Merge branch 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild

* 'kconfig' of git://git.kernel.org/pub/scm/linux/kernel/git/mmarek/kbuild:
  menuconfig: fix a regression when canceling the prompt dialog at exit
  kbuild: Fix compiler warning with assertion when calling 'fwrite'
  Improve update-po-config output
  menuconfig: let make not report error when not save configuration
  merge_config.sh: fix bug in final check
  merge_config.sh: whitespace cleanup
  merge_config.sh: use signal names compatible with dash and bash
  kconfig: add merge_config.sh script
  kconfig: use xfwrite wrapper function to silence warnings
  kconfig: fix set but not used warnings
  kconfig: fix warnings by specifing format arguments

7 files changed, 133 insertions, 14 deletions

diff --git a/scripts/kconfig/Makefile b/scripts/kconfig/Makefile
index 914833d99b0..79662658fb9 100644
--- a/scripts/kconfig/Makefile
+++ b/scripts/kconfig/Makefile
@@ -50,9 +50,8 @@ localyesconfig localmodconfig: $(obj)/streamline_config.pl $(obj)/conf
 
 # Create new linux.pot file
 # Adjust charset to UTF-8 in .po file to accept UTF-8 in Kconfig files
-# The symlink is used to repair a deficiency in arch/um
 update-po-config: $(obj)/kxgettext $(obj)/gconf.glade.h
-	$(Q)echo "  GEN config"
+	$(Q)echo "  GEN     config.pot"
 	$(Q)xgettext --default-domain=linux                         \
 	    --add-comments --keyword=_ --keyword=N_                 \
 	    --from-code=UTF-8                                       \
@@ -63,10 +62,11 @@ update-po-config: $(obj)/kxgettext $(obj)/gconf.glade.h
 	$(Q)(for i in `ls $(srctree)/arch/*/Kconfig      \
 	    $(srctree)/arch/*/um/Kconfig`;               \
 	    do                                           \
-		echo "  GEN $$i";                        \
+		echo "  GEN     $$i";                    \
 		$(obj)/kxgettext $$i                     \
 		     >> $(obj)/config.pot;               \
 	    done )
+	$(Q)echo "  GEN     linux.pot"
 	$(Q)msguniq --sort-by-file --to-code=UTF-8 $(obj)/config.pot \
 	    --output $(obj)/linux.pot
 	$(Q)rm -f $(obj)/config.pot
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 5a58965d880..7c7a5a6cc3f 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -464,7 +464,7 @@ kconfig_print_comment(FILE *fp, const char *value, void *arg)
 		fprintf(fp, "#");
 		if (l) {
 			fprintf(fp, " ");
-			fwrite(p, l, 1, fp);
+			xfwrite(p, l, 1, fp);
 			p += l;
 		}
 		fprintf(fp, "\n");
@@ -537,7 +537,7 @@ header_print_comment(FILE *fp, const char *value, void *arg)
 		fprintf(fp, " *");
 		if (l) {
 			fprintf(fp, " ");
-			fwrite(p, l, 1, fp);
+			xfwrite(p, l, 1, fp);
 			p += l;
 		}
 		fprintf(fp, "\n");
diff --git a/scripts/kconfig/expr.h b/scripts/kconfig/expr.h
index 80fce57080c..d4ecce8bc3a 100644
--- a/scripts/kconfig/expr.h
+++ b/scripts/kconfig/expr.h
@@ -10,6 +10,7 @@
 extern "C" {
 #endif
 
