linux.git/drivers/staging/olpc_dcon, branch v5.17

kernel.h: split out panic and oops helpers

2021-07-01T18:06:04+00:00

kernel.h is being used as a dump for all kinds of stuff for a long time.
Here is the attempt to start cleaning it up by splitting out panic and
oops helpers.

There are several purposes of doing this:
- dropping dependency in bug.h
- dropping a loop by moving out panic_notifier.h
- unload kernel.h from something which has its own domain

At the same time convert users tree-wide to use new headers, although for
the time being include new header back to kernel.h to avoid twisted
indirected includes for existing users.

[akpm@linux-foundation.org: thread_info.h needs limits.h]
[andriy.shevchenko@linux.intel.com: ia64 fix]
  Link: https://lkml.kernel.org/r/20210520130557.55277-1-andriy.shevchenko@linux.intel.com

Link: https://lkml.kernel.org/r/20210511074137.33666-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Andy Shevchenko 
Reviewed-by: Bjorn Andersson 
Co-developed-by: Andrew Morton 
Acked-by: Mike Rapoport 
Acked-by: Corey Minyard 
Acked-by: Christian Brauner 
Acked-by: Arnd Bergmann 
Acked-by: Kees Cook 
Acked-by: Wei Liu 
Acked-by: Rasmus Villemoes 
Signed-off-by: Andrew Morton 
Acked-by: Sebastian Reichel 
Acked-by: Luis Chamberlain 
Acked-by: Stephen Boyd 
Acked-by: Thomas Bogendoerfer 
Acked-by: Helge Deller  # parisc
Signed-off-by: Linus Torvalds

staging: olpc_dcon: Switch from strlcpy to strscpy

2021-02-04T16:16:06+00:00

strlcpy is marked as deprecated in Documentation/process/deprecated.rst,
and there is no functional difference when the caller expects truncation
(when not checking the return value). strscpy is relatively better as it
also avoids scanning the whole source string.

This silences the related checkpatch warnings from:
5dbdb2d87c29 ("checkpatch: prefer strscpy to strlcpy")

Signed-off-by: Kumar Kartikeya Dwivedi 
Link: https://lore.kernel.org/r/20210131172838.146706-8-memxor@gmail.com
Signed-off-by: Greg Kroah-Hartman

staging: olpc_dcon: Do not call platform_device_unregister() in dcon_probe()

2020-12-09T18:45:13+00:00

In dcon_probe(), when platform_device_add() failes to add the device,
it jumps to call platform_device_unregister() to remove the device,
which is unnecessary. So use platform_device_put() instead.

Fixes: 53c43c5ca133 ("Revert "Staging: olpc_dcon: Remove obsolete driver"")
Signed-off-by: Jing Xiangfeng 
Link: https://lore.kernel.org/r/20201120074932.31871-1-jingxiangfeng@huawei.com
Signed-off-by: Greg Kroah-Hartman

staging: olpc_dcon: fix wrong dependencies in Kconfig file

2019-09-30T19:58:00+00:00

To allow simultaneous support for XO-1 and XO-1.5.
This module require GPIO_CS5535 (for 1.0) and ACPI (for 1.5) now.

Reported-by: kbuild test robot 
Signed-off-by: Jerry Lin 
Link: https://lore.kernel.org/r/20190925074243.GA24947@compute1
Signed-off-by: Greg Kroah-Hartman

staging: olpc_dcon: allow simultaneous XO-1 and XO-1.5 support

2019-09-30T19:57:58+00:00

This patch remove model related configuration.
Since the module can decide which platform data to use itself base on
current running olpc board.

Also change module dependency from (GPIO_CS5535 || GPIO_CS5535=n)
to (GPIO_CS5535 || ACPI) because original one does not make any sense
and module only doing real work when GPIO_CS5535 or ACPI is setted.

Remove kernel configurations:
- FB_OLPC_DCON_1
- FB_OLPC_DCON_1_5

Signed-off-by: Jerry Lin 
Link: https://lore.kernel.org/r/20190906010613.GA562@compute1
Signed-off-by: Greg Kroah-Hartman

staging: olpc_dcon: Remove TODO item

2019-07-30T07:52:04+00:00

All uses of old GPIO API have been converted to new API.
This item can be removed from TODO file.

Signed-off-by: Jerry Lin 
Link: https://lore.kernel.org/r/20190729023544.GA25930@compute1
Signed-off-by: Greg Kroah-Hartman

staging/olpc_dcon: Add drm conversion to TODO

2019-06-13T08:07:15+00:00

this driver is pretty horrible from a design pov, and needs a complete
overhaul. Concrete thing that annoys me is that it looks at
registered_fb, which is an internal thing to fbmem.c and fbcon.c. And
ofc it gets the lifetime rules all wrong (it should at least use
get/put_fb_info).

Looking at the history, there's been an attempt at dropping this from
staging in 2016, but that had to be reverted. Since then not real
effort except the usual stream of trivial patches, and fbdev has been
formally closed for any new hw support. Time to try again and drop
this?

Signed-off-by: Daniel Vetter 
Reviewed-by: Sam Ravnborg 
Acked-by: Greg Kroah-Hartman 
Reviewed-by: Maarten Lankhorst 
Cc: Greg Kroah-Hartman 
Cc: Jens Frederich 
Cc: Daniel Drake 
Cc: Jon Nettleton 
Link: https://patchwork.freedesktop.org/patch/msgid/20190528090304.9388-33-daniel.vetter@ffwll.ch

staging/olpc: lock_fb_info can't fail

2019-06-12T18:28:27+00:00

Simply because olpc never unregisters the damn thing. It also
registers the framebuffer directly by poking around in fbdev
core internals, so it's all around rather broken.

Signed-off-by: Daniel Vetter 
Reviewed-by: Sam Ravnborg 
Acked-by: Greg Kroah-Hartman 
Reviewed-by: Maarten Lankhorst 
Cc: Greg Kroah-Hartman 
Cc: Jens Frederich 
Cc: Daniel Drake 
Cc: Jon Nettleton 
Link: https://patchwork.freedesktop.org/patch/msgid/20190528090304.9388-15-daniel.vetter@ffwll.ch

Merge tag 'backlight-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight

2019-05-14T17:45:03+00:00

Pull backlight updates from Lee Jones:
 "Fix-ups:
   - Remove unused BACKLIGHT_LCD_SUPPORT symbol
   - Remove unused BACKLIGHT_CLASS_DEVICE dependencies
   - Add DT support to lm3630a_bl

  Bug Fixes:
   - Fix error path issues in lm3630a_bl"

* tag 'backlight-next-5.2' of git://git.kernel.org/pub/scm/linux/kernel/git/lee/backlight:
  backlight: lm3630a: Add firmware node support
  dt-bindings: backlight: Add lm3630a bindings
  backlight: lm3630a: Return 0 on success in update_status functions
  video: lcd: Remove useless BACKLIGHT_CLASS_DEVICE dependencies
  video: backlight: Remove useless BACKLIGHT_LCD_SUPPORT kernel symbol

staging: olpc_dcon: Convert all uses of old GPIO API to new descriptor API

2019-04-25T10:04:48+00:00

This commit eliminate all uses of legacy integer base GPIO API in
olpc_dcon_xo_1_5.c and replace them with new descriptor GPIO API like
those in olpc_dcon_xo_1.c.

Also pull some common code with olpc_dcon_xo_1.c to olpc_dcon.h for code
sharing.

Signed-off-by: Jerry Lin 
Signed-off-by: Greg Kroah-Hartman