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| author | Shenwei Wang <shenwei.wang@nxp.com> | 2024-01-23 19:51:41 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-23 10:24:51 +0300 |
| commit | d3d6162eb1e5bb53b79bd81e8c1cf566b254de52 (patch) | |
| tree | 9bd15dabd39c051ab0aefdce5b3e9fa590c3df2f /fs | |
| parent | 3422bfda92034d1b7f2234ac7665d0971227e0d1 (diff) | |
| download | linux-d3d6162eb1e5bb53b79bd81e8c1cf566b254de52.tar.xz | |
net: fec: fix the unhandled context fault from smmu
[ Upstream commit 5e344807735023cd3a67c37a1852b849caa42620 ]
When repeatedly changing the interface link speed using the command below:
ethtool -s eth0 speed 100 duplex full
ethtool -s eth0 speed 1000 duplex full
The following errors may sometimes be reported by the ARM SMMU driver:
[ 5395.035364] fec 5b040000.ethernet eth0: Link is Down
[ 5395.039255] arm-smmu 51400000.iommu: Unhandled context fault:
fsr=0x402, iova=0x00000000, fsynr=0x100001, cbfrsynra=0x852, cb=2
[ 5398.108460] fec 5b040000.ethernet eth0: Link is Up - 100Mbps/Full -
flow control off
It is identified that the FEC driver does not properly stop the TX queue
during the link speed transitions, and this results in the invalid virtual
I/O address translations from the SMMU and causes the context faults.
Fixes: dbc64a8ea231 ("net: fec: move calls to quiesce/resume packet processing out of fec_restart()")
Signed-off-by: Shenwei Wang <shenwei.wang@nxp.com>
Link: https://lore.kernel.org/r/20240123165141.2008104-1-shenwei.wang@nxp.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'fs')
0 files changed, 0 insertions, 0 deletions