linux-kernel - [PATCH V4] staging: vme_user: Fix the issue of return the wrong error code

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Message-Id: <20231219170447.51237-1-piroyangg@gmail.com>
Date: Wed, 20 Dec 2023 01:04:47 +0800
From: Piro Yang <piroyangg@...il.com>
To: Greg KH <gregkh@...uxfoundation.org>,
	Julia Lawall <julia.lawall@...ia.fr>
Cc: Piro Yang <piroyangg@...il.com>,
	linux-staging@...ts.linux.dev,
	linux-kernel@...r.kernel.org
Subject: [PATCH V4] staging: vme_user: Fix the issue of return the wrong error code

Fix the issue of returning the -ENOSYS error code when an error occurs.

The error code of -ENOSYS indicates Invalid system call number, but
there is not system call error. So replace -ENOSYS error code by the
return -EINVAL error code.

Signed-off-by: Piro Yang <piroyangg@...il.com>
---
 v4: change the format of subject and changelog.

 v3: change the description and format for the patch.

 v2: split two different changes,
     only fix the issue of wrong error code.

 drivers/staging/vme_user/vme.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/staging/vme_user/vme.c b/drivers/staging/vme_user/vme.c
index 5c416c31ec57..9bc2d35405af 100644
--- a/drivers/staging/vme_user/vme.c
+++ b/drivers/staging/vme_user/vme.c
@@ -341,7 +341,7 @@ int vme_slave_set(struct vme_resource *resource, int enabled,
 
 	if (!bridge->slave_set) {
 		dev_err(bridge->parent, "Function not supported\n");
-		return -ENOSYS;
+		return -EINVAL;
 	}
 
 	if (!(((image->address_attr & aspace) == aspace) &&
-- 
2.25.1