From: Christoph Hellwig <hch@lst.de>
Date: Tue, 10 Nov 2015 22:45:42 +0000 (-0800)
Subject: sfc: don't call dma_supported
X-Git-Tag: firefly_0821_release~176^2~716^2~3
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=8722b8fbceecfb63bdd74674fc5e49a8c511a1f6;p=firefly-linux-kernel-4.4.55.git

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@lst.de>
Cc: Solarflare linux maintainers <linux-net-drivers@solarflare.com>
Cc: Shradha Shah <sshah@solarflare.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/drivers/net/ethernet/sfc/efx.c b/drivers/net/ethernet/sfc/efx.c
index 6e11ee6173ce..d288f1c928de 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) {