diff options
Diffstat (limited to 'drivers/staging/dwc2')
| -rw-r--r-- | drivers/staging/dwc2/hcd.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/staging/dwc2/hcd.c b/drivers/staging/dwc2/hcd.c index d4ef5f3..f77e663 100644 --- a/drivers/staging/dwc2/hcd.c +++ b/drivers/staging/dwc2/hcd.c @@ -2830,6 +2830,15 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq, /* Validate parameter values */ dwc2_set_parameters(hsotg, params); + /* Check if the bus driver or platform code has setup a dma_mask */ + if (hsotg->core_params->dma_enable > 0 && + hsotg->dev->dma_mask == NULL) { + dev_warn(hsotg->dev, + "dma_mask not set, disabling DMA\n"); + hsotg->core_params->dma_enable = 0; + hsotg->core_params->dma_desc_enable = 0; + } + /* Set device flags indicating whether the HCD supports DMA */ if (hsotg->core_params->dma_enable > 0) { if (dma_set_mask(hsotg->dev, DMA_BIT_MASK(32)) < 0) |