staging: dwc2: Don't touch the dma_mask when dma is disabled

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@stdin.nl>
Acked-by: Paul Zimmerman <Paul.Zimmerman@synopsys.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/staging/dwc2/hcd.c b/drivers/staging/dwc2/hcd.c
index fbacf6a9f72ea3e45005b79740571d5efcbf3371..32b52ad5f74fa17a866ee9f5f780d730977a0b38 100644 (file)
--- a/drivers/staging/dwc2/hcd.c
+++ b/drivers/staging/dwc2/hcd.c
@@ -2845,9 +2845,6 @@ int dwc2_hcd_init(struct dwc2_hsotg *hsotg, int irq,
                        dev_warn(hsotg->dev, "can't set DMA mask\n");
                if (dma_set_coherent_mask(hsotg->dev, DMA_BIT_MASK(32)) < 0)
                        dev_warn(hsotg->dev, "can't set coherent DMA mask\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));