From: Zhang Qilong <zhangqilong3@huawei.com>
Date: Tue, 27 Oct 2020 13:49:01 +0000 (+0800)
Subject: ACPI: NFIT: Fix comparison to '-ENXIO'
X-Git-Tag: v5.9.7~34
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=b195d1d2dfc318443a5a7e3d4e16b0278d7e7ded;p=thirdparty%2Fkernel%2Fstable.git

ACPI: NFIT: Fix comparison to '-ENXIO'

[ 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@huawei.com>
Reviewed-by: Pankaj Gupta <pankaj.gupta.linux@gmail.com>
Reviewed-by: Vishal Verma <vishal.l.verma@intel.com>
[ rjw: Subject edit ]
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 26dd208a0d636..103ae7401f957 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -1564,7 +1564,7 @@ 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);