EDMA: remove unused calls

Mr. Grep reports that the EDMA chain/unchain calls are unused.
Same in the old 2.6.10 code; there seems to be no value in
those routines.  Delete!  Saves a few bytes.
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>

arch/arm/mach-davinci/dma.c

@@ -1124,45 +1124,6 @@ void davinci_dma_unlink_lch(int lch, int lch_que)
 }
 EXPORT_SYMBOL(davinci_dma_unlink_lch);
 
-/******************************************************************************
- *
- * DMA channel chain - chains the two logical channels passed through by
- * ARGUMENTS:
- * lch - logical channel number, where the tcc field is to be set
- * lch_que - logical channel number or the param entry number, which is to be
- *             chained to lch
- *
- *****************************************************************************/
-void davinci_dma_chain_lch(int lch, int lch_que)
-{
-	if ((lch >= 0) && (lch < DAVINCI_EDMA_NUM_DMACH) &&
-	    (lch_que >= 0) && (lch_que < DAVINCI_EDMA_NUM_DMACH)) {
-		/* program tcc */
-		edma_parm_modify(PARM_OPT, lch, ~TCC,
-				((lch_que & 0x3f) << 12) | TCCHEN);
-	}
-}
-EXPORT_SYMBOL(davinci_dma_chain_lch);
-
-/******************************************************************************
- *
- * DMA channel unchain - unchain the two logical channels passed through by
- * ARGUMENTS:
- * lch - logical channel number, from which the tcc field is to be removed
- * lch_que - logical channel number or the param entry number, which is to be
- *             unchained from lch
- *
- *****************************************************************************/
-void davinci_dma_unchain_lch(int lch, int lch_que)
-{
-	/* reset TCCHEN */
-	if ((lch >= 0) && (lch < DAVINCI_EDMA_NUM_DMACH) &&
-	    (lch_que >= 0) && (lch_que < DAVINCI_EDMA_NUM_DMACH)) {
-		edma_parm_and(PARM_OPT, lch, ~TCCHEN);
-	}
-}
-EXPORT_SYMBOL(davinci_dma_unchain_lch);
-
 /******************************************************************************
  *
  * It cleans ParamEntry qand bring back EDMA to initial state if media has

arch/arm/mach-davinci/include/mach/edma.h

@@ -245,28 +245,6 @@ void davinci_dma_link_lch(int lch_head, int lch_queue);
  *****************************************************************************/
 void davinci_dma_unlink_lch(int lch_head, int lch_queue);
 
-/******************************************************************************
- *
- * DMA channel chain - chains the two logical channels passed through by
- * ARGUMENTS:
- * lch_head - logical channel number, from which the link field is to be removed
- * lch_queue - logical channel number or the param entry number, which is to be
- *             unlinked from lch_head
- *
- *****************************************************************************/
-void davinci_dma_chain_lch(int lch_head, int lch_queue);
-
-/******************************************************************************
- *
- * DMA channel unchain - unchain the two logical channels passed through by
- * ARGUMENTS:
- * lch_head - logical channel number, from which the link field is to be removed
- * lch_queue - logical channel number or the param entry number, which is to be
- *             unlinked from lch_head
- *
- *****************************************************************************/
-void davinci_dma_unchain_lch(int lch_head, int lch_queue);
-
 void davinci_dma_getposition(int lch, dma_addr_t *src, dma_addr_t *dst);
 void davinci_clean_channel(int lch);
 void davinci_pause_dma(int lch);