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Author SHA1 Message Date
Jia-Ju Bai
de11731278 video: fbdev: aty: radeon_pm: Replace mdelay with msleep in radeonfb_pci_suspend 
radeonfb_pci_suspend() is never called in atomic context.

radeonfb_pci_suspend() is only set as ".suspend" in struct pci_driver.
This function is not called in atomic context.

Despite never getting called from atomic context, radeonfb_pci_suspend()
calls mdelay() to busily wait.
This is not necessary and can be replaced with msleep() 
and usleep_range() to avoid busy waiting.

This is found by a static analysis tool named DCNS written by myself.
And I also manually check it.

Signed-off-by: Jia-Ju Bai <baijiaju1990@gmail.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
 2018-04-24 18:11:21 +02:00
Linus Torvalds
e1d1ea549b fbdev changes for v4.15: 
- convert timers to use timer_setup() (Kees Cook, Thierry Reding)
 
 - fix panels support on iMX boards in mxsfb driver (Stefan Agner)
 
 - fix timeout on EDID read in udlfb driver (Ladislav Michl)
 
 - add missing modes to fix out of bounds access in controlfb driver
   (Geert Uytterhoeven)
 
 - update initialisation paths in sa1100fb driver to be more robust
   (Russell King)
 
 - fix error handling path of ->probe method in au1200fb driver
   (Christophe JAILLET)
 
 - fix handling of cases when either panel or crt is defined in sm501fb
   driver (Sudip Mukherjee, Colin Ian King)
 
 - add ability to the Goldfish FB driver to be recognized by OS via DT
   (Aleksandar Markovic)
 
 - structures constifications (Bhumika Goyal)
 
 - misc fixes (Allen Pais, Gustavo A. R. Silva, Dan Carpenter)
 
 - misc cleanups (Colin Ian King, Himanshu Jha, Markus Elfring)
 
 - remove dead igafb driver
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Merge tag 'fbdev-v4.15' of git://github.com/bzolnier/linux

Pull fbdev updates from Bartlomiej Zolnierkiewicz:
 "There is nothing really major here (though removal of the dead igafb
  driver stands out in diffstat).

  Summary:

   - convert timers to use timer_setup() (Kees Cook, Thierry Reding)

   - fix panels support on iMX boards in mxsfb driver (Stefan Agner)

   - fix timeout on EDID read in udlfb driver (Ladislav Michl)

   - add missing modes to fix out of bounds access in controlfb driver
     (Geert Uytterhoeven)

   - update initialisation paths in sa1100fb driver to be more robust
     (Russell King)

   - fix error handling path of ->probe method in au1200fb driver
     (Christophe JAILLET)

   - fix handling of cases when either panel or crt is defined in
     sm501fb driver (Sudip Mukherjee, Colin Ian King)

   - add ability to the Goldfish FB driver to be recognized by OS via DT
     (Aleksandar Markovic)

   - structures constifications (Bhumika Goyal)

   - misc fixes (Allen Pais, Gustavo A. R. Silva, Dan Carpenter)

   - misc cleanups (Colin Ian King, Himanshu Jha, Markus Elfring)

   - remove dead igafb driver"

* tag 'fbdev-v4.15' of git://github.com/bzolnier/linux: (42 commits)
  OMAPFB: prevent buffer underflow in omapfb_parse_vram_param()
  video: fbdev: sm501fb: fix potential null pointer dereference on fbi
  fbcon: Initialize ops->info early
  video: fbdev: Convert timers to use timer_setup()
  video: fbdev: pxa3xx_gcu: Convert timers to use timer_setup()
  fbdev: controlfb: Add missing modes to fix out of bounds access
  video: fbdev: sis_main: mark expected switch fall-throughs
  video: fbdev: cirrusfb: mark expected switch fall-throughs
  video: fbdev: aty: radeon_pm: mark expected switch fall-throughs
  video: fbdev: sm501fb: mark expected switch fall-through in sm501fb_blank_crt
  video: fbdev: intelfb: remove redundant variables
  video/fbdev/dnfb: Use common error handling code in dnfb_probe()
  sm501fb: suspend and resume fb if it exists
  sm501fb: unregister framebuffer only if registered
  sm501fb: deallocate colormap only if allocated
  video: goldfishfb: Add support for device tree bindings
  Documentation: Add device tree binding for Goldfish FB driver
  video: udlfb: Fix read EDID timeout
  video: fbdev: remove dead igafb driver
  video: fbdev: mxsfb: fix pixelclock polarity
  ...
 2017-11-20 21:50:24 -10:00
Gustavo A. R. Silva
0101f48ae5 video: fbdev: aty: radeon_pm: mark expected switch fall-throughs 
In preparation to enabling -Wimplicit-fallthrough, mark switch cases
where we are expecting to fall through.

Signed-off-by: Gustavo A. R. Silva <garsilva@embeddedor.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
 2017-11-09 18:09:32 +01:00
Greg Kroah-Hartman
b24413180f License cleanup: add SPDX GPL-2.0 license identifier to files with no license 
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 <5
   lines).

All documentation files were explicitly excluded.

The following heuristics were used to determine which SPDX license
identifiers to apply.

 - when both scanners couldn't find any license traces, file was
   considered to have no license information in it, and the top level
   COPYING file license applied.

