[PATCH] selftests: firmware: Fix ingonred return val of asprintf() warn

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Fix the following ingonred return val of asprintf() warn during
build:

cc -Wall -O2    fw_namespace.c  -o ../tools/testing/selftests/firmware/fw_namespace
fw_namespace.c: In function ‘main’:
fw_namespace.c:132:2: warning: ignoring return value of ‘asprintf’ declared with attribute ‘warn_unused_result’ [-Wunused-result]
  132 |  asprintf(&fw_path, "/lib/firmware/%s", fw_name);
      |  ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Shuah Khan <skhan@xxxxxxxxxxxxxxxxxxx>
---
 tools/testing/selftests/firmware/fw_namespace.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/testing/selftests/firmware/fw_namespace.c b/tools/testing/selftests/firmware/fw_namespace.c
index 0e393cb5f42d..4c6f0cd83c5b 100644
--- a/tools/testing/selftests/firmware/fw_namespace.c
+++ b/tools/testing/selftests/firmware/fw_namespace.c
@@ -129,7 +129,8 @@ int main(int argc, char **argv)
 		die("mounting tmpfs to /lib/firmware failed\n");
 
 	sys_path = argv[1];
-	asprintf(&fw_path, "/lib/firmware/%s", fw_name);
+	if (asprintf(&fw_path, "/lib/firmware/%s", fw_name) < 0)
+		die("error: failed to build full fw_path\n");
 
 	setup_fw(fw_path);
 
-- 
2.30.2




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