Merge branch 'next' of git://git.infradead.org/users/vkoul/slave-dma

Pull slave dmaengine fixes from Vinod Koul:
 "Here are the fixes in dmaengine subsystem for rc2:

   - privatecnt fix for slave dma request API by Christopher

   - warn fix for PM ifdef in usb-dmac by Geert

   - fix hardware dependency for xgene by Jean"

* 'next' of git://git.infradead.org/users/vkoul/slave-dma:
  dmaengine: increment privatecnt when using dma_get_any_slave_channel
  dmaengine: xgene: Set hardware dependency
  dmaengine: usb-dmac: Protect PM-only functions to kill warning

3 files changed, 7 insertions, 0 deletions

diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
index fd7ac13f2574..bda2cb06dc7a 100644
--- a/drivers/dma/Kconfig
+++ b/drivers/dma/Kconfig
@@ -437,6 +437,7 @@ config IMG_MDC_DMA
 
 config XGENE_DMA
         tristate "APM X-Gene DMA support"
+        depends on ARCH_XGENE || COMPILE_TEST
         select DMA_ENGINE
         select DMA_ENGINE_RAID
         select ASYNC_TX_ENABLE_CHANNEL_SWITCH
diff --git a/drivers/dma/dmaengine.c b/drivers/dma/dmaengine.c
index 0e035a8cf401..2890d744bb1b 100644
--- a/drivers/dma/dmaengine.c
+++ b/drivers/dma/dmaengine.c
@@ -571,11 +571,15 @@ struct dma_chan *dma_get_any_slave_channel(struct dma_device *device)
 
         chan = private_candidate(&mask, device, NULL, NULL);
         if (chan) {
+                dma_cap_set(DMA_PRIVATE, device->cap_mask);
+                device->privatecnt++;
                 err = dma_chan_get(chan);
                 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);
                 }
         }
 
diff --git a/drivers/dma/sh/usb-dmac.c b/drivers/dma/sh/usb-dmac.c
index f705798ce3eb..ebd8a5f398b0 100644
--- a/drivers/dma/sh/usb-dmac.c
+++ b/drivers/dma/sh/usb-dmac.c
@@ -673,6 +673,7 @@ static struct dma_chan *usb_dmac_of_xlate(struct of_phandle_args *dma_spec,
  * Power management
  */
 
+#ifdef CONFIG_PM
 static int usb_dmac_runtime_suspend(struct device *dev)
 {
         struct usb_dmac *dmac = dev_get_drvdata(dev);
@@ -690,6 +691,7 @@ static int usb_dmac_runtime_resume(struct device *dev)
 
         return usb_dmac_init(dmac);
 }
+#endif /* CONFIG_PM */
 
 static const struct dev_pm_ops usb_dmac_pm = {
         SET_RUNTIME_PM_OPS(usb_dmac_runtime_suspend, usb_dmac_runtime_resume,