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>

1 files changed, 5 insertions, 3 deletions

diff --git a/drivers/crypto/hifn_795x.c b/drivers/crypto/hifn_795x.c
index ab4f94bec4ff..0c79fe7f1567 100644
--- 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);