From: Sven Schnelle <svens@linux.ibm.com>
Date: Fri, 14 Jul 2023 08:42:56 +0000 (+0200)
Subject: s390/hypfs: stop using ENOSYS error code
X-Git-Url: http://git.maquefel.me/?a=commitdiff_plain;h=5216d853cb154a4866c9984fd41f71583e8bdd39;p=linux.git

s390/hypfs: stop using ENOSYS error code

ENOSYS should only be returned to userspace when a syscall
is not implemented. The only known user, 'hyptop' is not explicitely
checking for -ENOSYS, therefore use EOPNOTSUPP instead. It is very
unlikely that there are other users, so this change should have no
impact on userspace.

Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Acked-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---

diff --git a/arch/s390/hypfs/hypfs_diag.c b/arch/s390/hypfs/hypfs_diag.c
index ea4c436f86a0d..279b7bba4d430 100644
--- a/arch/s390/hypfs/hypfs_diag.c
+++ b/arch/s390/hypfs/hypfs_diag.c
@@ -67,7 +67,7 @@ void *diag204_get_buffer(enum diag204_format fmt, int *pages)
 		*pages = diag204((unsigned long)DIAG204_SUBC_RSI |
 				 (unsigned long)DIAG204_INFO_EXT, 0, NULL);
 		if (*pages <= 0)
-			return ERR_PTR(-ENOSYS);
+			return ERR_PTR(-EOPNOTSUPP);
 	}
 	diag204_buf = __vmalloc_node(array_size(*pages, PAGE_SIZE),
 				     PAGE_SIZE, GFP_KERNEL, NUMA_NO_NODE,
@@ -127,7 +127,7 @@ static int diag204_probe(void)
 		diag204_set_info_type(DIAG204_INFO_SIMPLE);
 		goto out;
 	} else {
-		rc = -ENOSYS;
+		rc = -EOPNOTSUPP;
 		goto fail_store;
 	}
 out:
@@ -144,7 +144,7 @@ int diag204_store(void *buf, int pages)
 
 	rc = diag204((unsigned long)diag204_store_sc |
 		     (unsigned long)diag204_get_info_type(), pages, buf);
-	return rc < 0 ? -ENOSYS : 0;
+	return rc < 0 ? -EOPNOTSUPP : 0;
 }
 
 struct dbfs_d204_hdr {