staging: dwc2: fix value of dma_mask
Passing the value DMA_BIT_MASK(31) to dma_set_mask() causes the dwc2-pci driver to sometimes fail (cannot enumerate the connected device). Change it to DMA_BIT_MASK(32) instead, which is a more sensible value anyway. Signed-off-by: Paul Zimmerman <paulz@synopsys.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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@ -2804,9 +2804,8 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
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/* Set device flags indicating whether the HCD supports DMA */
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if (hsotg->core_params->dma_enable > 0) {
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if (dma_set_mask(hsotg->dev, DMA_BIT_MASK(31)) < 0)
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dev_warn(hsotg->dev,
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"can't enable workaround for >2GB RAM\n");
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if (dma_set_mask(hsotg->dev, DMA_BIT_MASK(32)) < 0)
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dev_warn(hsotg->dev, "can't set DMA mask\n");
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if (dma_set_coherent_mask(hsotg->dev, DMA_BIT_MASK(31)) < 0)
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dev_warn(hsotg->dev,
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"can't enable workaround for >2GB RAM\n");
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