Eric Lee / smarc-fsl-linux-kernel

15 Jun, 2017

1 commit

  • e0733e975   firmware: dmi: Fix permissions of product_family ... Browse Code »

    This is not sensitive information like serial numbers, we can allow
    all users to read it.

    Fix odd alignment while we're here.

    Signed-off-by: Jean Delvare
    Fixes: c61872c9833d ("firmware: dmi: Add DMI_PRODUCT_FAMILY identification string")
    Reviewed-by: Andy Shevchenko
    Reviewed-by: Mika Westerberg
    Cc: Dmitry Torokhov
    Cc: Linus Walleij

    Jean Delvare
     

23 May, 2017

1 commit

  • c61872c98   firmware: dmi: Add DMI_PRODUCT_FAMILY identification string ... Browse Code »

    Sometimes it is more convenient to be able to match a whole family of
    products, like in case of bunch of Chromebooks based on Intel_Strago to
    apply a driver quirk instead of quirking each machine one-by-one.

    This adds support for DMI_PRODUCT_FAMILY identification string and also
    exports it to the userspace through sysfs attribute just like the
    existing ones.

    Suggested-by: Dmitry Torokhov
    Signed-off-by: Mika Westerberg
    Reviewed-by: Andy Shevchenko
    Signed-off-by: Linus Walleij

    Mika Westerberg
     

08 Sep, 2016

1 commit

06 Aug, 2010

1 commit

30 Mar, 2010

1 commit

  • 5a0e3ad6a   include cleanup: Update gfp.h and slab.h includes to prepare for breaking implic… ... Browse Code »

    …it slab.h inclusion from percpu.h

    percpu.h is included by sched.h and module.h and thus ends up being
    included when building most .c files. percpu.h includes slab.h which
    in turn includes gfp.h making everything defined by the two files
    universally available and complicating inclusion dependencies.

    percpu.h -> slab.h dependency is about to be removed. Prepare for
    this change by updating users of gfp and slab facilities include those
    headers directly instead of assuming availability. As this conversion
    needs to touch large number of source files, the following script is
    used as the basis of conversion.

    http://userweb.kernel.org/~tj/misc/slabh-sweep.py

    The script does the followings.

    * Scan files for gfp and slab usages and update includes such that
    only the necessary includes are there. ie. if only gfp is used,
    gfp.h, if slab is used, slab.h.

    * When the script inserts a new include, it looks at the include
    blocks and try to put the new include such that its order conforms
    to its surrounding. It's put in the include block which contains
    core kernel includes, in the same order that the rest are ordered -
    alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
    doesn't seem to be any matching order.

    * If the script can't find a place to put a new include (mostly
    because the file doesn't have fitting include block), it prints out
    an error message indicating which .h file needs to be added to the
    file.

    The conversion was done in the following steps.

    1. The initial automatic conversion of all .c files updated slightly
    over 4000 files, deleting around 700 includes and adding ~480 gfp.h
    and ~3000 slab.h inclusions. The script emitted errors for ~400
    files.

    2. Each error was manually checked. Some didn't need the inclusion,
    some needed manual addition while adding it to implementation .h or
    embedding .c file was more appropriate for others. This step added
    inclusions to around 150 files.

    3. The script was run again and the output was compared to the edits
    from #2 to make sure no file was left behind.

    4. Several build tests were done and a couple of problems were fixed.
    e.g. lib/decompress_*.c used malloc/free() wrappers around slab
    APIs requiring slab.h to be added manually.

    5. The script was run on all .h files but without automatically
    editing them as sprinkling gfp.h and slab.h inclusions around .h
    files could easily lead to inclusion dependency hell. Most gfp.h
    inclusion directives were ignored as stuff from gfp.h was usually
    wildly available and often used in preprocessor macros. Each
    slab.h inclusion directive was examined and added manually as
    necessary.

    6. percpu.h was updated not to include slab.h.

    7. Build test were done on the following configurations and failures
    were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
    distributed build env didn't work with gcov compiles) and a few
    more options had to be turned off depending on archs to make things
    build (like ipr on powerpc/64 which failed due to missing writeq).

    * x86 and x86_64 UP and SMP allmodconfig and a custom test config.
    * powerpc and powerpc64 SMP allmodconfig
    * sparc and sparc64 SMP allmodconfig
    * ia64 SMP allmodconfig
    * s390 SMP allmodconfig
    * alpha SMP allmodconfig
    * um on x86_64 SMP allmodconfig

    8. percpu.h modifications were reverted so that it could be applied as
    a separate patch and serve as bisection point.

    Given the fact that I had only a couple of failures from tests on step
    6, I'm fairly confident about the coverage of this conversion patch.
    If there is a breakage, it's likely to be something in one of the arch
    headers which should be easily discoverable easily on most builds of
    the specific arch.

