linux-kernel - [PATCH AUTOSEL 4.19 11/11] ACPI: NFIT: Fix comparison to '-ENXIO'

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Date:   Mon,  2 Nov 2020 20:20:39 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     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>, linux-nvdimm@...ts.01.org,
        linux-acpi@...r.kernel.org
Subject: [PATCH AUTOSEL 4.19 11/11] 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 dd4c7289610ec..cb88f3b43a940 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1535,7 +1535,7 @@ 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