crypto: hifn_795x - Use softirq kernel mapping in bh context

Use KM_SOFTIRQ instead of KM_IRQ in tasklet context.
Added bug_on on input no-page condition.

Signed-off-by: Evgeniy Polyakov <zbr@ioremap.net>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index ab4f94b..0c79fe7 100644 (file)
--- a/drivers/crypto/hifn_795x.c
+++ b/drivers/crypto/hifn_795x.c
@@ -1393,10 +1393,12 @@ static int hifn_setup_dma(struct hifn_device *dev,
        n = nbytes;
        while (n) {
                if (t->length && rctx->walk.flags & ASYNC_FLAGS_MISALIGNED) {
+                       BUG_ON(!sg_page(t));
                        dpage = sg_page(t);
                        doff = 0;
                        len = t->length;
                } else {
+                       BUG_ON(!sg_page(dst));
                        dpage = sg_page(dst);
                        doff = dst->offset;
                        len = dst->length;
@@ -1791,17 +1793,17 @@ static void hifn_process_ready(struct ablkcipher_request *req, int error)
                                continue;
                        }
 
-                       saddr = kmap_atomic(sg_page(t), KM_IRQ1);
+                       saddr = kmap_atomic(sg_page(t), KM_SOFTIRQ0);
 
                        err = ablkcipher_get(saddr, &t->length, t->offset,
                                        dst, nbytes, &nbytes);
                        if (err < 0) {
-                               kunmap_atomic(saddr, KM_IRQ1);
+                               kunmap_atomic(saddr, KM_SOFTIRQ0);
                                break;
                        }
 
                        idx += err;
-                       kunmap_atomic(saddr, KM_IRQ1);
+                       kunmap_atomic(saddr, KM_SOFTIRQ0);
                }
 
                ablkcipher_walk_exit(&rctx->walk);