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| author | Liming Sun <[email protected]> | 2021-05-08 00:30:12 +0000 |
|---|---|---|
| committer | Hans de Goede <[email protected]> | 2021-05-19 13:24:52 +0000 |
| commit | 1c0e5701c5e792c090aef0e5b9b8923c334d9324 (patch) | |
| tree | da8834c666b89c3898ced373638c25a2dcbf9e4c /net/unix/af_unix.c | |
| parent | platform/surface: dtx: Fix poll function (diff) | |
| download | kernel-1c0e5701c5e792c090aef0e5b9b8923c334d9324.tar.gz kernel-1c0e5701c5e792c090aef0e5b9b8923c334d9324.zip | |
platform/mellanox: mlxbf-tmfifo: Fix a memory barrier issue
The virtio framework uses wmb() when updating avail->idx. It
guarantees the write order, but not necessarily loading order
for the code accessing the memory. This commit adds a load barrier
after reading the avail->idx to make sure all the data in the
descriptor is visible. It also adds a barrier when returning the
packet to virtio framework to make sure read/writes are visible to
the virtio code.
Fixes: 1357dfd7261f ("platform/mellanox: Add TmFifo driver for Mellanox BlueField Soc")
Signed-off-by: Liming Sun <[email protected]>
Reviewed-by: Vadim Pasternak <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Hans de Goede <[email protected]>
Diffstat (limited to 'net/unix/af_unix.c')
0 files changed, 0 insertions, 0 deletions