ARM/dmaengine: edma: Remove limitation on the number of eDMA controllers

Since the driver stack no longer depends on lookup with id number in a
global array of pointers, the limitation for the number of eDMAs are no
longer needed. We can handle as many eDMAs in legacy and DT boot as we have
memory for them to allocate the needed structures.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>

1 files changed, 5 insertions, 17 deletions

diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c
index 03692520812a..5b747f1bc8b5 100644
--- a/arch/arm/common/edma.c
+++ b/arch/arm/common/edma.c
@@ -1227,24 +1227,7 @@ static int edma_probe(struct platform_device *pdev)
 		.parent = &pdev->dev,
 	};
 
-	/* When booting with DT the pdev->id is -1 */
-	if (dev_id < 0)
-		dev_id = arch_num_cc;
-
-	if (dev_id >= EDMA_MAX_CC) {
-		dev_err(dev,
-			"eDMA3 with device id 0 and 1 is supported (id: %d)\n",
-			dev_id);
-		return -EINVAL;
-	}
-
 	if (node) {
-		/* Check if this is a second instance registered */
-		if (arch_num_cc) {
-			dev_err(dev, "only one EDMA instance is supported via DT\n");
-			return -ENODEV;
-		}
-
 		info = edma_setup_info_from_dt(dev, node);
 		if (IS_ERR(info)) {
 			dev_err(dev, "failed to get DT data\n");
@@ -1278,6 +1261,11 @@ static int edma_probe(struct platform_device *pdev)
 
 	cc->dev = dev;
 	cc->id = dev_id;
+	/* When booting with DT the pdev->id is -1 */
+	if (dev_id < 0) {
+		cc->id = 0;
+		dev_id = arch_num_cc;
+	}
 	dev_set_drvdata(dev, cc);
 
 	cc->base = devm_ioremap_resource(dev, mem);