diff options
| author | Thomas Gleixner | 2015-10-13 19:00:14 +0200 |
|---|---|---|
| committer | Thomas Gleixner | 2015-10-13 19:00:14 +0200 |
| commit | e50226b4b86755e65aef2129e94d952fee3df722 (patch) | |
| tree | d4dd925fc7f5c6fe46b647c8027911190595f014 /drivers/dma/dmaengine.c | |
| parent | genirq: Add flag to force mask in disable_irq[_nosync]() (diff) | |
| parent | Linux 4.3-rc5 (diff) | |
| download | kernel-qcow2-linux-e50226b4b86755e65aef2129e94d952fee3df722.tar.gz kernel-qcow2-linux-e50226b4b86755e65aef2129e94d952fee3df722.tar.xz kernel-qcow2-linux-e50226b4b86755e65aef2129e94d952fee3df722.zip | |
Merge branch 'linus' into irq/core
Bring in upstream updates for patches which depend on them
Diffstat (limited to 'drivers/dma/dmaengine.c')
| -rw-r--r-- | drivers/dma/dmaengine.c | 10 |
1 files changed, 9 insertions, 1 deletions
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c index 3ff284c8e3d5..09479d4be4db 100644 --- a/drivers/dma/dmaengine.c +++ b/drivers/dma/dmaengine.c @@ -554,10 +554,18 @@ struct dma_chan *dma_get_slave_channel(struct dma_chan *chan) mutex_lock(&dma_list_mutex); if (chan->client_count == 0) { + struct dma_device *device = chan->device; + + dma_cap_set(DMA_PRIVATE, device->cap_mask); + device->privatecnt++; err = dma_chan_get(chan); - if (err) + if (err) { pr_debug("%s: failed to get %s: (%d)\n", __func__, dma_chan_name(chan), err); + chan = NULL; + if (--device->privatecnt == 0) + dma_cap_clear(DMA_PRIVATE, device->cap_mask); + } } else chan = NULL; |