linux-kernel - [PATCH 11/15] sfc: don't call dma

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Message-Id: <1443885579-7094-12-git-send-email-hch@lst.de>
Date:	Sat,  3 Oct 2015 17:19:35 +0200
From:	Christoph Hellwig <hch@....de>
To:	Andrew Morton <akpm@...ux-foundation.org>,
	Don Fry <pcnet32@...ntier.com>,
	Oliver Neukum <oneukum@...e.com>
Cc:	linux-net-drivers@...arflare.com, dri-devel@...ts.freedesktop.org,
	linux-media@...r.kernel.org, netdev@...r.kernel.org,
	linux-parisc@...r.kernel.org, linux-serial@...r.kernel.org,
	linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 11/15] sfc: don't call dma_supported

dma_set_mask already checks for a supported DMA mask before updating it,
the call to dma_supported is redundant.

Signed-off-by: Christoph Hellwig <hch@....de>
---
 drivers/net/ethernet/sfc/efx.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 974637d..4abe886 100644
--- a/drivers/net/ethernet/sfc/efx.c
+++ b/drivers/net/ethernet/sfc/efx.c
@@ -1247,11 +1247,9 @@ static int efx_init_io(struct efx_nic *efx)
 	 * masks event though they reject 46 bit masks.
 	 */
 	while (dma_mask > 0x7fffffffUL) {
-		if (dma_supported(&pci_dev->dev, dma_mask)) {
-			rc = dma_set_mask_and_coherent(&pci_dev->dev, dma_mask);
-			if (rc == 0)
-				break;
-		}
+		rc = dma_set_mask_and_coherent(&pci_dev->dev, dma_mask);
+		if (rc == 0)
+			break;
 		dma_mask >>= 1;
 	}
 	if (rc) {
-- 
1.9.1

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