staging: octeon-usb: use a helper function to set the DMA mask
diff mbox series

Message ID 20181204221926.19833-1-aaro.koskinen@iki.fi
State Accepted
Commit b5630e3019b6ddad12aafdbb7b44114690f0a679
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Series
  • staging: octeon-usb: use a helper function to set the DMA mask
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Commit Message

Aaro Koskinen Dec. 4, 2018, 10:19 p.m. UTC
Use a helper function to set the DMA mask.

Signed-off-by: Aaro Koskinen <aaro.koskinen@iki.fi>
---
 drivers/staging/octeon-usb/octeon-hcd.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

Patch
diff mbox series

diff --git a/drivers/staging/octeon-usb/octeon-hcd.c b/drivers/staging/octeon-usb/octeon-hcd.c
index 9c766f5b812f..14982b6472a0 100644
--- a/drivers/staging/octeon-usb/octeon-hcd.c
+++ b/drivers/staging/octeon-usb/octeon-hcd.c
@@ -50,6 +50,7 @@ 
 #include <linux/module.h>
 #include <linux/usb/hcd.h>
 #include <linux/prefetch.h>
+#include <linux/dma-mapping.h>
 #include <linux/platform_device.h>
 
 #include <asm/octeon/octeon.h>
@@ -3606,8 +3607,9 @@  static int octeon_usb_probe(struct platform_device *pdev)
 	 * Set the DMA mask to 64bits so we get buffers already translated for
 	 * DMA.
 	 */
-	dev->coherent_dma_mask = ~0;
-	dev->dma_mask = &dev->coherent_dma_mask;
+	i = dma_coerce_mask_and_coherent(dev, DMA_BIT_MASK(64));
+	if (i)
+		return i;
 
 	/*
 	 * Only cn52XX and cn56XX have DWC_OTG USB hardware and the