[PATCH 10/13] selftests: net: Work around build error seen with -Werror
From: Guenter Roeck <linux@roeck-us.net>
Date: 2025-12-04 16:17:47
Also in:
bpf, linux-kselftest, lkml
Subsystem:
kernel selftest framework, networking [general], the rest · Maintainers:
Shuah Khan, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Linus Torvalds
Fix
ksft.h: In function ‘ksft_ready’:
ksft.h:27:9: error: ignoring return value of ‘write’ declared with attribute ‘warn_unused_result’
ksft.h: In function ‘ksft_wait’:
ksft.h:51:9: error: ignoring return value of ‘read’ declared with attribute ‘warn_unused_result’
by checking and then ignoring the return value of the affected functions.
Fixes: 2b6d490b82668 ("selftests: drv-net: Factor out ksft C helpers")
Cc: Joe Damato <redacted>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
tools/testing/selftests/net/lib/ksft.h | 6 ++++--
1 file changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/testing/selftests/net/lib/ksft.h b/tools/testing/selftests/net/lib/ksft.h
index 17dc34a612c6..b3d3f7e28e98 100644
--- a/tools/testing/selftests/net/lib/ksft.h
+++ b/tools/testing/selftests/net/lib/ksft.h@@ -24,7 +24,8 @@ static inline void ksft_ready(void) fd = STDOUT_FILENO; } - write(fd, msg, sizeof(msg)); + if (write(fd, msg, sizeof(msg))) + ; if (fd != STDOUT_FILENO) close(fd); }
@@ -48,7 +49,8 @@ static inline void ksft_wait(void) fd = STDIN_FILENO; } - read(fd, &byte, sizeof(byte)); + if (read(fd, &byte, sizeof(byte))) + ; if (fd != STDIN_FILENO) close(fd); }
--
2.43.0