[PATCH v2 4/6] crypto: ccp - Constify 'dev_vdata' member

[Krzysztof Kozlowski]

sp_device->dev_vdata points to only const data (see 'static const struct
sp_dev_vdata dev_vdata'), so can be made pointer to const for code
safety.

Update also sp_get_acpi_version() function which returns this pointer to
'pointer to const' for code readability, even though it is not needed.

On the other hand, do not touch similar function sp_get_of_version()
because it will be immediately removed in next patches.

Acked-by: Tom Lendacky <thomas.lendacky at amd.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski at linaro.org>
---
 drivers/crypto/ccp/sp-dev.h      | 2 +-
 drivers/crypto/ccp/sp-platform.c | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/drivers/crypto/ccp/sp-dev.h b/drivers/crypto/ccp/sp-dev.h
index 6f9d7063257d..1335a83fe052 100644
--- a/drivers/crypto/ccp/sp-dev.h
+++ b/drivers/crypto/ccp/sp-dev.h
@@ -95,7 +95,7 @@ struct sp_device {
 
 	struct device *dev;
 
-	struct sp_dev_vdata *dev_vdata;
+	const struct sp_dev_vdata *dev_vdata;
 	unsigned int ord;
 	char name[SP_MAX_NAME_LEN];
 
diff --git a/drivers/crypto/ccp/sp-platform.c b/drivers/crypto/ccp/sp-platform.c
index 3933cac1694d..de8a8183efdb 100644
--- a/drivers/crypto/ccp/sp-platform.c
+++ b/drivers/crypto/ccp/sp-platform.c
@@ -63,13 +63,13 @@ static struct sp_dev_vdata *sp_get_of_version(struct platform_device *pdev)
 	return NULL;
 }
 
-static struct sp_dev_vdata *sp_get_acpi_version(struct platform_device *pdev)
+static const struct sp_dev_vdata *sp_get_acpi_version(struct platform_device *pdev)
 {
 	const struct acpi_device_id *match;
 
 	match = acpi_match_device(sp_acpi_match, &pdev->dev);
 	if (match && match->driver_data)
-		return (struct sp_dev_vdata *)match->driver_data;
+		return (const struct sp_dev_vdata *)match->driver_data;
 
 	return NULL;
 }

-- 
2.48.1