[PATCH 17/37] crypto: fsl: blob: Flush dcache range for destination address

[Peng Fan (OSS)]

From: Breno Lima <breno.lima at nxp.com>

The blob command is not working on i.MX7D, i.MX8MQ and i.MX8MM
devices.

Due to different cache management it's necessary to flush dcache
range for destination address so data can be available in memory.

Add necessary operations in blob_encap() and blob_decap() functions.

Signed-off-by: Breno Lima <breno.lima at nxp.com>
Reviewed-by: Ye Li <ye.li at nxp.com>
Signed-off-by: Peng Fan <peng.fan at nxp.com>
---
 drivers/crypto/fsl/fsl_blob.c | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/drivers/crypto/fsl/fsl_blob.c b/drivers/crypto/fsl/fsl_blob.c
index d6bd861251..e8202cc569 100644
--- a/drivers/crypto/fsl/fsl_blob.c
+++ b/drivers/crypto/fsl/fsl_blob.c
@@ -65,6 +65,9 @@ int blob_decap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
 	flush_dcache_range((unsigned long)desc,
 			   (unsigned long)desc + size);
 
+	flush_dcache_range((unsigned long)dst,
+			   (unsigned long)dst + size);
+
 	ret = run_descriptor_jr(desc);
 
 	if (ret) {
@@ -130,6 +133,9 @@ int blob_encap(u8 *key_mod, u8 *src, u8 *dst, u32 len)
 	flush_dcache_range((unsigned long)desc,
 			   (unsigned long)desc + size);
 
+	flush_dcache_range((unsigned long)dst,
+			   (unsigned long)dst + size);
+
 	ret = run_descriptor_jr(desc);
 
 	if (ret) {
-- 
2.25.1