[PATCH 15/24] net/axgbe: check only the minimum speed for cables

[Venkat Kumar Ande]

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.

Signed-off-by: Venkat Kumar Ande <venkatkumar.a...@amd.com>
---
 drivers/net/axgbe/axgbe_phy_impl.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/drivers/net/axgbe/axgbe_phy_impl.c 
b/drivers/net/axgbe/axgbe_phy_impl.c
index 693590da53..67a18e7c55 100644
--- a/drivers/net/axgbe/axgbe_phy_impl.c
+++ b/drivers/net/axgbe/axgbe_phy_impl.c
@@ -117,9 +117,7 @@ enum axgbe_sfp_speed {
 
 #define AXGBE_SFP_BASE_BR                      12
 #define AXGBE_SFP_BASE_BR_1GBE_MIN             0x0a
-#define AXGBE_SFP_BASE_BR_1GBE_MAX             0x0d
 #define AXGBE_SFP_BASE_BR_10GBE_MIN            0x64
-#define AXGBE_SFP_BASE_BR_10GBE_MAX            0x68
 
 #define AXGBE_SFP_BASE_CU_CABLE_LEN            18
 
@@ -519,25 +517,22 @@ static void axgbe_phy_sfp_phy_settings(struct axgbe_port 
*pdata)
 static bool axgbe_phy_sfp_bit_rate(struct axgbe_sfp_eeprom *sfp_eeprom,
                                   enum axgbe_sfp_speed sfp_speed)
 {
-       u8 *sfp_base, min, max;
+       u8 *sfp_base, min;
 
        sfp_base = sfp_eeprom->base;
 
        switch (sfp_speed) {
        case AXGBE_SFP_SPEED_1000:
                min = AXGBE_SFP_BASE_BR_1GBE_MIN;
-               max = AXGBE_SFP_BASE_BR_1GBE_MAX;
                break;
        case AXGBE_SFP_SPEED_10000:
                min = AXGBE_SFP_BASE_BR_10GBE_MIN;
-               max = AXGBE_SFP_BASE_BR_10GBE_MAX;
                break;
        default:
                return false;
        }
 
-       return ((sfp_base[AXGBE_SFP_BASE_BR] >= min) &&
-               (sfp_base[AXGBE_SFP_BASE_BR] <= max));
+       return sfp_base[AXGBE_SFP_BASE_BR] >= min;
 }
 
 static void axgbe_phy_sfp_external_phy(struct axgbe_port *pdata)
-- 
2.34.1