linux-stable.git/drivers/auxdisplay, branch linux-6.13.y

auxdisplay: hd44780: Fix an API misuse in hd44780.c

2025-04-20T08:17:57+00:00

commit 9b98a7d2e5f4e2beeff88f6571da0cdc5883c7fb upstream.

Variable allocated by charlcd_alloc() should be released
by charlcd_free(). The following patch changed kfree() to
charlcd_free() to fix an API misuse.

Fixes: 718e05ed92ec ("auxdisplay: Introduce hd44780_common.[ch]")
Cc: stable@vger.kernel.org
Signed-off-by: Haoxiang Li 
Reviewed-by: Geert Uytterhoeven 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Greg Kroah-Hartman

auxdisplay: panel: Fix an API misuse in panel.c

2025-04-10T12:41:34+00:00

[ Upstream commit 72e1c440c848624ad4cfac93d69d8a999a20355b ]

Variable allocated by charlcd_alloc() should be released
by charlcd_free(). The following patch changed kfree() to
charlcd_free() to fix an API misuse.

Reviewed-by: Geert Uytterhoeven 
Fixes: 718e05ed92ec ("auxdisplay: Introduce hd44780_common.[ch]")
Signed-off-by: Andy Shevchenko 
Signed-off-by: Sasha Levin

auxdisplay: MAX6959 should select BITREVERSE

2025-04-10T12:41:33+00:00

[ Upstream commit fce85f3da08b76c1b052f53a9f6f9c40a8a10660 ]

If CONFIG_BITREVERSE is not enabled:

    max6959.c:(.text+0x92): undefined reference to `byte_rev_table'

Fixes: a9bcd02fa42217c7 ("auxdisplay: Add driver for MAX695x 7-segment LED controllers")
Reported-by: kernel test robot 
Closes: https://lore.kernel.org/202502161703.3Vr4M7qg-lkp@intel.com/
Signed-off-by: Geert Uytterhoeven 
Signed-off-by: Andy Shevchenko 
Signed-off-by: Sasha Levin

Merge tag 'drm-misc-fixes-2024-12-19' of https://gitlab.freedesktop.org/drm/misc/kernel into drm-fixes

2024-12-19T21:13:45+00:00

drm-misc-fixes for v6.13-rc4:
- udma-buf fixes related to sealing.
- dma-buf build warning fix when debugfs is not enabled.
- Assorted drm/panel fixes.
- Correct error return in drm_dp_tunnel_mgr_create.
- Fix even more divide by zero in drm_mode_vrefresh.
- Fix FBDEV dependencies in Kconfig.
- Documentation fix for drm_sched_fini.
- IVPU NULL pointer, memory leak and WARN fix.

Signed-off-by: Dave Airlie 
From: Maarten Lankhorst 
Link: https://patchwork.freedesktop.org/patch/msgid/d0763051-87b7-483e-89e0-a9f993383450@linux.intel.com

fbdev: Fix recursive dependencies wrt BACKLIGHT_CLASS_DEVICE

2024-12-17T17:06:10+00:00

Do not select BACKLIGHT_CLASS_DEVICE from FB_BACKLIGHT. The latter
only controls backlight support within fbdev core code and data
structures.

Make fbdev drivers depend on BACKLIGHT_CLASS_DEVICE and let users
select it explicitly. Fixes warnings about recursive dependencies,
such as

error: recursive dependency detected!
	symbol BACKLIGHT_CLASS_DEVICE is selected by FB_BACKLIGHT
	symbol FB_BACKLIGHT is selected by FB_SH_MOBILE_LCDC
	symbol FB_SH_MOBILE_LCDC depends on FB_DEVICE
	symbol FB_DEVICE depends on FB_CORE
	symbol FB_CORE is selected by DRM_GEM_DMA_HELPER
	symbol DRM_GEM_DMA_HELPER is selected by DRM_PANEL_ILITEK_ILI9341
	symbol DRM_PANEL_ILITEK_ILI9341 depends on BACKLIGHT_CLASS_DEVICE

BACKLIGHT_CLASS_DEVICE is user-selectable, so making drivers adapt to
it is the correct approach in any case. For most drivers, backlight
support is also configurable separately.

v3:
- Select BACKLIGHT_CLASS_DEVICE in PowerMac defconfigs (Christophe)
- Fix PMAC_BACKLIGHT module dependency corner cases (Christophe)
v2:
- s/BACKLIGHT_DEVICE_CLASS/BACKLIGHT_CLASS_DEVICE (Helge)
- Fix fbdev driver-dependency corner case (Arnd)

Signed-off-by: Thomas Zimmermann 
Reviewed-by: Arnd Bergmann 
Link: https://patchwork.freedesktop.org/patch/msgid/20241216074450.8590-2-tzimmermann@suse.de

module: Convert symbol namespace to string literal

2024-12-02T19:34:44+00:00

Clean up the existing export namespace code along the same lines of
commit 33def8498fdd ("treewide: Convert macro and uses of __section(foo)
to __section("foo")") and for the same reason, it is not desired for the
namespace argument to be a macro expansion itself.

