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