linux-kernel - [PATCH v2 7/7] EDAC/igen6: Keep returned errno consistent when edac mc has been enabled

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Message-Id: <20220817143458.335938-8-justin.he@arm.com>
Date:   Wed, 17 Aug 2022 14:34:58 +0000
From:   Jia He <justin.he@....com>
To:     Ard Biesheuvel <ardb@...nel.org>, Len Brown <lenb@...nel.org>,
        James Morse <james.morse@....com>,
        Tony Luck <tony.luck@...el.com>,
        Borislav Petkov <bp@...en8.de>,
        Mauro Carvalho Chehab <mchehab@...nel.org>,
        Robert Richter <rric@...nel.org>,
        Robert Moore <robert.moore@...el.com>,
        Qiuxu Zhuo <qiuxu.zhuo@...el.com>,
        Yazen Ghannam <yazen.ghannam@....com>
Cc:     linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-edac@...r.kernel.org, devel@...ica.org,
        "Rafael J . Wysocki" <rafael@...nel.org>,
        Shuai Xue <xueshuai@...ux.alibaba.com>,
        Jarkko Sakkinen <jarkko@...nel.org>, linux-efi@...r.kernel.org,
        toshi.kani@....com, nd@....com, Jia He <justin.he@....com>
Subject: [PATCH v2 7/7] EDAC/igen6: Keep returned errno consistent when edac mc has been enabled

Only a single edac driver can be enabled for EDAC MC. The igen6_init()
should be returned with EBUSY instead of ENODEV, which is consistent with
other edac drivers.

Signed-off-by: Jia He <justin.he@....com>
---
 drivers/edac/igen6_edac.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/edac/igen6_edac.c b/drivers/edac/igen6_edac.c
index a07bbfd075d0..41503b80347c 100644
--- a/drivers/edac/igen6_edac.c
+++ b/drivers/edac/igen6_edac.c
@@ -1273,7 +1273,7 @@ static int __init igen6_init(void)
 
 	owner = edac_get_owner();
 	if (owner && strncmp(owner, EDAC_MOD_STR, sizeof(EDAC_MOD_STR)))
-		return -ENODEV;
+		return -EBUSY;
 
 	edac_op_state = EDAC_OPSTATE_NMI;
 
-- 
2.25.1