tsec: Wait for both RX and TX to stop

When gracefully stopping the controller, the driver was continuing if
*either* RX or TX had stopped.  We need to wait for both, or the
controller could get into an invalid state.

Signed-off-by: Andy Fleming <afleming@freescale.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>

diff --git a/drivers/net/tsec.c b/drivers/net/tsec.c
index fd49eff183d0adff2b152b75f0e411d69499c368..3e4c3bd31b98231ce83f3bc2bba74865d4acadca 100644 (file)
--- a/drivers/net/tsec.c
+++ b/drivers/net/tsec.c
@@ -1082,7 +1082,8 @@ static void tsec_halt(struct eth_device *dev)
        regs->dmactrl &= ~(DMACTRL_GRS | DMACTRL_GTS);
        regs->dmactrl |= (DMACTRL_GRS | DMACTRL_GTS);
 
        regs->dmactrl &= ~(DMACTRL_GRS | DMACTRL_GTS);
        regs->dmactrl |= (DMACTRL_GRS | DMACTRL_GTS);
 

-       while (!(regs->ievent & (IEVENT_GRSC | IEVENT_GTSC))) ;
+       while ((regs->ievent & (IEVENT_GRSC | IEVENT_GTSC))
+               != (IEVENT_GRSC | IEVENT_GTSC)) ;

 
        regs->maccfg1 &= ~(MACCFG1_TX_EN | MACCFG1_RX_EN);
 
 
        regs->maccfg1 &= ~(MACCFG1_TX_EN | MACCFG1_RX_EN);