linux-kernel - [PATCH 1/2] drivers/ata: delete unused ata_using

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Date:	Fri, 25 Mar 2016 10:11:59 +0800
From:	Yaowei Bai <baiyaowei@...s.chinamobile.com>
To:	tj@...nel.org
Cc:	linux-ide@...r.kernel.org, linux-kernel@...r.kernel.org,
	baiyaowei@...s.chinamobile.com
Subject: [PATCH 1/2] drivers/ata: delete unused ata_using_mwdma function

There's no user of ata_using_mwdma since introduced by commit
b15b3ebae ("libata: Fix a large collection of DMA mode mismatches")
in 2008, so remove it.

Signed-off-by: Yaowei Bai <baiyaowei@...s.chinamobile.com>
---
 include/linux/libata.h | 7 -------
 1 file changed, 7 deletions(-)

diff --git a/include/linux/libata.h b/include/linux/libata.h
index 2c4ebef..2b01760 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -1759,13 +1759,6 @@ static inline unsigned long ata_deadline(unsigned long from_jiffies,
    change in future hardware and specs, secondly 0xFF means 'no DMA' but is
    > UDMA_0. Dyma ddreigiau */
 
-static inline int ata_using_mwdma(struct ata_device *adev)
-{
-	if (adev->dma_mode >= XFER_MW_DMA_0 && adev->dma_mode <= XFER_MW_DMA_4)
-		return 1;
-	return 0;
-}
-
 static inline int ata_using_udma(struct ata_device *adev)
 {
 	if (adev->dma_mode >= XFER_UDMA_0 && adev->dma_mode <= XFER_UDMA_7)
-- 
1.9.1