GCC 13.2.0 reported the warning of the print format specifier:

conf.c: In function ‘sysfs_get’:
conf.c:181:72: warning: format ‘%s’ expects argument of type ‘char *’, \
                        but argument 3 has type ‘int’ [-Wformat=]
  181 |                 ksft_exit_fail_msg("sysfs: unable to read value '%s': 
%s\n",
      |                                                                       ~^
      |                                                                        |
      |                                                                        
char *
      |                                                                       %d

The fix passes strerror(errno) as it was intended, like in the sibling error
exit message.

Fixes: aba51cd0949ae ("selftests: alsa - add PCM test")
Cc: Mark Brown <[email protected]>
Cc: Jaroslav Kysela <[email protected]>
Cc: Takashi Iwai <[email protected]>
Cc: Shuah Khan <[email protected]>
Cc: [email protected]
Cc: [email protected]
Cc: [email protected]
Signed-off-by: Mirsad Todorovac <[email protected]>
---
v1 -> v2:
 Changed the subject line as suggested to reflect the style of the subsystem.
 No change to the code.

 tools/testing/selftests/alsa/conf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/alsa/conf.c 
b/tools/testing/selftests/alsa/conf.c
index 00925eb8d9f4..89e3656a042d 100644
--- a/tools/testing/selftests/alsa/conf.c
+++ b/tools/testing/selftests/alsa/conf.c
@@ -179,7 +179,7 @@ static char *sysfs_get(const char *sysfs_root, const char 
*id)
        close(fd);
        if (len < 0)
                ksft_exit_fail_msg("sysfs: unable to read value '%s': %s\n",
-                                  path, errno);
+                                  path, strerror(errno));
        while (len > 0 && path[len-1] == '\n')
                len--;
        path[len] = '\0';
-- 
2.40.1


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