linux-kernel - [PATCH v1 1/1] ACPI: NFIT: Import GUID before use

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Date:   Thu, 15 Apr 2021 16:59:01 +0300
From:   Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
To:     Dan Williams <dan.j.williams@...el.com>, linux-nvdimm@...ts.01.org,
        linux-acpi@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Vishal Verma <vishal.l.verma@...el.com>,
        Dave Jiang <dave.jiang@...el.com>,
        Ira Weiny <ira.weiny@...el.com>,
        "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Len Brown <lenb@...nel.org>,
        Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
Subject: [PATCH v1 1/1] ACPI: NFIT: Import GUID before use

Strictly speaking the comparison between guid_t and raw buffer
is not correct. Import GUID to variable of guid_t type and then
compare.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@...ux.intel.com>
---
 drivers/acpi/nfit/core.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/acpi/nfit/core.c b/drivers/acpi/nfit/core.c
index 958aaac869e8..6d8a1a93636a 100644
--- a/drivers/acpi/nfit/core.c
+++ b/drivers/acpi/nfit/core.c
@@ -678,10 +678,12 @@ static const char *spa_type_name(u16 type)
 
 int nfit_spa_type(struct acpi_nfit_system_address *spa)
 {
+	guid_t guid;
 	int i;
 
+	import_guid(&guid, spa->range_guid);
 	for (i = 0; i < NFIT_UUID_MAX; i++)
-		if (guid_equal(to_nfit_uuid(i), (guid_t *)&spa->range_guid))
+		if (guid_equal(to_nfit_uuid(i), &guid))
 			return i;
 	return -1;
 }
-- 
2.30.2