diff options
| author | Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> | 2012-03-05 19:00:34 +0100 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2012-03-06 09:45:57 +0100 |
| commit | f4b9f8a9afff83b084f93898d9c8297991187cf3 (patch) | |
| tree | f6f8761465a711cab8b6968539f0a3701fb5423b /drivers/net | |
| parent | beb36c510bd6abf80a20148bf165a990c69fed8a (diff) | |
| download | barebox-f4b9f8a9afff83b084f93898d9c8297991187cf3.tar.gz barebox-f4b9f8a9afff83b084f93898d9c8297991187cf3.tar.xz | |
macb: add timeout on send
This will ensure that we send an other packet only when the first one is send.
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/macb.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/net/macb.c b/drivers/net/macb.c index ab0d1af30b..ea8ae82dfd 100644 --- a/drivers/net/macb.c +++ b/drivers/net/macb.c @@ -120,6 +120,11 @@ static int macb_send(struct eth_device *edev, void *packet, barrier(); writel(MACB_BIT(TE) | MACB_BIT(RE) | MACB_BIT(TSTART), macb->regs + MACB_NCR); + wait_on_timeout(100 * MSECOND, + !(macb->tx_ring[0].ctrl & TXBUF_USED)); + + ctrl = macb->tx_ring[0].ctrl; + if (ctrl & TXBUF_UNDERRUN) printf("TX underrun\n"); if (ctrl & TXBUF_EXHAUSTED) |