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net: systemport: wait for packet in umac_enable_set()

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When umac_enable_set() is used to disable the UniMAC receiver or
transmitter, we need to make sure that we wait for a full-sized packet
to be processed because the UniMAC hardware stops on a packet boundary,
not immediately.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Florian Fainelli 2014-05-15 14:33:53 -07:00 committed by David S. Miller
parent b1ff53e9fd
commit 00b91c693e
1 changed files with 6 additions and 0 deletions
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6
drivers/net/ethernet/broadcom/bcmsysport.c
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@ -1244,6 +1244,12 @@ static inline void umac_enable_set(struct bcm_sysport_priv *priv,
else
reg &= ~(CMD_RX_EN | CMD_TX_EN);
umac_writel(priv, reg, UMAC_CMD);
/* UniMAC stops on a packet boundary, wait for a full-sized packet
* to be processed (1 msec).
*/
if (enable == 0)
usleep_range(1000, 2000);
}
static inline int umac_reset(struct bcm_sysport_priv *priv)