From: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Date: Wed, 7 Jul 2010 23:52:37 +0000 (+0000)
Subject: cxgb4vf: remove obsolete DECLARE_PCI_UNMAP_ADDR usage
X-Git-Tag: MMI-PSA29.97-13-9~23092^2~310
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=57b2eaf7ddeae307fac202d82a6fabf5976e575b;p=GitHub%2FMotorolaMobilityLLC%2Fkernel-slsi.git

cxgb4vf: remove obsolete DECLARE_PCI_UNMAP_ADDR usage

We could use DEFINE_DMA_UNMAP_ADDR instead but using
CONFIG_NEED_DMA_MAP_STATE is a simpler way to see if a platform does
real DMA unmapping.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: David S. Miller <davem@davemloft.net>
---

diff --git a/drivers/net/cxgb4vf/sge.c b/drivers/net/cxgb4vf/sge.c
index 3a7c02f98a4d..4bc1858dc303 100644
--- a/drivers/net/cxgb4vf/sge.c
+++ b/drivers/net/cxgb4vf/sge.c
@@ -228,15 +228,11 @@ static inline bool is_buf_mapped(const struct rx_sw_desc *sdesc)
  */
 static inline int need_skb_unmap(void)
 {
-	/*
-	 * This structure is used to tell if the platfrom needs buffer
-	 * unmapping by checking if DECLARE_PCI_UNMAP_ADDR defines anything.
-	 */
-	struct dummy {
-		DECLARE_PCI_UNMAP_ADDR(addr);
-	};
-
-	return sizeof(struct dummy) != 0;
+#ifdef CONFIG_NEED_DMA_MAP_STATE
+	return 1;
+#else
+	return 0;
+#endif
 }
 
 /**