John Ogness 8255da6dd4 kdb: Do not assume write() callback available ... commit 6d3e0d8cc6 upstream. It is allowed for consoles to not provide a write() callback. For example ttynull does this. Check if a write() callback is available before using it. Signed-off-by: John Ogness <john.ogness@linutronix.de> Reviewed-by: Petr Mladek <pmladek@suse.com> Reviewed-by: Douglas Anderson <dianders@chromium.org> Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org> Acked-by: Daniel Thompson <daniel.thompson@linaro.org> Reviewed-by: Sergey Senozhatsky <senozhatsky@chromium.org> Signed-off-by: Petr Mladek <pmladek@suse.com> Link: https://lore.kernel.org/r/20230717194607.145135-2-john.ogness@linutronix.de Cc: Brian Norris <briannorris@chromium.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2025-02-21 13:50:09 +01:00
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.gitignore
kdb_bp.c
kdb_bt.c
kdb_cmds
kdb_debugger.c
kdb_io.c	kdb: Do not assume write() callback available	2025-02-21 13:50:09 +01:00
kdb_keyboard.c
kdb_main.c	kdb: Fix a potential buffer overflow in kdb_local()	2024-01-25 15:27:51 -08:00
kdb_private.h
kdb_support.c
Makefile