6.6-stable review patch. If anyone has any objections, please let me know.
------------------
From: Rodrigo Cataldo <rodrigo.cadore@xxxxxxxxxxxxxxx>
[ Upstream commit 947dfc8138dfaeb6e966e2d661de89eb203e3064 ]
According to the Intel Software Manual for I225, Section 7.5.2.7,
hicredit should be multiplied by the constant link-rate value, 0x7736.
Currently, the old constant link-rate value, 0x7735, from the boards
supported on igb are being used, most likely due to a copy'n'paste, as
the rest of the logic is the same for both drivers.
Update hicredit accordingly.
Fixes: 1ab011b0bf07 ("igc: Add support for CBS offloading")
Reviewed-by: Kurt Kanzenbach <kurt@xxxxxxxxxxxxx>
Signed-off-by: Rodrigo Cataldo <rodrigo.cadore@xxxxxxxxxxxxxxx>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@xxxxxxxxx>
Tested-by: Naama Meir <naamax.meir@xxxxxxxxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/intel/igc/igc_tsn.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/intel/igc/igc_tsn.c b/drivers/net/ethernet/intel/igc/igc_tsn.c
index a9c08321aca90..22cefb1eeedfa 100644
--- a/drivers/net/ethernet/intel/igc/igc_tsn.c
+++ b/drivers/net/ethernet/intel/igc/igc_tsn.c
@@ -227,7 +227,7 @@ static int igc_tsn_enable_offload(struct igc_adapter *adapter)
wr32(IGC_TQAVCC(i), tqavcc);
wr32(IGC_TQAVHC(i),
- 0x80000000 + ring->hicredit * 0x7735);
+ 0x80000000 + ring->hicredit * 0x7736);
} else {
/* Disable any CBS for the queue */
txqctl &= ~(IGC_TXQCTL_QAV_SEL_MASK);
--
2.43.0
