This is a note to let you know that I've just added the patch titled
cxgb4: fix incorrect cim_la output for T6
to the 4.4-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:
cxgb4-fix-incorrect-cim_la-output-for-t6.patch
and it can be found in the queue-4.4 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
>From foo@baz Tue Apr 10 10:31:53 CEST 2018
From: Ganesh Goudar <ganeshgr@xxxxxxxxxxx>
Date: Wed, 31 May 2017 19:10:21 +0530
Subject: cxgb4: fix incorrect cim_la output for T6
From: Ganesh Goudar <ganeshgr@xxxxxxxxxxx>
[ Upstream commit a97051f4553551d13e586ab3cb6ae13093a44a81 ]
take care of UpDbgLaRdPtr[0-3] restriction for T6.
Signed-off-by: Ganesh Goudar <ganeshgr@xxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Sasha Levin <alexander.levin@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
drivers/net/ethernet/chelsio/cxgb4/t4_hw.c | 11 ++++++++++-
1 file changed, 10 insertions(+), 1 deletion(-)
--- a/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
+++ b/drivers/net/ethernet/chelsio/cxgb4/t4_hw.c
@@ -7711,7 +7711,16 @@ int t4_cim_read_la(struct adapter *adap,
ret = t4_cim_read(adap, UP_UP_DBG_LA_DATA_A, 1, &la_buf[i]);
if (ret)
break;
- idx = (idx + 1) & UPDBGLARDPTR_M;
+
+ /* Bits 0-3 of UpDbgLaRdPtr can be between 0000 to 1001 to
+ * identify the 32-bit portion of the full 312-bit data
+ */
+ if (is_t6(adap->params.chip) && (idx & 0xf) >= 9)
+ idx = (idx & 0xff0) + 0x10;
+ else
+ idx++;
+ /* address can't exceed 0xfff */
+ idx &= UPDBGLARDPTR_M;
}
restart:
if (cfg & UPDBGLAEN_F) {
Patches currently in stable-queue which might be from ganeshgr@xxxxxxxxxxx are
queue-4.4/cxgb4-fw-upgrade-fixes.patch
queue-4.4/cxgb4-fix-incorrect-cim_la-output-for-t6.patch
queue-4.4/cxgb4vf-fix-sge-fl-buffer-initialization-logic-for-64k-pages.patch