Merge branch 'for_linus' of git://cavan.codon.org.uk/platform-drivers-x86

[firefly-linux-kernel-4.4.55.git] / drivers / dma / at_hdmac.c

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index 6e13f262139a89acabf4c512ce8461d62e810a61..88cfc61329d20fb137a46ff852569bf8b567c60a 100644 (file)
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -310,8 +310,6 @@ static void atc_complete_all(struct at_dma_chan *atchan)
 
        dev_vdbg(chan2dev(&atchan->chan_common), "complete all\n");
 
-       BUG_ON(atc_chan_is_enabled(atchan));
-
        /*
         * Submit queued descriptors ASAP, i.e. before we go through
         * the completed ones.
@@ -368,6 +366,9 @@ static void atc_advance_work(struct at_dma_chan *atchan)
 {
        dev_vdbg(chan2dev(&atchan->chan_common), "advance_work\n");
 
+       if (atc_chan_is_enabled(atchan))
+               return;
+
        if (list_empty(&atchan->active_list) ||
            list_is_singular(&atchan->active_list)) {
                atc_complete_all(atchan);
@@ -1078,9 +1079,7 @@ static void atc_issue_pending(struct dma_chan *chan)
                return;
 
        spin_lock_irqsave(&atchan->lock, flags);
-       if (!atc_chan_is_enabled(atchan)) {
-               atc_advance_work(atchan);
-       }
+       atc_advance_work(atchan);
        spin_unlock_irqrestore(&atchan->lock, flags);
 }