From 6e3b18f9ef529769cf1f57642d0bf650e796b305 Mon Sep 17 00:00:00 2001 From: "Luis R. Rodriguez" Date: Mon, 20 Nov 2017 09:45:35 -0800 Subject: test_firmware: fix setting old custom fw path back on exit [ Upstream commit 65c79230576873b312c3599479c1e42355c9f349 ] The file /sys/module/firmware_class/parameters/path can be used to set a custom firmware path. The fw_filesystem.sh script creates a temporary directory to add a test firmware file to be used during testing, in order for this to work it uses the custom path syfs file and it was supposed to reset back the file on execution exit. The script failed to do this due to a typo, it was using OLD_PATH instead of OLD_FWPATH, since its inception since v3.17. Its not as easy to just keep the old setting, it turns out that resetting an empty setting won't actually do what we want, we need to check if it was empty and set an empty space. Without this we end up having the temporary path always set after we run these tests. Fixes: 0a8adf58475 ("test: add firmware_class loader test") Signed-off-by: Luis R. Rodriguez Signed-off-by: Greg Kroah-Hartman Signed-off-by: Sasha Levin Signed-off-by: Greg Kroah-Hartman --- tools/testing/selftests/firmware/fw_filesystem.sh | 5 ++++- 1 file changed, 4 insertions(+), 1 deletion(-) (limited to 'tools') diff --git a/tools/testing/selftests/firmware/fw_filesystem.sh b/tools/testing/selftests/firmware/fw_filesystem.sh index b1f20fef36c7..f9508e1a4058 100755 --- a/tools/testing/selftests/firmware/fw_filesystem.sh +++ b/tools/testing/selftests/firmware/fw_filesystem.sh @@ -45,7 +45,10 @@ test_finish() if [ "$HAS_FW_LOADER_USER_HELPER" = "yes" ]; then echo "$OLD_TIMEOUT" >/sys/class/firmware/timeout fi - echo -n "$OLD_PATH" >/sys/module/firmware_class/parameters/path + if [ "$OLD_FWPATH" = "" ]; then + OLD_FWPATH=" " + fi + echo -n "$OLD_FWPATH" >/sys/module/firmware_class/parameters/path rm -f "$FW" rmdir "$FWPATH" } -- cgit v1.2.3