From: Tom Lendacky <thomas.lendacky@xxxxxxx>
[ Upstream commit f8ab263d4d48e6dab752029bf562f20a2ee630ed ]
There are cables that exist that can support speeds in excess of 10GbE.
The driver, however, restricts the EEPROM advertised nominal bitrate to
a specific range, which can prevent usage of cables that can support,
for example, up to 25GbE.
Rather than checking that an active or passive cable supports a specific
range, only check for a minimum supported speed.
Fixes: abf0a1c2b26a ("amd-xgbe: Add support for SFP+ modules")
Signed-off-by: Tom Lendacky <thomas.lendacky@xxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c | 14 ++------------
1 file changed, 2 insertions(+), 12 deletions(-)
diff --git a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
index c7b0d69ee62f..1ef04326a572 100644
--- a/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
+++ b/drivers/net/ethernet/amd/xgbe/xgbe-phy-v2.c
@@ -237,10 +237,7 @@ enum xgbe_sfp_speed {
#define XGBE_SFP_BASE_BR 12
#define XGBE_SFP_BASE_BR_1GBE_MIN 0x0a
-#define XGBE_SFP_BASE_BR_1GBE_MAX 0x0d
#define XGBE_SFP_BASE_BR_10GBE_MIN 0x64
-#define XGBE_SFP_BASE_BR_10GBE_MAX 0x68
-#define XGBE_MOLEX_SFP_BASE_BR_10GBE_MAX 0x78
#define XGBE_SFP_BASE_CU_CABLE_LEN 18
@@ -827,29 +824,22 @@ static void xgbe_phy_sfp_phy_settings(struct xgbe_prv_data *pdata)
static bool xgbe_phy_sfp_bit_rate(struct xgbe_sfp_eeprom *sfp_eeprom,
enum xgbe_sfp_speed sfp_speed)
{
- u8 *sfp_base, min, max;
+ u8 *sfp_base, min;
sfp_base = sfp_eeprom->base;
switch (sfp_speed) {
case XGBE_SFP_SPEED_1000:
min = XGBE_SFP_BASE_BR_1GBE_MIN;
- max = XGBE_SFP_BASE_BR_1GBE_MAX;
break;
case XGBE_SFP_SPEED_10000:
min = XGBE_SFP_BASE_BR_10GBE_MIN;
- if (memcmp(&sfp_eeprom->base[XGBE_SFP_BASE_VENDOR_NAME],
- XGBE_MOLEX_VENDOR, XGBE_SFP_BASE_VENDOR_NAME_LEN) == 0)
- max = XGBE_MOLEX_SFP_BASE_BR_10GBE_MAX;
- else
- max = XGBE_SFP_BASE_BR_10GBE_MAX;
break;
default:
return false;
}
- return ((sfp_base[XGBE_SFP_BASE_BR] >= min) &&
- (sfp_base[XGBE_SFP_BASE_BR] <= max));
+ return sfp_base[XGBE_SFP_BASE_BR] >= min;
}
static void xgbe_phy_free_phy_device(struct xgbe_prv_data *pdata)
--
2.35.1