   For non */uapi/* files that summary was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0                                              11139

   and resulted in the first patch in this series.

   If that file was a */uapi/* path one, it was "GPL-2.0 WITH
   Linux-syscall-note" otherwise it was "GPL-2.0".  Results of that was:

   SPDX license identifier                            # files
   ---------------------------------------------------|-------
   GPL-2.0 WITH Linux-syscall-note                        930

   and resulted in the second patch in this series.

 - if a file had some form of licensing information in it, and was one
   of the */uapi/* ones, it was denoted with the Linux-syscall-note if
   any GPL family license was found in the file or had no licensing in
   it (per prior point).  Results summary:

   SPDX license identifier                            # files
   ---------------------------------------------------|------
   GPL-2.0 WITH Linux-syscall-note                       270
   GPL-2.0+ WITH Linux-syscall-note                      169
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-2-Clause)    21
   ((GPL-2.0 WITH Linux-syscall-note) OR BSD-3-Clause)    17
   LGPL-2.1+ WITH Linux-syscall-note                      15
   GPL-1.0+ WITH Linux-syscall-note                       14
   ((GPL-2.0+ WITH Linux-syscall-note) OR BSD-3-Clause)    5
   LGPL-2.0+ WITH Linux-syscall-note                       4
   LGPL-2.1 WITH Linux-syscall-note                        3
   ((GPL-2.0 WITH Linux-syscall-note) OR MIT)              3
   ((GPL-2.0 WITH Linux-syscall-note) AND MIT)             1

   and that resulted in the third patch in this series.

 - when the two scanners agreed on the detected license(s), that became
   the concluded license(s).

 - when there was disagreement between the two scanners (one detected a
   license but the other didn't, or they both detected different
   licenses) a manual inspection of the file occurred.

 - In most cases a manual inspection of the information in the file
   resulted in a clear resolution of the license that should apply (and
   which scanner probably needed to revisit its heuristics).

 - When it was not immediately clear, the license identifier was
   confirmed with lawyers working with the Linux Foundation.

 - If there was any question as to the appropriate license identifier,
   the file was flagged for further research and to be revisited later
   in time.

In total, over 70 hours of logged manual review was done on the
spreadsheet to determine the SPDX license identifiers to apply to the
source files by Kate, Philippe, Thomas and, in some cases, confirmation
by lawyers working with the Linux Foundation.

Kate also obtained a third independent scan of the 4.13 code base from
FOSSology, and compared selected files where the other two scanners
disagreed against that SPDX file, to see if there was new insights.  The
Windriver scanner is based on an older version of FOSSology in part, so
they are related.

Thomas did random spot checks in about 500 files from the spreadsheets
for the uapi headers and agreed with SPDX license identifier in the
files he inspected. For the non-uapi files Thomas did random spot checks
in about 15000 files.

In initial set of patches against 4.14-rc6, 3 files were found to have
copy/paste license identifier errors, and have been fixed to reflect the
correct identifier.

Additionally Philippe spent 10 hours this week doing a detailed manual
inspection and review of the 12,461 patched files from the initial patch
version early this week with:
 - a full scancode scan run, collecting the matched texts, detected
   license ids and scores
 - reviewing anything where there was a license detected (about 500+
   files) to ensure that the applied SPDX license was correct
 - reviewing anything where there was no detection but the patch license
   was not GPL-2.0 WITH Linux-syscall-note to ensure that the applied
   SPDX license was correct

This produced a worksheet with 20 files needing minor correction.  This
worksheet was then exported into 3 different .csv files for the
different types of files to be modified.

These .csv files were then reviewed by Greg.  Thomas wrote a script to
parse the csv files and add the proper SPDX tag to the file, in the
format that the file expected.  This script was further refined by Greg
based on the output to detect more types of files automatically and to
distinguish between header and source .c files (which need different
comment types.)  Finally Greg ran the script using the .csv files to
generate the patches.

Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org>
Reviewed-by: Philippe Ombredanne <pombredanne@nexb.com>
Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
 2017-11-02 11:10:55 +01:00
Kevin Hao
758ddd1d11 fbdev: radeon: replace PPC_OF with PPC 
The PPC_OF is a ppc specific option which is used to mean that the
firmware device tree access functions are available. Since all the
ppc platforms have a device tree, it is aways set to 'y' for ppc.
So it makes no sense to keep a such option in the current kernel.
Replace it with PPC.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
 2015-03-17 20:04:31 +11:00
Tomi Valkeinen
f7018c2135 video: move fbdev to drivers/video/fbdev 
The drivers/video directory is a mess. It contains generic video related
files, directories for backlight, console, linux logo, lots of fbdev
device drivers, fbdev framework files.

Make some order into the chaos by creating drivers/video/fbdev
directory, and move all fbdev related files there.

No functionality is changed, although I guess it is possible that some
subtle Makefile build order related issue could be created by this
patch.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
Acked-by: Laurent Pinchart <laurent.pinchart@ideasonboard.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Rob Clark <robdclark@gmail.com>
Acked-by: Jingoo Han <jg1.han@samsung.com>
Acked-by: Daniel Vetter <daniel.vetter@ffwll.ch>
 2014-04-17 08:10:19 +03:00