From: Matthew Wilcox <matthew@wil.cx>
Date: Thu, 21 Sep 2006 02:36:42 +0000 (-0600)
Subject: [PARISC] Make DMA routines more stubby
X-Git-Tag: v2.6.19-rc1~34^2~4
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=99b6e9be71b9ad2c50c0d160b5af18848fee466d;p=linux-2.6

[PARISC] Make DMA routines more stubby

We were pretending to use the GENERIC_ISA_DMA routines, but never
selected that symbol.  Since ISA DMA is known to not work right now,
just remove the attempts to acquire the dma_spin_lock to fix compile
warnings.

Signed-off-by: Matthew Wilcox <willy@parisc-linux.org>
Signed-off-by: Kyle McMartin <kyle@parisc-linux.org>
---

diff --git a/include/asm-parisc/dma.h b/include/asm-parisc/dma.h
index 9979c3cb37..da2cf373e3 100644
--- a/include/asm-parisc/dma.h
+++ b/include/asm-parisc/dma.h
@@ -72,18 +72,13 @@
 #define DMA2_MASK_ALL_REG       0xDE    /* all-channels mask (w) */
 #define DMA2_EXT_MODE_REG	(0x400 | DMA2_MODE_REG)
 
-extern spinlock_t dma_spin_lock;
-
 static __inline__ unsigned long claim_dma_lock(void)
 {
-	unsigned long flags;
-	spin_lock_irqsave(&dma_spin_lock, flags);
-	return flags;
+	return 0;
 }
 
 static __inline__ void release_dma_lock(unsigned long flags)
 {
-	spin_unlock_irqrestore(&dma_spin_lock, flags);
 }