linux-kernel - [PATCH 4.14 34/48] ACPI: NFIT: Fix comparison to -ENXIO

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Message-Id: <20201109125018.444264155@linuxfoundation.org>
Date:   Mon,  9 Nov 2020 13:55:43 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org, Zhang Qilong <zhangqilong3@...wei.com>,
        Pankaj Gupta <pankaj.gupta.linux@...il.com>,
        Vishal Verma <vishal.l.verma@...el.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH 4.14 34/48] ACPI: NFIT: Fix comparison to -ENXIO

From: Zhang Qilong <zhangqilong3@...wei.com>

[ Upstream commit 85f971b65a692b68181438e099b946cc06ed499b ]

Initial value of rc is '-ENXIO', and we should
use the initial value to check it.

Signed-off-by: Zhang Qilong <zhangqilong3@...wei.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@...il.com>
Reviewed-by: Vishal Verma <vishal.l.verma@...el.com>
[ rjw: Subject edit ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@...el.com>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 drivers/acpi/nfit/core.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 68205002f561e..20fd197ef74cc 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1273,7 +1273,7 @@ static ssize_t format1_show(struct device *dev,
 					le16_to_cpu(nfit_dcr->dcr->code));
 			break;
 		}
-		if (rc != ENXIO)
+		if (rc != -ENXIO)
 			break;
 	}
 	mutex_unlock(&acpi_desc->init_mutex);
-- 
2.27.0