5.15-stable review patch. If anyone has any objections, please let me know.
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From: Rodrigo Cataldo rodrigo.cadore@l-acoustics.com
[ 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@linutronix.de Signed-off-by: Rodrigo Cataldo rodrigo.cadore@l-acoustics.com Acked-by: Vinicius Costa Gomes vinicius.gomes@intel.com Tested-by: Naama Meir naamax.meir@linux.intel.com Signed-off-by: Tony Nguyen anthony.l.nguyen@intel.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 356c7455c5cee..2330b1ff915e7 100644 --- a/drivers/net/ethernet/intel/igc/igc_tsn.c +++ b/drivers/net/ethernet/intel/igc/igc_tsn.c @@ -185,7 +185,7 @@ 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);