crypto: atmel-sha - make atmel_sha_done_task more generic

This patch is a transitional patch. It updates atmel_sha_done_task() to
make it more generic. Indeed, it adds a new .resume() member in the
atmel_sha_dev structure. This hook is called from atmel_sha_done_task()
to resume processing an asynchronous request.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 16 insertions, 5 deletions

diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 2dbed8bb8d26..643d79a05dda 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -138,6 +138,7 @@ struct atmel_sha_dev {
         struct crypto_queue     queue;
         struct ahash_request    *req;
         bool                    is_async;
+        atmel_sha_fn_t          resume;
 
         struct atmel_sha_dma    dma_lch_in;
 
@@ -946,6 +947,8 @@ static int atmel_sha_handle_queue(struct atmel_sha_dev *dd,
         return (start_async) ? ret : err;
 }
 
+static int atmel_sha_done(struct atmel_sha_dev *dd);
+
 static int atmel_sha_start(struct atmel_sha_dev *dd)
 {
         struct ahash_request *req = dd->req;
@@ -960,6 +963,7 @@ static int atmel_sha_start(struct atmel_sha_dev *dd)
         if (err)
                 goto err1;
 
+        dd->resume = atmel_sha_done;
         if (ctx->op == SHA_OP_UPDATE) {
                 err = atmel_sha_update_req(dd);
                 if (err != -EINPROGRESS && (ctx->flags & SHA_FLAGS_FINUP))
@@ -1215,13 +1219,10 @@ static void atmel_sha_queue_task(unsigned long data)
         atmel_sha_handle_queue(dd, NULL);
 }
 
-static void atmel_sha_done_task(unsigned long data)
+static int atmel_sha_done(struct atmel_sha_dev *dd)
 {
-        struct atmel_sha_dev *dd = (struct atmel_sha_dev *)data;
         int err = 0;
 
-        dd->is_async = true;
-
         if (SHA_FLAGS_CPU & dd->flags) {
                 if (SHA_FLAGS_OUTPUT_READY & dd->flags) {
                         dd->flags &= ~SHA_FLAGS_OUTPUT_READY;
@@ -1245,11 +1246,21 @@ static void atmel_sha_done_task(unsigned long data)
                                 goto finish;
                 }
         }
-        return;
+        return err;
 
 finish:
         /* finish curent request */
         atmel_sha_finish_req(dd->req, err);
+
+        return err;
+}
+
+static void atmel_sha_done_task(unsigned long data)
+{
+        struct atmel_sha_dev *dd = (struct atmel_sha_dev *)data;
+
+        dd->is_async = true;
+        (void)dd->resume(dd);
 }
 
 static irqreturn_t atmel_sha_irq(int irq, void *dev_id)