This is a note to let you know that I've just added the patch titled
igc: Fix typo in i225 LTR functions
to the 5.10-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
igc-fix-typo-in-i225-ltr-functions.patch
and it can be found in the queue-5.10 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit 89266a7b4a871ee9440451ba963d18f7213de9d6
Author: Sasha Neftin <sasha.neftin@xxxxxxxxx>
Date: Tue Nov 2 09:20:06 2021 +0200
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@xxxxxxxxx>
Signed-off-by: Sasha Neftin <sasha.neftin@xxxxxxxxx>
Tested-by: Nechama Kraus <nechamax.kraus@xxxxxxxxxxxxxxx>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@xxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/net/ethernet/intel/igc/igc_i225.c b/drivers/net/ethernet/intel/igc/igc_i225.c
index 7ec04e48860c6..553d6bc78e6bd 100644
--- 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);
}
}
