[v5,02/18] dmaengine: dma-jz4780: Return error if not probed from DT
diff mbox series

Message ID 20180829213300.22829-3-paul@crapouillou.net
State Accepted
Headers show
Series
  • JZ4780 DMA patchset v5
Related show

Commit Message

Paul Cercueil Aug. 29, 2018, 9:32 p.m. UTC
The driver calls clk_get() with the clock name set to NULL, which means
that the driver could only work when probed from devicetree. From now
on, we explicitly require the driver to be probed from devicetree.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
Tested-by: Mathieu Malaterre <malat@debian.org>
---

Notes:
     v2: New patch
    
     v3: No change
    
     v4: No change
    
     v5: No change

 drivers/dma/dma-jz4780.c | 5 +++++
 1 file changed, 5 insertions(+)

Patch
diff mbox series

diff --git a/drivers/dma/dma-jz4780.c b/drivers/dma/dma-jz4780.c
index 85820a2d69d4..987899610b46 100644
--- a/drivers/dma/dma-jz4780.c
+++ b/drivers/dma/dma-jz4780.c
@@ -761,6 +761,11 @@  static int jz4780_dma_probe(struct platform_device *pdev)
 	struct resource *res;
 	int i, ret;
 
+	if (!dev->of_node) {
+		dev_err(dev, "This driver must be probed from devicetree\n");
+		return -EINVAL;
+	}
+
 	jzdma = devm_kzalloc(dev, sizeof(*jzdma), GFP_KERNEL);
 	if (!jzdma)
 		return -ENOMEM;