There was some code that cleared the dma_mask when dma was disabled in the driver. Given that clearing the mask doesn't actually tell the usb core we're not using dma, and a previous commit explicitely sets the hcd->self.uses_dma value, it seems these values are unneeded and can only potentially cause problems (when reloading a module, for example). Signed-off-by: Matthijs Kooijman <matthijs@xxxxxxxx> Acked-by: Paul Zimmerman <Paul.Zimmerman@xxxxxxxxxxxx> --- drivers/staging/dwc2/hcd.c | 3 --- 1 file changed, 3 deletions(-) diff --git a/drivers/staging/dwc2/hcd.c b/drivers/staging/dwc2/hcd.c index 50a379d..075e53b 100644 --- a/drivers/staging/dwc2/hcd.c +++ b/drivers/staging/dwc2/hcd.c @@ -2817,9 +2817,6 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq, if (dma_set_coherent_mask(hsotg->dev, DMA_BIT_MASK(31)) < 0) dev_warn(hsotg->dev, "can't enable workaround for >2GB RAM\n"); - } else { - dma_set_mask(hsotg->dev, 0); - dma_set_coherent_mask(hsotg->dev, 0); } hcd = usb_create_hcd(&dwc2_hc_driver, hsotg->dev, dev_name(hsotg->dev)); -- 1.8.3.rc1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html