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[04/67] usb: dwc3: core: only setting the dma_mask when needed

Message ID 1413566234-13537-5-git-send-email-balbi@ti.com
State Accepted
Commit 19bacdc925055f020ad36da04bd72dc8b28637b8
Headers show

Commit Message

Felipe Balbi Oct. 17, 2014, 5:16 p.m. UTC 
From: Heikki Krogerus <heikki.krogerus@linux.intel.com>

If the probe drivers have already set the dma_mask, not
replacing the value.

Signed-off-by: Heikki Krogerus <heikki.krogerus@linux.intel.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>
---
 drivers/usb/dwc3/core.c | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)
diff mbox

Patch

diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
index ddfe771..1384300 100644
--- a/drivers/usb/dwc3/core.c
+++ b/drivers/usb/dwc3/core.c
@@ -715,9 +715,11 @@  static int dwc3_probe(struct platform_device *pdev)
 	spin_lock_init(&dwc->lock);
 	platform_set_drvdata(pdev, dwc);
 
-	dev->dma_mask	= dev->parent->dma_mask;
-	dev->dma_parms	= dev->parent->dma_parms;
-	dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask);
+	if (!dev->dma_mask) {
+		dev->dma_mask = dev->parent->dma_mask;
+		dev->dma_parms = dev->parent->dma_parms;
+		dma_set_coherent_mask(dev, dev->parent->coherent_dma_mask);
+	}
 
 	pm_runtime_enable(dev);
 	pm_runtime_get_sync(dev);