linux-kernel - [PATCH] selftests/nolibc: simplify call to ioperm

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Date:   Mon, 03 Jul 2023 10:11:08 +0200
From:   Thomas Weißschuh <linux@...ssschuh.net>
To:     Willy Tarreau <w@....eu>, Shuah Khan <shuah@...nel.org>
Cc:     linux-kselftest@...r.kernel.org, linux-kernel@...r.kernel.org,
        Zhangjin Wu <falcon@...ylab.org>,
        Thomas Weißschuh <linux@...ssschuh.net>
Subject: [PATCH] selftests/nolibc: simplify call to ioperm

Since commit 53fcfafa8c5c ("tools/nolibc/unistd: add syscall()") nolibc
has support for syscall(2).
Use it to get rid of some ifdef-ery.

Signed-off-by: Thomas Weißschuh <linux@...ssschuh.net>
---
 tools/testing/selftests/nolibc/nolibc-test.c | 6 +-----
 1 file changed, 1 insertion(+), 5 deletions(-)

diff --git a/tools/testing/selftests/nolibc/nolibc-test.c b/tools/testing/selftests/nolibc/nolibc-test.c
index 486334981e60..c02d89953679 100644
--- a/tools/testing/selftests/nolibc/nolibc-test.c
+++ b/tools/testing/selftests/nolibc/nolibc-test.c
@@ -1051,11 +1051,7 @@ int main(int argc, char **argv, char **envp)
 		 * exit with status code 2N+1 when N is written to 0x501. We
 		 * hard-code the syscall here as it's arch-dependent.
 		 */
-#if defined(_NOLIBC_SYS_H)
-		else if (my_syscall3(__NR_ioperm, 0x501, 1, 1) == 0)
-#else
-		else if (ioperm(0x501, 1, 1) == 0)
-#endif
+		else if (syscall(__NR_ioperm, 0x501, 1, 1) == 0)
 			__asm__ volatile ("outb %%al, %%dx" :: "d"(0x501), "a"(0));
 		/* if it does nothing, fall back to the regular panic */
 #endif

---
base-commit: a901a3568fd26ca9c4a82d8bc5ed5b3ed844d451
change-id: 20230703-nolibc-ioperm-88d87ae6d5e9

Best regards,
-- 
Thomas Weißschuh <linux@...ssschuh.net>