseek @
    identifier fops0.fops;
    identifier open.open_f;
    @@
    struct file_operations fops = {
    ... .open = open_f, ...
    +.llseek = no_llseek, /* open uses nonseekable */
    };

    // use seq_lseek for sequential files
    /////////////////////////////////////
    @ seq depends on !has_llseek @
    identifier fops0.fops;
    identifier sr ~= "seq_read";
    @@
    struct file_operations fops = {
    ... .read = sr, ...
    +.llseek = seq_lseek, /* we have seq_read */
    };

    // use default_llseek if there is a readdir
    ///////////////////////////////////////////
    @ fops1 depends on !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
    identifier fops0.fops;
    identifier readdir_e;
    @@
    // any other fop is used that changes pos
    struct file_operations fops = {
    ... .readdir = readdir_e, ...
    +.llseek = default_llseek, /* readdir is present */
    };

    // use default_llseek if at least one of read/write touches f_pos
    /////////////////////////////////////////////////////////////////
    @ fops2 depends on !fops1 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
    identifier fops0.fops;
    identifier read.read_f;
    @@
    // read fops use offset
    struct file_operations fops = {
    ... .read = read_f, ...
    +.llseek = default_llseek, /* read accesses f_pos */
    };

    @ fops3 depends on !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
    identifier fops0.fops;
    identifier write.write_f;
    @@
    // write fops use offset
    struct file_operations fops = {
    ... .write = write_f, ...
    + .llseek = default_llseek, /* write accesses f_pos */
    };

    // Use noop_llseek if neither read nor write accesses f_pos
    ///////////////////////////////////////////////////////////

    @ fops4 depends on !fops1 && !fops2 && !fops3 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
    identifier fops0.fops;
    identifier read_no_fpos.read_f;
    identifier write_no_fpos.write_f;
    @@
    // write fops use offset
    struct file_operations fops = {
    ...
    .write = write_f,
    .read = read_f,
    ...
    +.llseek = noop_llseek, /* read and write both use no f_pos */
    };

    @ depends on has_write && !has_read && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
    identifier fops0.fops;
    identifier write_no_fpos.write_f;
    @@
    struct file_operations fops = {
    ... .write = write_f, ...
    +.llseek = noop_llseek, /* write uses no f_pos */
    };

    @ depends on has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
    identifier fops0.fops;
    identifier read_no_fpos.read_f;
    @@
    struct file_operations fops = {
    ... .read = read_f, ...
    +.llseek = noop_llseek, /* read uses no f_pos */
    };

    @ depends on !has_read && !has_write && !fops1 && !fops2 && !has_llseek && !nonseekable1 && !nonseekable2 && !seq @
    identifier fops0.fops;
    @@
    struct file_operations fops = {
    ...
    +.llseek = noop_llseek, /* no read or write fn */
    };
    ===== End semantic patch =====

    Signed-off-by: Arnd Bergmann
    Cc: Julia Lawall
    Cc: Christoph Hellwig

    Arnd Bergmann
     

14 Oct, 2010

2 commits

  • e0dc09ff9   powerpc/watchdog: Make default timeout for Book-E watchdog a Kconfig option ... Browse Code »

    The PowerPC Book-E watchdog driver (booke_wdt.c) defines a default timeout
    value in the code based on whether it's a Freescale Book-E part of not.
    Instead of having hard-coded values in the driver, make it a Kconfig
    option.

    As newer chips gets faster, the current default values become less
    appropriate, since the timeout sometimes occurs before the kernel finishes
    booting. Making the value a Kconfig option allows BSPs to configure a new
    value without requiring the wdt_period command-line parameter to be set.

    Signed-off-by: Timur Tabi
    Signed-off-by: Kumar Gala

    Timur Tabi
     
  • fbdd7144c   powerpc/watchdog: Allow the Book-E driver to be compiled as a module ... Browse Code »

    Register the __init and __exit functions in the PowerPC Book-E Watchdog
    driver as module entry/exit functions, and modify the Kconfig entry.

    Add a .release method for the PowerPC Book-E Watchdog driver, so that the
    watchdog is disabled when the driver is closed.

    Loosely based on original code from Jiang Yutang .

    Signed-off-by: Timur Tabi
    Signed-off-by: Kumar Gala

    Timur Tabi
     

07 Oct, 2010

1 commit

  • ca4d3e674   MIPS: Add missing #inclusions of <linux/irq.h> ... Browse Code »

    Add missing #inclusions of to a whole bunch of files that should
    really include it. Note that this can replace #inclusions of .

    This is required for the patch to sort out irqflags handling function naming to
    compile on MIPS.

    The problem is that these files require access to things like setup_irq() -
    which isn't available by #including

    Signed-off-by: David Howells
    Acked-by: Ralf Baechle

    David Howells
     

05 Oct, 2010

1 commit

  • 613655fa3   drivers: autoconvert trivial BKL users to private mutex ... Browse Code »

    All these files use the big kernel lock in a trivial
    way to serialize their private file operations,
    typically resulting from an earlier semi-automatic
    pushdown from VFS.

    None of these drivers appears to want to lock against
    other code, and they all use the BKL as the top-level
    lock in their file operations, meaning that there
    is no lock-order inversion problem.

    Consequently, we can remove the BKL completely,
    replacing it with a per-file mutex in every case.
    Using a scripted approach means we can avoid
    typos.

    These drivers do not seem to be under active
    maintainance from my brief investigation. Apologies
    to those maintainers that I have missed.

    file=$1
    name=$2
    if grep -q lock_kernel ${file} ; then
    if grep -q 'include.*linux.mutex.h' ${file} ; then
    sed -i '/include.*/d' ${file}
    else
    sed -i 's/include.*.*$/include /g' ${file}
    fi
    sed -i ${file} \
    -e "/^#include.*linux.mutex.h/,$ {
    1,/^\(static\|int\|long\)/ {
    /^\(static\|int\|long\)/istatic DEFINE_MUTEX(${name}_mutex);

    } }" \
    -e "s/\(un\)*lock_kernel\>[ ]*()/mutex_\1lock(\&${name}_mutex)/g" \
    -e '/[ ]*cycle_kernel_lock();/d'
    else
    sed -i -e '/include.*\/d' ${file} \
    -e '/cycle_kernel_lock()/d'
    fi

    Signed-off-by: Arnd Bergmann

    Arnd Bergmann
     

30 Sep, 2010

1 commit

16 Sep, 2010

3 commits

14 Aug, 2010

12 commits

13 Aug, 2010

1 commit

09 Aug, 2010

2 commits