The variable preferred_console is used only inside register_console()
and its semantics is boolean. It is negative when no console has been
made preferred.
The variable selected_console holds an index into the console_cmdline
array, pointing to the console that was made preferred.
Rename the variables:
selected_console -> preferred_console
preferred_console -> has_preferred
and make the new has_preferred local static bool.
This is a preparatory patch. To introduce selection with
ACPI SPCR table we should decide which value (old) preferred_console
should hold in the case when the console was set by ACPI.
Renaming was suggested by Peter Hurley
Signed-off-by: Aleksey Makarov <aleksey.makarov@xxxxxxxxxx>
Tested-by: Christopher Covington <cov@xxxxxxxxxxxxxx>
---
kernel/printk/printk.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c
index c963ba5..0cc9542 100644
--- a/kernel/printk/printk.c
+++ b/kernel/printk/printk.c
@@ -143,7 +143,6 @@ static struct console *exclusive_console;
static struct console_cmdline console_cmdline[MAX_CMDLINECONSOLES];
-static int selected_console = -1;
static int preferred_console = -1;
int console_set_on_cmdline;
EXPORT_SYMBOL(console_set_on_cmdline);
@@ -1997,14 +1996,14 @@ static int __add_preferred_console(char *name, int idx, char *options,
i++, c++) {
if (strcmp(c->name, name) == 0 && c->index == idx) {
if (!brl_options)
- selected_console = i;
+ preferred_console = i;
return 0;
}
}
if (i == MAX_CMDLINECONSOLES)
return -E2BIG;
if (!brl_options)
- selected_console = i;
+ preferred_console = i;
strlcpy(c->name, name, sizeof(c->name));
c->options = options;
braille_set_options(c, brl_options);
@@ -2490,6 +2489,7 @@ void register_console(struct console *newcon)
unsigned long flags;
struct console *bcon = NULL;
struct console_cmdline *c;
+ static bool has_preferred;
if (console_drivers)
for_each_console(bcon)
@@ -2516,15 +2516,15 @@ void register_console(struct console *newcon)
if (console_drivers && console_drivers->flags & CON_BOOT)
bcon = console_drivers;
- if (preferred_console < 0 || bcon || !console_drivers)
- preferred_console = selected_console;
+ if (!has_preferred || bcon || !console_drivers)
+ has_preferred = preferred_console >= 0;
/*
* See if we want to use this console driver. If we
* didn't select a console we take the first one
* that registers here.
*/
- if (preferred_console < 0) {
+ if (!has_preferred) {
if (newcon->index < 0)
newcon->index = 0;
if (newcon->setup == NULL ||
@@ -2532,7 +2532,7 @@ void register_console(struct console *newcon)
newcon->flags |= CON_ENABLED;
if (newcon->device) {
newcon->flags |= CON_CONSDEV;
- preferred_console = 0;
+ has_preferred = true;
}
}
}
@@ -2565,9 +2565,9 @@ void register_console(struct console *newcon)
}
newcon->flags |= CON_ENABLED;
- if (i == selected_console) {
+ if (i == preferred_console) {
newcon->flags |= CON_CONSDEV;
- preferred_console = selected_console;
+ has_preferred = true;
}
break;
}
--
2.7.0
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