igc: Fix typo in i225 LTR functions

[ Upstream commit 0182d1f3fa640888a2ed7e3f6df2fdb10adee7c8 ]

The LTR maximum value was incorrectly written using the scale from
the LTR minimum value. This would cause incorrect values to be sent,
in cases where the initial calculation lead to different min/max scales.

Fixes: 707abf069548 ("igc: Add initial LTR support")
Suggested-by: Dima Ruinskiy <dima.ruinskiy@intel.com>
Signed-off-by: Sasha Neftin <sasha.neftin@intel.com>
Tested-by: Nechama Kraus <nechamax.kraus@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/net/ethernet/intel/igc/igc_i225.c b/drivers/net/ethernet/intel/igc/igc_i225.c
index b2ef9fde97b38a7def197b6b844b5e6909c54d96..b6807e16eea9393304c7abb68f90648a7bd1c968 100644 (file)
--- a/drivers/net/ethernet/intel/igc/igc_i225.c
+++ b/drivers/net/ethernet/intel/igc/igc_i225.c
@@ -636,7 +636,7 @@ s32 igc_set_ltr_i225(struct igc_hw *hw, bool link)
                ltrv = rd32(IGC_LTRMAXV);
                if (ltr_max != (ltrv & IGC_LTRMAXV_LTRV_MASK)) {
                        ltrv = IGC_LTRMAXV_LSNP_REQ | ltr_max |
-                              (scale_min << IGC_LTRMAXV_SCALE_SHIFT);
+                              (scale_max << IGC_LTRMAXV_SCALE_SHIFT);
                        wr32(IGC_LTRMAXV, ltrv);
                }
        }