dmaengine: PL08x: move DMA signal muxing into slave prepare code

Gitweb:     http://git.kernel.org/linus/;a=commit;h=c48d49632989920a7903c2e14e7a6ddff048d1aa
Commit:     c48d49632989920a7903c2e14e7a6ddff048d1aa
Parent:     a936e793136b4238ef287cfbbdd25ebb78214529
Author:     Russell King <rmk+kernel <at> arm.linux.org.uk>
AuthorDate: Fri May 25 11:48:51 2012 +0100
Committer:  Russell King <rmk+kernel <at> arm.linux.org.uk>
CommitDate: Sun Jul 1 14:15:53 2012 +0100

    dmaengine: PL08x: move DMA signal muxing into slave prepare code

    Move the DMA request muxing into the slave prepare code and txd
    release/completion code.  This means we only hold the DMA request
    mux while there are descriptors waiting to be started or are in
    progress.

    This leaves txd->direction as a write-only variable; remove it.

    Acked-by: Linus Walleij <linus.walleij <at> linaro.org>
    Tested-by: Linus Walleij <linus.walleij <at> linaro.org>
    Signed-off-by: Russell King <rmk+kernel <at> arm.linux.org.uk>
---
 drivers/dma/amba-pl08x.c |   79 ++++++++++++++++++---------------------------
 1 files changed, 32 insertions(+), 47 deletions(-)

diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c
index 54e3eb0..e04ca0b 100644
--- a/drivers/dma/amba-pl08x.c
+++ b/drivers/dma/amba-pl08x.c
 <at>  <at>  -168,7 +168,6  <at>  <at>  struct pl08x_sg {
  *  <at> tx: async tx descriptor