Scripted using

  git grep -l -e MODULE_IMPORT_NS -e EXPORT_SYMBOL_NS | while read file;
  do
    awk -i inplace '
      /^#define EXPORT_SYMBOL_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /^#define MODULE_IMPORT_NS/ {
        gsub(/__stringify\(ns\)/, "ns");
        print;
        next;
      }
      /MODULE_IMPORT_NS/ {
        $0 = gensub(/MODULE_IMPORT_NS\(([^)]*)\)/, "MODULE_IMPORT_NS(\"\\1\")", "g");
      }
      /EXPORT_SYMBOL_NS/ {
        if ($0 ~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+),/) {
  	if ($0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/ &&
  	    $0 !~ /(EXPORT_SYMBOL_NS[^(]*)\(\)/ &&
  	    $0 !~ /^my/) {
  	  getline line;
  	  gsub(/[[:space:]]*\\$/, "");
  	  gsub(/[[:space:]]/, "", line);
  	  $0 = $0 " " line;
  	}

  	$0 = gensub(/(EXPORT_SYMBOL_NS[^(]*)\(([^,]+), ([^)]+)\)/,
  		    "\\1(\\2, \"\\3\")", "g");
        }
      }
      { print }' $file;
  done

Requested-by: Masahiro Yamada 
Signed-off-by: Peter Zijlstra (Intel) 
Link: https://mail.google.com/mail/u/2/#inbox/FMfcgzQXKWgMmjdFwwdsfgxzKpVHWPlc
Acked-by: Greg KH 
Signed-off-by: Linus Torvalds

Get rid of 'remove_new' relic from platform driver struct

2024-12-01T23:12:43+00:00

The continual trickle of small conversion patches is grating on me, and
is really not helping.  Just get rid of the 'remove_new' member
function, which is just an alias for the plain 'remove', and had a
comment to that effect:

  /*
   * .remove_new() is a relic from a prototype conversion of .remove().
   * New drivers are supposed to implement .remove(). Once all drivers are
   * converted to not use .remove_new any more, it will be dropped.
   */

This was just a tree-wide 'sed' script that replaced '.remove_new' with
'.remove', with some care taken to turn a subsequent tab into two tabs
to make things line up.

I did do some minimal manual whitespace adjustment for places that used
spaces to line things up.

Then I just removed the old (sic) .remove_new member function, and this
is the end result.  No more unnecessary conversion noise.

Signed-off-by: Linus Torvalds

Merge tag 'auxdisplay-v6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay

2024-11-20T20:55:41+00:00

Pull auxdisplay update from Andy Shevchenko:

 - Move Holtek 16k33 driver to use agnostic i2c_get_match_data()

 - Miscellaneuous cleanups

* tag 'auxdisplay-v6.13-1' of git://git.kernel.org/pub/scm/linux/kernel/git/andy/linux-auxdisplay:
  auxdisplay: Remove unused functions
  auxdisplay: ht16k33: Make use of i2c_get_match_data()
  auxdisplay: Drop explicit initialization of struct i2c_device_id::driver_data to 0

auxdisplay: Remove unused functions

2024-10-08T17:48:18+00:00

cfag12864b_getrate() and cfag12864b_isenabled() were both added
in commit 70e840499aae ("[PATCH] drivers: add LCD support")
but never used.

Remove them.

Signed-off-by: Dr. David Alan Gilbert 
Reviewed-by: Geert Uytterhoeven 
Acked-by: Miguel Ojeda 
Signed-off-by: Andy Shevchenko

auxdisplay: ht16k33: Make use of i2c_get_match_data()

2024-10-03T10:07:09+00:00

Get matching data in one step by switching to use i2c_get_match_data().
As a positive side effect the I²C ID table is in sync of OF one.

Reviewed-by: Robin van der Gracht 
Signed-off-by: Andy Shevchenko