+#include <assert.h>
 #include <stdio.h>
 #ifndef __cplusplus
 #include <stdbool.h>
diff --git a/scripts/kconfig/gconf.c b/scripts/kconfig/gconf.c
index 9f4438027df..adc230638c5 100644
--- a/scripts/kconfig/gconf.c
+++ b/scripts/kconfig/gconf.c
@@ -683,7 +683,7 @@ void on_introduction1_activate(GtkMenuItem * menuitem, gpointer user_data)
 	dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
 					GTK_DIALOG_DESTROY_WITH_PARENT,
 					GTK_MESSAGE_INFO,
-					GTK_BUTTONS_CLOSE, intro_text);
+					GTK_BUTTONS_CLOSE, "%s", intro_text);
 	g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
 				 G_CALLBACK(gtk_widget_destroy),
 				 GTK_OBJECT(dialog));
@@ -701,7 +701,7 @@ void on_about1_activate(GtkMenuItem * menuitem, gpointer user_data)
 	dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
 					GTK_DIALOG_DESTROY_WITH_PARENT,
 					GTK_MESSAGE_INFO,
-					GTK_BUTTONS_CLOSE, about_text);
+					GTK_BUTTONS_CLOSE, "%s", about_text);
 	g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
 				 G_CALLBACK(gtk_widget_destroy),
 				 GTK_OBJECT(dialog));
@@ -720,7 +720,7 @@ void on_license1_activate(GtkMenuItem * menuitem, gpointer user_data)
 	dialog = gtk_message_dialog_new(GTK_WINDOW(main_wnd),
 					GTK_DIALOG_DESTROY_WITH_PARENT,
 					GTK_MESSAGE_INFO,
-					GTK_BUTTONS_CLOSE, license_text);
+					GTK_BUTTONS_CLOSE, "%s", license_text);
 	g_signal_connect_swapped(GTK_OBJECT(dialog), "response",
 				 G_CALLBACK(gtk_widget_destroy),
 				 GTK_OBJECT(dialog));
@@ -830,7 +830,7 @@ static void renderer_edited(GtkCellRendererText * cell,
 static void change_sym_value(struct menu *menu, gint col)
 {
 	struct symbol *sym = menu->sym;
-	tristate oldval, newval;
+	tristate newval;
 
 	if (!sym)
 		return;
@@ -847,7 +847,6 @@ static void change_sym_value(struct menu *menu, gint col)
 	switch (sym_get_type(sym)) {
 	case S_BOOLEAN:
 	case S_TRISTATE:
-		oldval = sym_get_tristate_value(sym);
 		if (!sym_tristate_within_range(sym, newval))
 			newval = yes;
 		sym_set_tristate_value(sym, newval);
@@ -1278,7 +1277,6 @@ static void update_tree(struct menu *src, GtkTreeIter * dst)
 	gboolean valid;
 	GtkTreeIter *sibling;
 	struct symbol *sym;
-	struct property *prop;
 	struct menu *menu1, *menu2;
 
 	if (src == &rootmenu)
@@ -1287,7 +1285,6 @@ static void update_tree(struct menu *src, GtkTreeIter * dst)
 	valid = gtk_tree_model_iter_children(model2, child2, dst);
 	for (child1 = src->list; child1; child1 = child1->next) {
 
-		prop = child1->prompt;
 		sym = child1->sym;
 
 	      reparse:
diff --git a/scripts/kconfig/lkc.h b/scripts/kconfig/lkc.h
index b633bdb9f3d..c18f2bd9c09 100644
--- a/scripts/kconfig/lkc.h
+++ b/scripts/kconfig/lkc.h
@@ -90,8 +90,10 @@ struct conf_printer {
 /* confdata.c and expr.c */
 static inline void xfwrite(const void *str, size_t len, size_t count, FILE *out)
 {
-	if (fwrite(str, len, count, out) < count)
-		fprintf(stderr, "\nError in writing or end of file.\n");
+	assert(len != 0);
+
+	if (fwrite(str, len, count, out) != count)
+		fprintf(stderr, "Error in writing or end of file.\n");
 }
 
 /* menu.c */
diff --git a/scripts/kconfig/mconf.c b/scripts/kconfig/mconf.c
index 19e200d9112..2c6286c0bc1 100644
--- a/scripts/kconfig/mconf.c
+++ b/scripts/kconfig/mconf.c
@@ -830,6 +830,8 @@ static int handle_exit(void)
 		fprintf(stderr, _("\n\n"
 				  "Your configuration changes were NOT saved."
 				  "\n\n"));
+		if (res != KEY_ESC)
+			res = 0;
 	}
 
