In some cases we got the device without dma_mask configured. We have to apply
the default value to avoid crashes during memory mapping.
Signed-off-by: Andy Shevchenko <andriy.shevche...@linux.intel.com>
---
drivers/dma/dw_dmac.c | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/drivers/dma/dw_dmac.c b/drivers/dma/dw_dmac.c
index e8d0679..a572a1e 100644
--- a/drivers/dma/dw_dmac.c
+++ b/drivers/dma/dw_dmac.c
@@ -1673,6 +1673,12 @@ static int dw_probe(struct platform_device *pdev)
if (IS_ERR(regs))
return PTR_ERR(regs);
+ /* Apply default dma_mask if needed */
+ if (!pdev->dev.dma_mask) {
+ pdev->dev.dma_mask = &pdev->dev.coherent_dma_mask;
+ pdev->dev.coherent_dma_mask = DMA_BIT_MASK(32);
+ }
+
dw_params = dma_read_byaddr(regs, DW_PARAMS);
autocfg = dw_params >> DW_PARAMS_EN & 0x1;
--
1.7.10.4
--
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