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From:   Alice Ferrazzi <alicef@alicef.me>
To:     jpoimboe@redhat.com, jeyu@kernel.org, jikos@kernel.org,
        mbenes@suse.cz, pmladek@suse.com, live-patching@vger.kernel.org,
        linux-kernel@vger.kernel.org
Cc:     Alice Ferrazzi <alice.ferrazzi@miraclelinux.com>
Subject: [PATCH v2] livepatch: core: Return EOPNOTSUPP instead of ENOSYS
Date:   Tue,  5 Feb 2019 03:33:28 +0900
Message-Id: <20190204183324.30775-1-alicef@alicef.me>
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From: Alice Ferrazzi <alice.ferrazzi@miraclelinux.com>

As a result of an unsupported operation is better to use EOPNOTSUPP
as error code.
ENOSYS is only used for 'invalid syscall nr' and nothing else.

Signed-off-by: Alice Ferrazzi <alice.ferrazzi@miraclelinux.com>
---
Changes v1->v2:
- Use EOPNOTSUPP instead of ENOTSUPP (Petr)

 kernel/livepatch/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/livepatch/core.c b/kernel/livepatch/core.c
index fe1993399823..075eb5c0813d 100644
--- a/kernel/livepatch/core.c
+++ b/kernel/livepatch/core.c
@@ -1004,7 +1004,7 @@ int klp_enable_patch(struct klp_patch *patch)
 
 	if (!klp_have_reliable_stack()) {
 		pr_err("This architecture doesn't have support for the livepatch consistency model.\n");
-		return -ENOSYS;
+		return -EOPNOTSUPP;
 	}
 
 
-- 
2.19.2