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| author | Tony Lindgren <tony.lindgren@linux.intel.com> | 2024-07-03 13:06:08 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-07-04 15:41:44 +0200 |
| commit | 7640f1a44eba0cc1a41b312080c236f5c668cd50 (patch) | |
| tree | 2f915252361948083a63887dcd0cb87ba3115bb4 /kernel/printk/console_cmdline.h | |
| parent | 33827dc4ad8982c987ad4066d643693403ce7fd0 (diff) | |
printk: Add match_devname_and_update_preferred_console()
Let's add match_devname_and_update_preferred_console() for driver
subsystems to call during init when the console is ready, and it's
character device name is known. For now, we use it only for the serial
layer to allow console=DEVNAME:0.0 style hardware based addressing for
consoles.
The earlier attempt on doing this caused a regression with the kernel
command line console order as it added calling __add_preferred_console()
again later on during init. A better approach was suggested by Petr where
we add the deferred console to the console_cmdline[] and update it later
on when the console is ready.
Suggested-by: Petr Mladek <pmladek@suse.com>
Co-developed-by: Petr Mladek <pmladek@suse.com>
Signed-off-by: Tony Lindgren <tony.lindgren@linux.intel.com>
Reviewed-by: Petr Mladek <pmladek@suse.com>
Link: https://lore.kernel.org/r/20240703100615.118762-2-tony.lindgren@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/printk/console_cmdline.h')
| -rw-r--r-- | kernel/printk/console_cmdline.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/kernel/printk/console_cmdline.h b/kernel/printk/console_cmdline.h index 3ca74ad391d6..0ab573b6d4dc 100644 --- a/kernel/printk/console_cmdline.h +++ b/kernel/printk/console_cmdline.h @@ -6,6 +6,7 @@ struct console_cmdline { char name[16]; /* Name of the driver */ int index; /* Minor dev. to use */ + char devname[32]; /* DEVNAME:0.0 style device name */ bool user_specified; /* Specified by command line vs. platform */ char *options; /* Options for the driver */ #ifdef CONFIG_A11Y_BRAILLE_CONSOLE |