tty: vt: sanitize consw::con_putc() parameters

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Make parameters of consw::con_putc() saner:
* x and y are unsigned now, as they cannot be negative, and
* ca is made u16, as it is composed of two 8bit values (character and
  attribute). See the con_putcs() hook, u16/ushort is worked on there.

And document the hook.

Signed-off-by: "Jiri Slaby (SUSE)" <jirislaby@kernel.org>
Cc: Helge Deller <deller@gmx.de>
Cc: linux-fbdev@vger.kernel.org
Cc: dri-devel@lists.freedesktop.org
Tested-by: Helge Deller <deller@gmx.de> # parisc STI console
Link: https://lore.kernel.org/r/20240122110401.7289-26-jirislaby@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

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Jiri Slaby (SUSE) 2024-01-22 12:03:39 +01:00 • committed by Greg Kroah-Hartman

parent 8bc03a3009

commit 338c28107b

3 changed files with 10 additions and 5 deletions

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6

drivers/video/console/dummycon.c

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4

drivers/video/console/newport_con.c

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5

include/linux/console.h

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