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[04/10] crypto: omap-des: add IV output handling

Message ID 20191017122549.4634-5-t-kristo@ti.com (mailing list archive)
State New, archived
Headers show
Series crypto: omap fixes towards 5.5 | expand

Commit Message

Tero Kristo Oct. 17, 2019, 12:25 p.m. UTC 
Currently omap-des driver does not copy end result IV out at all. This
is evident with the additional checks done at the crypto test manager.
Fix by copying out the IV values from HW.

Signed-off-by: Tero Kristo <t-kristo@ti.com>
---
 drivers/crypto/omap-des.c | 6 ++++++
 1 file changed, 6 insertions(+)
diff mbox series

Patch

diff --git a/drivers/crypto/omap-des.c b/drivers/crypto/omap-des.c
index 4c4dbc2b377e..ea82d55ea8c3 100644
--- a/drivers/crypto/omap-des.c
+++ b/drivers/crypto/omap-des.c
@@ -597,6 +597,7 @@  static int omap_des_crypt_req(struct crypto_engine *engine,
 static void omap_des_done_task(unsigned long data)
 {
 	struct omap_des_dev *dd = (struct omap_des_dev *)data;
+	int i;
 
 	pr_debug("enter done_task\n");
 
@@ -615,6 +616,11 @@  static void omap_des_done_task(unsigned long data)
 	omap_crypto_cleanup(&dd->out_sgl, dd->orig_out, 0, dd->total_save,
 			    FLAGS_OUT_DATA_ST_SHIFT, dd->flags);
 
+	if ((dd->flags & FLAGS_CBC) && dd->req->iv)
+		for (i = 0; i < 2; i++)
+			((u32 *)dd->req->iv)[i] =
+				omap_des_read(dd, DES_REG_IV(dd, i));
+
 	omap_des_finish_req(dd, 0);
 
 	pr_debug("exit\n");