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From: Pranith Kumar <pranith@gatech.edu>
To: dwmw2@infradead.org, joro@8bytes.org
Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org
Subject: [PATCH 1/1] use documented cmpxchg api
Date: Thu, 05 Jun 2014 18:19:51 -0400	[thread overview]
Message-ID: <5390ED07.2070009@gatech.edu> (raw)

use the documented atomic_cmpxchg instead of __cmpxchg64

This kills the last user of said API in drivers code.


Signed-off-by: Pranith Kumar <bobby.prani@gmail.com>
---
 drivers/iommu/intel-iommu.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/iommu/intel-iommu.c b/drivers/iommu/intel-iommu.c
index 6bb3277..270113f 100644
--- a/drivers/iommu/intel-iommu.c
+++ b/drivers/iommu/intel-iommu.c
@@ -293,7 +293,7 @@ static inline u64 dma_pte_addr(struct dma_pte *pte)
 	return pte->val & VTD_PAGE_MASK;
 #else
 	/* Must have a full atomic 64-bit read */
-	return  __cmpxchg64(&pte->val, 0ULL, 0ULL) & VTD_PAGE_MASK;
+	return  atomic_cmpxchg(&pte->val, 0ULL, 0ULL) & VTD_PAGE_MASK;
 #endif
 }
 
-- 
1.7.9.5

             reply	other threads:[~2014-06-05 22:19 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2014-06-05 22:19 Pranith Kumar [this message]
2014-06-06  0:34 ` [PATCH 1/1] use documented cmpxchg api Peter Hurley
2014-06-06  1:03   ` Pranith Kumar
2014-06-06 10:55     ` Peter Hurley
2014-06-06 14:27       ` Pranith Kumar

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