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-rwxr-xr-xtools/testing/selftests/firmware/fw_filesystem.sh25
1 files changed, 20 insertions, 5 deletions
diff --git a/tools/testing/selftests/firmware/fw_filesystem.sh b/tools/testing/selftests/firmware/fw_filesystem.sh
index 5c495ad7958a..e35691239350 100755
--- a/tools/testing/selftests/firmware/fw_filesystem.sh
+++ b/tools/testing/selftests/firmware/fw_filesystem.sh
@@ -5,9 +5,24 @@
# know so we can be sure we're not accidentally testing the user helper.
set -e
-modprobe test_firmware
-
DIR=/sys/devices/virtual/misc/test_firmware
+TEST_DIR=$(dirname $0)
+
+test_modprobe()
+{
+ if [ ! -d $DIR ]; then
+ echo "$0: $DIR not present"
+ echo "You must have the following enabled in your kernel:"
+ cat $TEST_DIR/config
+ exit 1
+ fi
+}
+
+trap "test_modprobe" EXIT
+
+if [ ! -d $DIR ]; then
+ modprobe test_firmware
+fi
# CONFIG_FW_LOADER_USER_HELPER has a sysfs class under /sys/class/firmware/
# These days no one enables CONFIG_FW_LOADER_USER_HELPER so check for that
@@ -48,18 +63,18 @@ echo "ABCD0123" >"$FW"
NAME=$(basename "$FW")
-if printf '\000' >"$DIR"/trigger_request; then
+if printf '\000' >"$DIR"/trigger_request 2> /dev/null; then
echo "$0: empty filename should not succeed" >&2
exit 1
fi
-if printf '\000' >"$DIR"/trigger_async_request; then
+if printf '\000' >"$DIR"/trigger_async_request 2> /dev/null; then
echo "$0: empty filename should not succeed (async)" >&2
exit 1
fi
# Request a firmware that doesn't exist, it should fail.
-if echo -n "nope-$NAME" >"$DIR"/trigger_request; then
+if echo -n "nope-$NAME" >"$DIR"/trigger_request 2> /dev/null; then
echo "$0: firmware shouldn't have loaded" >&2
exit 1
fi