diff mbox series

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

Message ID 20240412125249.10625-15-VenkatKumar.Ande@amd.com (mailing list archive)
State Changes Requested
Delegated to: Ferruh Yigit
Headers
Series [01/24] net/axgbe: remove use of comm_owned field |

Checks

Context Check Description
ci/checkpatch success coding style OK

Commit Message

Venkat Kumar Ande April 12, 2024, 12:52 p.m. UTC 
  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.Ande@amd.com>
---
 drivers/net/axgbe/axgbe_phy_impl.c | 9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)
diff mbox series

Patch

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)