 	return res;
diff --git a/scripts/kconfig/merge_config.sh b/scripts/kconfig/merge_config.sh
new file mode 100644
index 00000000000..ceadf0e150c
--- /dev/null
+++ b/scripts/kconfig/merge_config.sh
@@ -0,0 +1,117 @@
+#!/bin/sh
+#  merge_config.sh - Takes a list of config fragment values, and merges
+#  them one by one. Provides warnings on overridden values, and specified
+#  values that did not make it to the resulting .config file (due to missed
+#  dependencies or config symbol removal).
+#
+#  Portions reused from kconf_check and generate_cfg:
+#  http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/kconf_check
+#  http://git.yoctoproject.org/cgit/cgit.cgi/yocto-kernel-tools/tree/tools/generate_cfg
+#
+#  Copyright (c) 2009-2010 Wind River Systems, Inc.
+#  Copyright 2011 Linaro
+#
+#  This program is free software; you can redistribute it and/or modify
+#  it under the terms of the GNU General Public License version 2 as
+#  published by the Free Software Foundation.
+#
+#  This program is distributed in the hope that it will be useful,
+#  but WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+#  See the GNU General Public License for more details.
+
+clean_up() {
+	rm -f $TMP_FILE
+	exit
+}
+trap clean_up HUP INT TERM
+
+usage() {
+	echo "Usage: $0 [OPTIONS] [CONFIG [...]]"
+	echo "  -h    display this help text"
+	echo "  -m    only merge the fragments, do not execute the make command"
+	echo "  -n    use allnoconfig instead of alldefconfig"
+}
+
+MAKE=true
+ALLTARGET=alldefconfig
+
+while true; do
+	case $1 in
+	"-n")
+		ALLTARGET=allnoconfig
+		shift
+		continue
+		;;
+	"-m")
+		MAKE=false
+		shift
+		continue
+		;;
+	"-h")
+		usage
+		exit
+		;;
+	*)
+		break
+		;;
+	esac
+done
+
+
+
+MERGE_LIST=$*
+SED_CONFIG_EXP="s/^\(# \)\{0,1\}\(CONFIG_[a-zA-Z0-9_]*\)[= ].*/\2/p"
+TMP_FILE=$(mktemp ./.tmp.config.XXXXXXXXXX)
+
+# Merge files, printing warnings on overrided values
+for MERGE_FILE in $MERGE_LIST ; do
+	echo "Merging $MERGE_FILE"
+	CFG_LIST=$(sed -n "$SED_CONFIG_EXP" $MERGE_FILE)
+
+	for CFG in $CFG_LIST ; do
+		grep -q -w $CFG $TMP_FILE
+		if [ $? -eq 0 ] ; then
+			PREV_VAL=$(grep -w $CFG $TMP_FILE)
+			NEW_VAL=$(grep -w $CFG $MERGE_FILE)
+			if [ "x$PREV_VAL" != "x$NEW_VAL" ] ; then
+			echo Value of $CFG is redefined by fragment $MERGE_FILE:
+			echo Previous  value: $PREV_VAL
+			echo New value:       $NEW_VAL
+			echo
+			fi
+			sed -i "/$CFG[ =]/d" $TMP_FILE
+		fi
+	done
+	cat $MERGE_FILE >> $TMP_FILE
+done
+
+if [ "$MAKE" = "false" ]; then
+	cp $TMP_FILE .config
+	echo "#"
+	echo "# merged configuration written to .config (needs make)"
+	echo "#"
+	clean_up
+	exit
+fi
+
+# Use the merged file as the starting point for:
+# alldefconfig: Fills in any missing symbols with Kconfig default
+# allnoconfig: Fills in any missing symbols with # CONFIG_* is not set
+make KCONFIG_ALLCONFIG=$TMP_FILE $ALLTARGET
+
+
+# Check all specified config values took (might have missed-dependency issues)
+for CFG in $(sed -n "$SED_CONFIG_EXP" $TMP_FILE); do
+
+	REQUESTED_VAL=$(grep -w -e "$CFG" $TMP_FILE)
+	ACTUAL_VAL=$(grep -w -e "$CFG" .config)
+	if [ "x$REQUESTED_VAL" != "x$ACTUAL_VAL" ] ; then
+		echo "Value requested for $CFG not in final .config"
+		echo "Requested value:  $REQUESTED_VAL"
+		echo "Actual value:     $ACTUAL_VAL"
+		echo ""
+	fi
+done
+
+clean_up