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tsec: Wait for both RX and TX to stop

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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>
This commit is contained in:
Andy Fleming 2010-04-19 14:54:49 -05:00 committed by Ben Warren
parent a45dde2293
commit 538be58568
1 changed files with 2 additions and 1 deletions
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3
drivers/net/tsec.c
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@ -1082,7 +1082,8 @@ static void tsec_halt(struct eth_device *dev)
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);