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

Pull slave-dmaengine updates from Vinod Koul:

 - new drivers for:
        - Ingenic JZ4780 controller
        - APM X-Gene controller
        - Freescale RaidEngine device
        - Renesas USB Controller

  - remove device_alloc_chan_resources dummy handlers

  - sh driver cleanups for peri peri and related emmc and asoc patches
    as well

  - fixes and enhancements spread over the drivers

* 'for-linus' of git://git.infradead.org/users/vkoul/slave-dma: (59 commits)
  dmaengine: dw: don't prompt for DW_DMAC_CORE
  dmaengine: shdmac: avoid unused variable warnings
  dmaengine: fix platform_no_drv_owner.cocci warnings
  dmaengine: pch_dma: fix memory leak on failure path in pch_dma_probe()
  dmaengine: at_xdmac: unlock spin lock before return
  dmaengine: xgene: devm_ioremap() returns NULL on error
  dmaengine: xgene: buffer overflow in xgene_dma_init_channels()
  dmaengine: usb-dmac: Fix dereferencing freed memory 'desc'
  dmaengine: sa11x0: report slave capabilities to upper layers
  dmaengine: vdma: Fix compilation warnings
  dmaengine: fsl_raid: statify fsl_re_chan_probe
  dmaengine: Driver support for FSL RaidEngine device.
  dmaengine: xgene_dma_init_ring_mngr() can be static
  Documentation: dma: Add documentation for the APM X-Gene SoC DMA device DTS binding
  arm64: dts: Add APM X-Gene SoC DMA device and DMA clock DTS nodes
  dmaengine: Add support for APM X-Gene SoC DMA engine driver
  dmaengine: usb-dmac: Add Renesas USB DMA Controller (USB-DMAC) driver
  dmaengine: renesas,usb-dmac: Add device tree bindings documentation
  dmaengine: edma: fixed wrongly initialized data parameter to the edma callback
  dmaengine: ste_dma40: fix implicit conversion
  ...

1 files changed, 8 insertions, 10 deletions

diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c
index a8ad05291b27..1022c2e1a2b0 100644
--- a/drivers/dma/dw/core.c
+++ b/drivers/dma/dw/core.c
@@ -230,7 +230,8 @@ static void dwc_dostart(struct dw_dma_chan *dwc, struct dw_desc *first)
 	/* ASSERT:  channel is idle */
 	if (dma_readl(dw, CH_EN) & dwc->mask) {
 		dev_err(chan2dev(&dwc->chan),
-			"BUG: Attempted to start non-idle channel\n");
+			"%s: BUG: Attempted to start non-idle channel\n",
+			__func__);
 		dwc_dump_chan_regs(dwc);
 
 		/* The tasklet will hopefully advance the queue... */
@@ -814,11 +815,8 @@ dwc_prep_slave_sg(struct dma_chan *chan, struct scatterlist *sgl,
 
 slave_sg_todev_fill_desc:
 			desc = dwc_desc_get(dwc);
-			if (!desc) {
-				dev_err(chan2dev(chan),
-					"not enough descriptors available\n");
+			if (!desc)
 				goto err_desc_get;
-			}
 
 			desc->lli.sar = mem;
 			desc->lli.dar = reg;
@@ -874,11 +872,8 @@ slave_sg_todev_fill_desc:
 
 slave_sg_fromdev_fill_desc:
 			desc = dwc_desc_get(dwc);
-			if (!desc) {
-				dev_err(chan2dev(chan),
-						"not enough descriptors available\n");
+			if (!desc)
 				goto err_desc_get;
-			}
 
 			desc->lli.sar = reg;
 			desc->lli.dar = mem;
@@ -922,6 +917,8 @@ slave_sg_fromdev_fill_desc:
 	return &first->txd;
 
 err_desc_get:
+	dev_err(chan2dev(chan),
+		"not enough descriptors available. Direction %d\n", direction);
 	dwc_desc_put(dwc, first);
 	return NULL;
 }
@@ -1261,7 +1258,8 @@ int dw_dma_cyclic_start(struct dma_chan *chan)
 	/* Assert channel is idle */
 	if (dma_readl(dw, CH_EN) & dwc->mask) {
 		dev_err(chan2dev(&dwc->chan),
-			"BUG: Attempted to start non-idle channel\n");
+			"%s: BUG: Attempted to start non-idle channel\n",
+			__func__);
 		dwc_dump_chan_regs(dwc);
 		spin_unlock_irqrestore(&dwc->lock, flags);
 		return -EBUSY;