Merge tag 'dmaengine-5.3-rc1' of git://git.infradead.org/users/vkoul/slave-dma

Pull dmaengine updates from Vinod Koul:

 - Add support in dmaengine core to do device node checks for DT devices
   and update bunch of drivers to use that and remove open coding from
   drivers

 - New driver/driver support for new hardware, namely:
     - MediaTek UART APDMA
     - Freescale i.mx7ulp edma2
     - Synopsys eDMA IP core version 0
     - Allwinner H6 DMA

 - Updates to axi-dma and support for interleaved cyclic transfers

 - Greg's debugfs return value check removals on drivers

 - Updates to stm32-dma, hsu, dw, pl330, tegra drivers

* tag 'dmaengine-5.3-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (68 commits)
  dmaengine: Revert "dmaengine: fsl-edma: add i.mx7ulp edma2 version support"
  dmaengine: at_xdmac: check for non-empty xfers_list before invoking callback
  Documentation: dmaengine: clean up description of dmatest usage
  dmaengine: tegra210-adma: remove PM_CLK dependency
  dmaengine: fsl-edma: add i.mx7ulp edma2 version support
  dt-bindings: dma: fsl-edma: add new i.mx7ulp-edma
  dmaengine: fsl-edma-common: version check for v2 instead
  dmaengine: fsl-edma-common: move dmamux register to another single function
  dmaengine: fsl-edma: add drvdata for fsl-edma
  dmaengine: Revert "dmaengine: fsl-edma: support little endian for edma driver"
  dmaengine: rcar-dmac: Reject zero-length slave DMA requests
  dmaengine: dw: Enable iDMA 32-bit on Intel Elkhart Lake
  dmaengine: dw-edma: fix semicolon.cocci warnings
  dmaengine: sh: usb-dmac: Use [] to denote a flexible array member
  dmaengine: dmatest: timeout value of -1 should specify infinite wait
  dmaengine: dw: Distinguish ->remove() between DW and iDMA 32-bit
  dmaengine: fsl-edma: support little endian for edma driver
  dmaengine: hsu: Revert "set HSU_CH_MTSR to memory width"
  dmagengine: pl330: add code to get reset property
  dt-bindings: pl330: document the optional resets property
  ...

1 files changed, 11 insertions, 45 deletions

diff --git a/drivers/dma/pxa_dma.c b/drivers/dma/pxa_dma.c
index 468c234cb3be..349fb312c872 100644
--- a/drivers/dma/pxa_dma.c
+++ b/drivers/dma/pxa_dma.c
@@ -129,7 +129,6 @@ struct pxad_device {
 	spinlock_t			phy_lock;	/* Phy association */
 #ifdef CONFIG_DEBUG_FS
 	struct dentry			*dbgfs_root;
-	struct dentry			*dbgfs_state;
 	struct dentry			**dbgfs_chan;
 #endif
 };
@@ -323,31 +322,18 @@ static struct dentry *pxad_dbg_alloc_chan(struct pxad_device *pdev,
 					     int ch, struct dentry *chandir)
 {
 	char chan_name[11];
-	struct dentry *chan, *chan_state = NULL, *chan_descr = NULL;
-	struct dentry *chan_reqs = NULL;
+	struct dentry *chan;
 	void *dt;
 
 	scnprintf(chan_name, sizeof(chan_name), "%d", ch);
 	chan = debugfs_create_dir(chan_name, chandir);
 	dt = (void *)&pdev->phys[ch];
 
-	if (chan)
-		chan_state = debugfs_create_file("state", 0400, chan, dt,
-						 &chan_state_fops);
-	if (chan_state)
-		chan_descr = debugfs_create_file("descriptors", 0400, chan, dt,
-						 &descriptors_fops);
-	if (chan_descr)
-		chan_reqs = debugfs_create_file("requesters", 0400, chan, dt,
-						&requester_chan_fops);
-	if (!chan_reqs)
-		goto err_state;
+	debugfs_create_file("state", 0400, chan, dt, &chan_state_fops);
+	debugfs_create_file("descriptors", 0400, chan, dt, &descriptors_fops);
+	debugfs_create_file("requesters", 0400, chan, dt, &requester_chan_fops);
 
 	return chan;
-
-err_state:
-	debugfs_remove_recursive(chan);
-	return NULL;
 }
 
 static void pxad_init_debugfs(struct pxad_device *pdev)
@@ -355,40 +341,20 @@ static void pxad_init_debugfs(struct pxad_device *pdev)
 	int i;
 	struct dentry *chandir;
 
-	pdev->dbgfs_root = debugfs_create_dir(dev_name(pdev->slave.dev), NULL);
-	if (IS_ERR(pdev->dbgfs_root) || !pdev->dbgfs_root)
-		goto err_root;
-
-	pdev->dbgfs_state = debugfs_create_file("state", 0400, pdev->dbgfs_root,
-						pdev, &state_fops);
-	if (!pdev->dbgfs_state)
-		goto err_state;
-
 	pdev->dbgfs_chan =
-		kmalloc_array(pdev->nr_chans, sizeof(*pdev->dbgfs_state),
+		kmalloc_array(pdev->nr_chans, sizeof(struct dentry *),
 			      GFP_KERNEL);
 	if (!pdev->dbgfs_chan)
-		goto err_alloc;
+		return;
+
+	pdev->dbgfs_root = debugfs_create_dir(dev_name(pdev->slave.dev), NULL);
+
+	debugfs_create_file("state", 0400, pdev->dbgfs_root, pdev, &state_fops);
 
 	chandir = debugfs_create_dir("channels", pdev->dbgfs_root);
-	if (!chandir)
-		goto err_chandir;
 
-	for (i = 0; i < pdev->nr_chans; i++) {
+	for (i = 0; i < pdev->nr_chans; i++)
 		pdev->dbgfs_chan[i] = pxad_dbg_alloc_chan(pdev, i, chandir);
-		if (!pdev->dbgfs_chan[i])
-			goto err_chans;
-	}
-
-	return;
-err_chans:
-err_chandir:
-	kfree(pdev->dbgfs_chan);
-err_alloc:
-err_state:
-	debugfs_remove_recursive(pdev->dbgfs_root);
-err_root:
-	pr_err("pxad: debugfs is not available\n");
 }
 
 static void pxad_cleanup_debugfs(struct pxad_device *pdev)