    Signed-off-by: Tejun Heo <tj@kernel.org>
    Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
    Cc: Ingo Molnar <mingo@redhat.com>
    Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>

    Tejun Heo
     

16 Sep, 2009

1 commit

07 Jan, 2009

1 commit

07 Feb, 2008

1 commit

24 Jan, 2008

1 commit

09 Jan, 2008

1 commit

  • ce8c628ab   dmi-id: fix for __you_cannot_kmalloc_that_much failure ... Browse Code »

    gcc 3.2 has a hard time coping with the code in dmi_id_init():

    drivers/built-in.o(.init.text+0x789e): In function `dmi_id_init':
    : undefined reference to `__you_cannot_kmalloc_that_much'
    make: *** [.tmp_vmlinux1] Error 1

    Moving half of the code to a separate function seems to help. This is a
    no-op for gcc 4.1 which will successfully inline the code anyway.

    Signed-off-by: Jean Delvare
    Cc: Dave Airlie
    Tested-by: Kamalesh Babulal
    Signed-off-by: Andrew Morton
    Signed-off-by: Linus Torvalds

    Jean Delvare
     

13 Oct, 2007

3 commits

  • 34b51f39e   dmi-id: Possible cleanup ... Browse Code »

    The DEFINE_DMI_ATTR macro has a single user left so we can expand it
    for slightly shorter/simpler code.

    Signed-off-by: Jean Delvare
    Acked-by: Lennart Poettering
    Signed-off-by: Greg Kroah-Hartman

    Jean Delvare
     
  • 637447566   dmi-id: Use dynamic sysfs attributes ... Browse Code »

    We can use sysfs attributes with an extra parameter for dmi id
    attributes. This makes it possible to use the same callback function
    for all attributes, reducing the binary size significantly (-18% on
    x86_64.)

    Signed-off-by: Jean Delvare
    Acked-by: Lennart Poettering
    Signed-off-by: Greg Kroah-Hartman

    Jean Delvare
     
  • 7eff2e7a8   Driver core: change add_uevent_var to use a struct ... Browse Code »

    This changes the uevent buffer functions to use a struct instead of a
    long list of parameters. It does no longer require the caller to do the
    proper buffer termination and size accounting, which is currently wrong
    in some places. It fixes a known bug where parts of the uevent
    environment are overwritten because of wrong index calculations.

    Many thanks to Mathieu Desnoyers for finding bugs and improving the
    error handling.

    Signed-off-by: Kay Sievers
    Cc: Mathieu Desnoyers
    Cc: Cornelia Huck
    Signed-off-by: Greg Kroah-Hartman

    Kay Sievers
     

12 Jul, 2007

1 commit

  • 4f5c791a8   DMI-based module autoloading ... Browse Code »

    The patch below adds DMI/SMBIOS based module autoloading to the Linux
    kernel. The idea is to load laptop drivers automatically (and other
    drivers which cannot be autoloaded otherwise), based on the DMI system
    identification information of the BIOS.

    Right now most distros manually try to load all available laptop
    drivers on bootup in the hope that at least one of them loads
    successfully. This patch does away with all that, and uses udev to
    automatically load matching drivers on the right machines.

    Basically the patch just exports the DMI information that has been
    parsed by the kernel anyway to userspace via a sysfs device
    /sys/class/dmi/id and makes sure that proper modalias attributes are
    available. Besides adding the "modalias" attribute it also adds
    attributes for a few other DMI fields which might be useful for
    writing udev rules.

    This patch is not an attempt to export the entire DMI/SMBIOS data to
    userspace. We already have "dmidecode" which parses the complete DMI
    info from userspace. The purpose of this patch is machine model
    identification and good udev integration.

    To take advantage of DMI based module autoloading, a driver should
    export one or more MODULE_ALIAS fields similar to these:

    MODULE_ALIAS("dmi:*:svnMICRO-STARINT'LCO.,LTD:pnMS-1013:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
    MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1058:pvr0581:rvnMSI:rnMS-1058:*:ct10:*");
    MODULE_ALIAS("dmi:*:svnMicro-StarInternational:pnMS-1412:*:rvnMSI:rnMS-1412:*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");
    MODULE_ALIAS("dmi:*:svnNOTEBOOK:pnSAM2000:pvr0131*:cvnMICRO-STARINT'LCO.,LTD:ct10:*");

    These lines are specific to my msi-laptop.c driver. They are basically
    just a concatenation of a few carefully selected DMI fields with all
    potentially bad characters stripped.

    Besides laptop drivers, modules like "hdaps", the i2c modules
    and the hwmon modules are good candidates for "dmi:" MODULE_ALIAS
    lines.

    Besides merely exporting the DMI data via sysfs the patch adds
    support for a few more DMI fields. Especially the CHASSIS fields are
    very useful to identify different laptop modules. The patch also adds
    working MODULE_ALIAS lines to my msi-laptop.c driver.

    I'd like to thank Kay Sievers for helping me to clean up this patch
    for posting it on lkml.

    Patch is against Linus' current GIT HEAD. Should probably apply to
    older kernels as well without modification.

    Signed-off-by: Lennart Poettering
    Signed-off-by: Kay Sievers
    Signed-off-by: Greg Kroah-Hartman

    Lennart Poettering