[PATCH] dmaengine: at_hdmac: ioremap and get irq early

[Rosen Penev <rosenp@gmail.com>]

The functions can return -EPROBE_DEFER. Call them before anything else
to avoid doing extra work.

Signed-off-by: Rosen Penev <rosenp@gmail.com>
---
 drivers/dma/at_hdmac.c | 17 ++++++++++-------
 1 file changed, 10 insertions(+), 7 deletions(-)

diff --git a/drivers/dma/at_hdmac.c b/drivers/dma/at_hdmac.c
index e5b30a57c477..2f6f5877fc3c 100644
--- a/drivers/dma/at_hdmac.c
+++ b/drivers/dma/at_hdmac.c
@@ -1943,11 +1943,20 @@ static void at_dma_off(struct at_dma *atdma)
 static int __init at_dma_probe(struct platform_device *pdev)
 {
 	struct at_dma		*atdma;
+	void __iomem		*regs;
 	int			irq;
 	int			err;
 	int			i;
 	const struct at_dma_platform_data *plat_dat;
 
+	regs = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(regs))
+		return PTR_ERR(regs);
+
+	irq = platform_get_irq(pdev, 0);
+	if (irq < 0)
+		return irq;
+
 	/* setup platform data for each SoC */
 	dma_cap_set(DMA_MEMCPY, at91sam9rl_config.cap_mask);
 	dma_cap_set(DMA_INTERLEAVE, at91sam9g45_config.cap_mask);
@@ -1968,13 +1977,7 @@ static int __init at_dma_probe(struct platform_device *pdev)
 	if (!atdma)
 		return -ENOMEM;
 
-	atdma->regs = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(atdma->regs))
-		return PTR_ERR(atdma->regs);
-
-	irq = platform_get_irq(pdev, 0);
-	if (irq < 0)
-		return irq;
+	atdma->regs = regs;
 
 	/* discover transaction capabilities */
 	atdma->dma_device.cap_mask = plat_dat->cap_mask;
-- 
2.55.0