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Thu, 04 Dec 2025 08:17:46 -0800 (PST) Sender: Guenter Roeck From: Guenter Roeck To: Shuah Khan Cc: Christian Brauner , Elizabeth Figura , Thomas Gleixner , Eric Dumazet , Jakub Kicinski , Kees Cook , linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, wine-devel@winehq.org, netdev@vger.kernel.org, bpf@vger.kernel.org, Guenter Roeck , Joe Damato Subject: [PATCH 10/13] selftests: net: Work around build error seen with -Werror Date: Thu, 4 Dec 2025 08:17:24 -0800 Message-ID: <20251204161729.2448052-11-linux@roeck-us.net> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20251204161729.2448052-1-linux@roeck-us.net> References: <20251204161729.2448052-1-linux@roeck-us.net> Precedence: bulk X-Mailing-List: bpf@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Signed-off-by: Guenter Roeck --- 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