ide: refactor retry_unit set and clear into separate function

Code to set and clear state associated with retry in moved into
ide_set_retry and ide_clear_retry to make adding retry setups easier.
Signed-off-by: NEvgeny Yakovlev <eyakovlev@virtuozzo.com>
Signed-off-by: NDenis V. Lunev <den@openvz.org>
Reviewed-by: NPaolo Bonzini <pbonzini@redhat.com>
Message-id: 1468870792-7411-2-git-send-email-den@openvz.org
CC: Kevin Wolf <kwolf@redhat.com>
CC: Max Reitz <mreitz@redhat.com>
CC: Stefan Hajnoczi <stefanha@redhat.com>
CC: Fam Zheng <famz@redhat.com>
CC: John Snow <jsnow@redhat.com>
Signed-off-by: NJohn Snow <jsnow@redhat.com>

hw/ide/core.c

@@ -466,6 +466,20 @@ void ide_abort_command(IDEState *s)
     s->error = ABRT_ERR;
 }
 
+static void ide_set_retry(IDEState *s)
+{
+    s->bus->retry_unit = s->unit;
+    s->bus->retry_sector_num = ide_get_sector(s);
+    s->bus->retry_nsector = s->nsector;
+}
+
+static void ide_clear_retry(IDEState *s)
+{
+    s->bus->retry_unit = -1;
+    s->bus->retry_sector_num = 0;
+    s->bus->retry_nsector = 0;
+}
+
 /* prepare data transfer and tell what to do after */
 void ide_transfer_start(IDEState *s, uint8_t *buf, int size,
                         EndTransferFunc *end_transfer_func)
@@ -756,9 +770,7 @@ void dma_buf_commit(IDEState *s, uint32_t tx_bytes)
 void ide_set_inactive(IDEState *s, bool more)
 {
     s->bus->dma->aiocb = NULL;
-    s->bus->retry_unit = -1;
-    s->bus->retry_sector_num = 0;
-    s->bus->retry_nsector = 0;
+    ide_clear_retry(s);
     if (s->bus->dma->ops->set_inactive) {
         s->bus->dma->ops->set_inactive(s->bus->dma, more);
     }
@@ -914,9 +926,7 @@ static void ide_sector_start_dma(IDEState *s, enum ide_dma_cmd dma_cmd)
 void ide_start_dma(IDEState *s, BlockCompletionFunc *cb)
 {
     s->io_buffer_index = 0;
-    s->bus->retry_unit = s->unit;
-    s->bus->retry_sector_num = ide_get_sector(s);
-    s->bus->retry_nsector = s->nsector;
+    ide_set_retry(s);
     if (s->bus->dma->ops->start_dma) {
         s->bus->dma->ops->start_dma(s->bus->dma, s, cb);
     }