Commit 9097103f authored by Robert Jarzmik's avatar Robert Jarzmik Committed by Brian Norris

mtd: nand: pxa3xx_nand: fix dmaengine initialization

When the driver is initialized in a pure device-tree platform, the
driver's probe fails allocating the dma channel :
[  525.624435] pxa3xx-nand 43100000.nand: no resource defined for data DMA
[  525.632088] pxa3xx-nand 43100000.nand: alloc nand resource failed

The reason is that the DMA IO resource is not acquired through platform
resources but by OF bindings.

Fix this by ensuring that DMA IO resources are only queried in the non
device-tree case.

Fixes: 8f5ba31a ("mtd: nand: pxa3xx-nand: switch to dmaengine")
Signed-off-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
Acked-by: default avatarEzequiel Garcia <ezequiel@vanguardiasur.com.ar>
Signed-off-by: default avatarBrian Norris <computersforpeace@gmail.com>
parent f671a1f3
...@@ -1795,7 +1795,7 @@ static int alloc_nand_resource(struct platform_device *pdev) ...@@ -1795,7 +1795,7 @@ static int alloc_nand_resource(struct platform_device *pdev)
if (ret < 0) if (ret < 0)
return ret; return ret;
if (use_dma) { if (!np && use_dma) {
r = platform_get_resource(pdev, IORESOURCE_DMA, 0); r = platform_get_resource(pdev, IORESOURCE_DMA, 0);
if (r == NULL) { if (r == NULL) {
dev_err(&pdev->dev, dev_err(&pdev->dev,
......
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