linux-kernel - [RFC PATCH 3/5] fsi/scom: Fixup endian annotations

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Message-Id: <20180612051911.20690-4-benh@kernel.crashing.org>
Date:   Tue, 12 Jun 2018 15:19:09 +1000
From:   Benjamin Herrenschmidt <benh@...nel.crashing.org>
To:     openbmc@...ts.ozlabs.org
Cc:     linux-kernel@...r.kernel.org, Joel Stanley <joel@....id.au>,
        Andrew Jeffery <andrew@...id.au>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Benjamin Herrenschmidt <benh@...nel.crashing.org>
Subject: [RFC PATCH 3/5] fsi/scom: Fixup endian annotations

Use the proper annotated type __be32 and fixup the
accessor used for get_scom()

Signed-off-by: Benjamin Herrenschmidt <benh@...nel.crashing.org>
---
 drivers/fsi/fsi-scom.c | 9 ++++-----
 1 file changed, 4 insertions(+), 5 deletions(-)

diff --git a/drivers/fsi/fsi-scom.c b/drivers/fsi/fsi-scom.c
index 8a608db0aa07..6ddfb6021420 100644
--- a/drivers/fsi/fsi-scom.c
+++ b/drivers/fsi/fsi-scom.c
@@ -51,8 +51,8 @@ static DEFINE_IDA(scom_ida);
 static int put_scom(struct scom_device *scom_dev, uint64_t value,
 		    uint32_t addr)
 {
+	__be32 data;
 	int rc;
-	uint32_t data;
 
 	mutex_lock(&scom_dev->lock);
 
@@ -79,7 +79,7 @@ static int put_scom(struct scom_device *scom_dev, uint64_t value,
 static int get_scom(struct scom_device *scom_dev, uint64_t *value,
 		    uint32_t addr)
 {
-	uint32_t result, data;
+	__be32 result, data;
 	int rc;
 
 
@@ -96,14 +96,13 @@ static int get_scom(struct scom_device *scom_dev, uint64_t *value,
 	if (rc)
 		goto bail;
 
-	*value |= (uint64_t)cpu_to_be32(result) << 32;
+	*value |= (uint64_t)be32_to_cpu(result) << 32;
 	rc = fsi_device_read(scom_dev->fsi_dev, SCOM_DATA1_REG, &result,
 				sizeof(uint32_t));
 	if (rc)
 		goto bail;
 
-	*value |= cpu_to_be32(result);
-
+	*value |= be32_to_cpu(result);
  bail:
 	mutex_unlock(&scom_dev->lock);
 	return rc;
-- 
2.17.0