Merge branch 'topic/ctl-enhancements' into for-next

Pull ALSA control enhancement patches.
One is the faster lookup of control elements, and another is to
introduce the input data validation.

Signed-off-by: Takashi Iwai <tiwai@suse.de>

1 files changed, 19 insertions, 8 deletions

diff --git a/scripts/decode_stacktrace.sh b/scripts/decode_stacktrace.sh
index 5fbad61fe490..7075e26ab2c4 100755
--- a/scripts/decode_stacktrace.sh
+++ b/scripts/decode_stacktrace.sh
@@ -45,8 +45,13 @@ else
 	fi
 fi
 
-declare -A cache
-declare -A modcache
+declare aarray_support=true
+declare -A cache 2>/dev/null
+if [[ $? != 0 ]]; then
+	aarray_support=false
+else
+	declare -A modcache
+fi
 
 find_module() {
 	if [[ -n $debuginfod ]] ; then
@@ -97,7 +102,7 @@ parse_symbol() {
 
 	if [[ $module == "" ]] ; then
 		local objfile=$vmlinux
-	elif [[ "${modcache[$module]+isset}" == "isset" ]]; then
+	elif [[ $aarray_support == true && "${modcache[$module]+isset}" == "isset" ]]; then
 		local objfile=${modcache[$module]}
 	else
 		local objfile=$(find_module)
@@ -105,7 +110,9 @@ parse_symbol() {
 			echo "WARNING! Modules path isn't set, but is needed to parse this symbol" >&2
 			return
 		fi
-		modcache[$module]=$objfile
+		if [[ $aarray_support == true ]]; then
+			modcache[$module]=$objfile
+		fi
 	fi
 
 	# Remove the englobing parenthesis
@@ -125,7 +132,7 @@ parse_symbol() {
 	# Use 'nm vmlinux' to figure out the base address of said symbol.
 	# It's actually faster to call it every time than to load it
 	# all into bash.
-	if [[ "${cache[$module,$name]+isset}" == "isset" ]]; then
+	if [[ $aarray_support == true && "${cache[$module,$name]+isset}" == "isset" ]]; then
 		local base_addr=${cache[$module,$name]}
 	else
 		local base_addr=$(nm "$objfile" 2>/dev/null | awk '$3 == "'$name'" && ($2 == "t" || $2 == "T") {print $1; exit}')
@@ -133,7 +140,9 @@ parse_symbol() {
 			# address not found
 			return
 		fi
-		cache[$module,$name]="$base_addr"
+		if [[ $aarray_support == true ]]; then
+			cache[$module,$name]="$base_addr"
+		fi
 	fi
 	# Let's start doing the math to get the exact address into the
 	# symbol. First, strip out the symbol total length.
@@ -149,11 +158,13 @@ parse_symbol() {
 
 	# Pass it to addr2line to get filename and line number
 	# Could get more than one result
-	if [[ "${cache[$module,$address]+isset}" == "isset" ]]; then
+	if [[ $aarray_support == true && "${cache[$module,$address]+isset}" == "isset" ]]; then
 		local code=${cache[$module,$address]}
 	else
 		local code=$(${CROSS_COMPILE}addr2line -i -e "$objfile" "$address" 2>/dev/null)
-		cache[$module,$address]=$code
+		if [[ $aarray_support == true ]]; then
+			cache[$module,$address]=$code
+		fi
 	fi
 
 	# addr2line doesn't return a proper error code if it fails, so