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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>
This commit is contained in:
Matthijs Kooijman 2013-07-24 13:29:22 +02:00 committed by Greg Kroah-Hartman
parent aaba4b5882
commit f4616af018
1 changed files with 0 additions and 3 deletions
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3
drivers/staging/dwc2/hcd.c
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@ -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));