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fec mx27: add timeout for transmission 

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Sascha Hauer 2009-02-20 18:05:11 +01:00
parent faa4c039c3
commit 5392235bdd
1 changed files with 7 additions and 1 deletions
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8
drivers/net/fec_imx27.c
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@ -431,6 +431,7 @@ static void fec_halt(struct eth_device *dev)
static int fec_send(struct eth_device *dev, void *eth_data, int data_length)
{
unsigned int status;
uint64_t tmo;
/*
* This routine transmits one frame. This routine only accepts
@ -476,8 +477,12 @@ static int fec_send(struct eth_device *dev, void *eth_data, int data_length)
/*
* wait until frame is sent .
*/
tmo = get_time_ns();
while (readw(&fec->tbd_base[fec->tbd_index].status) & FEC_TBD_READY) {
/* FIXME: Timeout */
if (is_timeout(tmo, 1 * SECOND)) {
printf("transmission timeout\n");
break;
}
}
/* for next transmission use the other buffer */
@ -508,6 +513,7 @@ static int fec_recv(struct eth_device *dev)
*/
ievent = readl(&fec->eth->ievent);
writel(ievent, &fec->eth->ievent);
if (ievent & (FEC_IEVENT_BABT | FEC_IEVENT_XFIFO_ERROR |
FEC_IEVENT_RFIFO_ERROR)) {
/* BABT, Rx/Tx FIFO errors */