diff mbox series

[v4,02/18] dmaengine: dma-jz4780: Return error if not probed from DT

Message ID 20180807114218.20091-3-paul@crapouillou.net (mailing list archive)
State Changes Requested
Headers show
Series JZ47xx DMA patchset v4 | expand

Commit Message

Paul Cercueil Aug. 7, 2018, 11:42 a.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>
---
 drivers/dma/dma-jz4780.c | 5 +++++
 1 file changed, 5 insertions(+)

 v2: New patch

 v3: No change

 v4: No change
diff mbox series

Patch

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;