Re: CONFIG_HOTPLUG_CPU: kconfig bug?

!MAILaRCHIVE_VOTE_RePLACE
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]
To: Sam Ravnborg <sam@...>
Cc: Hugh Dickins <hugh@...>, <linux-kernel@...>, <kbuild-devel@...>
Date: Wednesday, August 29, 2007 - 11:06 pm

Hi,

On Wed, 29 Aug 2007, Sam Ravnborg wrote:


It's somewhat a side effect of using select and defaults, the order of the 
config symbols becomes significant for oldconfig, if you look at the 
output you'll find:

Support for suspend on SMP and hot-pluggable CPUs (EXPERIMENTAL) (HOTPLUG_CPU) [Y/?] y

this sets it to 'y'. In this case one isn't asked about it, because there 
is only one choice. The patch below avoids the setting of the value here.

bye, Roman



Avoid setting the value if the symbol doesn't need to be changed or can't 
be changed. Later choices may change the dependencies and thus the 
possible input range.

Signed-off-by: Roman Zippel <zippel@linux-m68k.org>

---
 scripts/kconfig/conf.c |   21 ++++++++++++---------
 1 file changed, 12 insertions(+), 9 deletions(-)

Index: linux-2.6/scripts/kconfig/conf.c
===================================================================
--- linux-2.6.orig/scripts/kconfig/conf.c
+++ linux-2.6/scripts/kconfig/conf.c
@@ -72,7 +72,7 @@ static void check_stdin(void)
 	}
 }
 
-static void conf_askvalue(struct symbol *sym, const char *def)
+static int conf_askvalue(struct symbol *sym, const char *def)
 {
 	enum symbol_type type = sym_get_type(sym);
 	tristate val;
@@ -87,7 +87,7 @@ static void conf_askvalue(struct symbol 
 		printf("%s\n", def);
 		line[0] = '\n';
 		line[1] = 0;
-		return;
+		return 0;
 	}
 
 	switch (input_mode) {
@@ -97,23 +97,23 @@ static void conf_askvalue(struct symbol 
 	case set_random:
 		if (sym_has_value(sym)) {
 			printf("%s\n", def);
-			return;
+			return 0;
 		}
 		break;
 	case ask_new:
 	case ask_silent:
 		if (sym_has_value(sym)) {
 			printf("%s\n", def);
-			return;
+			return 0;
 		}
 		check_stdin();
 	case ask_all:
 		fflush(stdout);
 		fgets(line, 128, stdin);
-		return;
+		return 1;
 	case set_default:
 		printf("%s\n", def);
-		return;
+		return 1;
 	default:
 		break;
 	}
@@ -123,7 +123,7 @@ static void conf_askvalue(struct symbol 
 	case S_HEX:
 	case S_STRING:
 		printf("%s\n", def);
-		return;
+		return 1;
 	default:
 		;
 	}
@@ -174,6 +174,7 @@ static void conf_askvalue(struct symbol 
 		break;
 	}
 	printf("%s", line);
+	return 1;
 }
 
 int conf_string(struct menu *menu)
@@ -187,7 +188,8 @@ int conf_string(struct menu *menu)
 		def = sym_get_string_value(sym);
 		if (sym_get_string_value(sym))
 			printf("[%s] ", def);
-		conf_askvalue(sym, def);
+		if (!conf_askvalue(sym, def))
+			return 0;
 		switch (line[0]) {
 		case '\n':
 			break;
@@ -240,7 +242,8 @@ static int conf_sym(struct menu *menu)
 		if (menu_has_help(menu))
 			printf("/?");
 		printf("] ");
-		conf_askvalue(sym, sym_get_string_value(sym));
+		if (!conf_askvalue(sym, sym_get_string_value(sym)))
+			return 0;
 		strip(line);
 
 		switch (line[0]) {
-
Previous message: [thread] [date] [author]
Next message: [thread] [date] [author]

Messages in current thread:
CONFIG_HOTPLUG_CPU: kconfig bug?, Hugh Dickins, (Mon Aug 27, 10:54 am)
Re: CONFIG_HOTPLUG_CPU: kconfig bug?, Sam Ravnborg, (Mon Aug 27, 1:26 pm)
Re: CONFIG_HOTPLUG_CPU: kconfig bug?, Hugh Dickins, (Mon Aug 27, 4:49 pm)
Re: CONFIG_HOTPLUG_CPU: kconfig bug?, Sam Ravnborg, (Wed Aug 29, 2:01 pm)
Re: CONFIG_HOTPLUG_CPU: kconfig bug?, Roman Zippel, (Wed Aug 29, 11:06 pm)
Re: CONFIG_HOTPLUG_CPU: kconfig bug?, Hugh Dickins, (Thu Aug 30, 8:40 am)
Re: CONFIG_HOTPLUG_CPU: kconfig bug?, Rafael J. Wysocki, (Thu Aug 30, 2:48 pm)
Re: CONFIG_HOTPLUG_CPU: kconfig bug?, Hugh Dickins, (Thu Aug 30, 5:06 pm)