02 Nov, 2017

1 commit

• b24413180   License cleanup: add SPDX GPL-2.0 license identifier to files with no license ... Browse Code »

  Many source files in the tree are missing licensing information, which
  makes it harder for compliance tools to determine the correct license.

  By default all files without license information are under the default
  license of the kernel, which is GPL version 2.

  Update the files which contain no license information with the 'GPL-2.0'
  SPDX license identifier. The SPDX identifier is a legally binding
  shorthand, which can be used instead of the full boiler plate text.

  This patch is based on work done by Thomas Gleixner and Kate Stewart and
  Philippe Ombredanne.

  How this work was done:

  Patches were generated and checked against linux-4.14-rc6 for a subset of
  the use cases:
  - file had no licensing information it it.
  - file was a */uapi/* one with no licensing information in it,
  - file was a */uapi/* one with existing licensing information,

  Further patches will be generated in subsequent months to fix up cases
  where non-standard license headers were used, and references to license
  had to be inferred by heuristics based on keywords.

  The analysis to determine which SPDX License Identifier to be applied to
  a file was done in a spreadsheet of side by side results from of the
  output of two independent scanners (ScanCode & Windriver) producing SPDX
  tag:value files created by Philippe Ombredanne. Philippe prepared the
  base worksheet, and did an initial spot review of a few 1000 files.

  The 4.13 kernel was the starting point of the analysis with 60,537 files
  assessed. Kate Stewart did a file by file comparison of the scanner
  results in the spreadsheet to determine which SPDX license identifier(s)
  to be applied to the file. She confirmed any determination that was not
  immediately clear with lawyers working with the Linux Foundation.

  Criteria used to select files for SPDX license identifier tagging was:
  - Files considered eligible had to be source code files.
  - Make and config files were included as candidates if they contained >5
  lines of source
  - File already had some variant of a license header in it (even if
  Reviewed-by: Philippe Ombredanne
  Reviewed-by: Thomas Gleixner
  Signed-off-by: Greg Kroah-Hartman

  Greg Kroah-Hartman

  2017-11-02 18:10:55 +0800  

23 Jul, 2011

1 commit

• a87e553fa   asm-generic: delay.h fix udelay and ndelay for 8 bit args ... Browse Code »

  With a non-constant 8-bit argument, a call to udelay() generates a warning:

  drivers/gpu/drm/radeon/atom.c: In function 'atom_op_delay':
  drivers/gpu/drm/radeon/atom.c:654: warning: comparison is always false due to limited range of data type

  The code looks like it works OK with an 8-bit arg, and the calling code is
  doing nothing wrong, so udelay() needs fixing.

  Fixing it was rather tricky. Simply typecasting `n' in the comparison with
  20000 didn't change anything. Hence the divide-by-20000 trick.

  Using a do{}while loop didn't work because udelay() is used in ?: statements,
  hence the ({...}) construct.

  While I was there I replaced the brain-bending ?:?:?: mess with nice if/else
  code.

  Probably other architectures are generating the same warning and can use a
  similar change.

  [Taken from the x86 tree and moved to asm-generic by Jonas Bonn]

  Cc: Ingo Molnar
  Cc: Thomas Gleixner
  Cc: "H. Peter Anvin"
  Cc:
  Signed-off-by: Andrew Morton
  Signed-off-by: Jonas Bonn

  Andrew Morton

  2011-07-23 00:45:33 +0800  

08 Jul, 2011

1 commit

• 30ab2b034   asm-generic: adapt delay.h to common implementation ... Browse Code »

  Several architectures are using a common delay.h implementation that
  appears to have originated with the x86 architecture. This common
  implementation is a bit fuller than the current asm-generic version
  and has some compile-time checks that should be interesting for all
  architectures.

  This patch takes the common delay.h version and replaces the rather
  trivial asm-generic version with it. As no architecture was actually
  using asm-generic/delay.h, this change is rather innocuous; it will,
  however, allow us to switch at least four architectures over to using
  the asm-generic version.

  Signed-off-by: Jonas Bonn
  Acked-by: Arnd Bergmann

  Jonas Bonn

  2011-07-08 02:11:39 +0800  

12 Jun, 2009

1 commit

• aafe4dbed   asm-generic: add generic versions of common headers ... Browse Code »

  These are all kernel internal interfaces that get copied
  around a lot. In most cases, architectures can provide
  their own optimized versions, but these generic versions
  can work as well.

  I have tried to use the most common contents of each
  header to allow existing architectures to migrate easily.

  Thanks to Remis for suggesting a number of cleanups.

  Signed-off-by: Remis Lima Baima
  Signed-off-by: Arnd Bergmann

  Arnd Bergmann

  2009-06-12 03:02:37 +0800