gianfar: Use gfar_halt to stop DMA in gfar_probe
gfar_halt does everything we want to do there, including disabling
TX/RX. It also doesn't unnecessarily enable DMA if it's already
stopped.
Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/drivers/net/gianfar.c b/drivers/net/gianfar.c
index 2635f5b..55e319f 100644
--- a/drivers/net/gianfar.c
+++ b/drivers/net/gianfar.c
@@ -225,19 +225,7 @@
/* Stop the DMA engine now, in case it was running before */
/* (The firmware could have used it, and left it running). */
- /* To do this, we write Graceful Receive Stop and Graceful */
- /* Transmit Stop, and then wait until the corresponding bits */
- /* in IEVENT indicate the stops have completed. */
- tempval = gfar_read(&priv->regs->dmactrl);
- tempval &= ~(DMACTRL_GRS | DMACTRL_GTS);
- gfar_write(&priv->regs->dmactrl, tempval);
-
- tempval = gfar_read(&priv->regs->dmactrl);
- tempval |= (DMACTRL_GRS | DMACTRL_GTS);
- gfar_write(&priv->regs->dmactrl, tempval);
-
- while (!(gfar_read(&priv->regs->ievent) & (IEVENT_GRSC | IEVENT_GTSC)))
- cpu_relax();
+ gfar_halt(dev);
/* Reset MAC layer */
gfar_write(&priv->regs->maccfg1, MACCFG1_SOFT_RESET);