diff options
| author | Doug Berger <opendmb@gmail.com> | 2024-05-15 10:02:27 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-05-17 11:56:25 +0200 |
| commit | 8064a711c4865b69cd47e88f3166ae46c9bcb887 (patch) | |
| tree | 4eaaee8d83571f9eb66dd40ed2a84f6a164d42de /lib/mpi/mpi-mul.c | |
| parent | 9ed299be99989db32950ca414ce67bf618c7f726 (diff) | |
net: bcmgenet: synchronize UMAC_CMD access
commit 0d5e2a82232605b337972fb2c7d0cbc46898aca1 upstream
The UMAC_CMD register is written from different execution
contexts and has insufficient synchronization protections to
prevent possible corruption. Of particular concern are the
acceses from the phy_device delayed work context used by the
adjust_link call and the BH context that may be used by the
ndo_set_rx_mode call.
A spinlock is added to the driver to protect contended register
accesses (i.e. reg_lock) and it is used to synchronize accesses
to UMAC_CMD.
Fixes: 1c1008c793fa ("net: bcmgenet: add main driver file")
Cc: stable@vger.kernel.org
Signed-off-by: Doug Berger <opendmb@gmail.com>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/mpi/mpi-mul.c')
0 files changed, 0 insertions, 0 deletions