Re: [PATCHv3 03/11] crypto: omap-sham: implement context export/import APIs

Context export/import are now required for ahash algorithms due to
required support in algif_hash. Implement these for OMAP SHA driver,
saving and restoring the internal state of the driver.

Signed-off-by: Tero Kristo <redacted>
---
 drivers/crypto/omap-sham.c | 31 +++++++++++++++++++++++++++++--
 1 file changed, 29 insertions(+), 2 deletions(-)

diff --git a/drivers/crypto/omap-sham.c b/drivers/crypto/omap-sham.c
index 6e53944..aa71e61 100644
--- a/drivers/crypto/omap-sham.c
+++ b/drivers/crypto/omap-sham.c

@@ -1379,6 +1379,27 @@ exit_unlock:
 	return ret;
 }
 
+static int omap_sham_export(struct ahash_request *req, void *out)
+{
+	struct omap_sham_reqctx *rctx = ahash_request_ctx(req);
+
+	while (omap_sham_flush(req) == -EINPROGRESS)
+		msleep(10);