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| author | Florian Fainelli | 2014-05-15 23:33:53 +0200 |
|---|---|---|
| committer | David S. Miller | 2014-05-16 22:41:40 +0200 |
| commit | 00b91c693e9da851385eed8c9492ac0b0d4e4896 (patch) | |
| tree | 702e57caf0fe830c9de5366ebf08c862e0a28ef6 /drivers/net/ethernet/broadcom/bcmsysport.c | |
| parent | net: systemport: fix dma_unmap_single() len (diff) | |
| download | kernel-qcow2-linux-00b91c693e9da851385eed8c9492ac0b0d4e4896.tar.gz kernel-qcow2-linux-00b91c693e9da851385eed8c9492ac0b0d4e4896.tar.xz kernel-qcow2-linux-00b91c693e9da851385eed8c9492ac0b0d4e4896.zip | |
net: systemport: wait for packet in umac_enable_set()
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>
Diffstat (limited to 'drivers/net/ethernet/broadcom/bcmsysport.c')
| -rw-r--r-- | drivers/net/ethernet/broadcom/bcmsysport.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/ethernet/broadcom/bcmsysport.c b/drivers/net/ethernet/broadcom/bcmsysport.c index 26030d67518b..d40c5b969e9e 100644 --- a/drivers/net/ethernet/broadcom/bcmsysport.c +++ b/drivers/net/ethernet/broadcom/bcmsysport.c @@ -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) |