diff options
| author | Giuseppe CAVALLARO <[email protected]> | 2014-08-27 08:20:04 +0200 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2014-08-29 19:54:36 -0700 |
| commit | b1dee4793fb8fec8e6b2efb68953b465a65c6b3e (patch) | |
| tree | 7b5eba0b83217f4214dae1468d38e24eedc2fdab | |
| parent | 7a4cecf74c165653b2d01301b301a8659438217e (diff) | |
stmmac: prevent false carrier sense detection
This patch is to w/a a problem that happens on some boxes when run at 10Mbps
Half duplex mode.
During the transmission the CSR signal is asserted for some time and the frames
aborted because of carrier sense error.
This is reported by MMC HW counter: txcarrier signal.
This actually is a false carrier so the frames are good and there is no reason
to ask for dropping them.
This patch so disables the Carrier Sense During Transmission
and this means that the MAC transmitter ignore the CRS signal
during frame transmission in Half-Duplex mode.
Signed-off-by: Giuseppe Cavallaro <[email protected]>
Acked-by: Vince Bridgers <[email protected]>
Acked-by: Ley Foon Tan <[email protected]>
Acked-by: Chen-Yu Tsai <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
| -rw-r--r-- | drivers/net/ethernet/stmicro/stmmac/dwmac1000.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h index 71b5419256c1..64d8f56a9c17 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac1000.h @@ -153,7 +153,7 @@ enum inter_frame_gap { #define GMAC_CONTROL_RE 0x00000004 /* Receiver Enable */ #define GMAC_CORE_INIT (GMAC_CONTROL_JD | GMAC_CONTROL_PS | GMAC_CONTROL_ACS | \ - GMAC_CONTROL_BE) + GMAC_CONTROL_BE | GMAC_CONTROL_DCRS) /* GMAC Frame Filter defines */ #define GMAC_FRAME_FILTER_PR 0x00000001 /* Promiscuous Mode */ |