4.19-stable review patch. If anyone has any objections, please let me know.
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From: Paul Cercueil paul@crapouillou.net
[ Upstream commit 54f919a04cf221bc1601d1193682d4379dacacbd ]
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 Signed-off-by: Vinod Koul vkoul@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/dma/dma-jz4780.c | 5 +++++ 1 file changed, 5 insertions(+)
--- a/drivers/dma/dma-jz4780.c +++ b/drivers/dma/dma-jz4780.c @@ -761,6 +761,11 @@ static int jz4780_dma_probe(struct platf 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;