diff options
| author | Florian Fainelli <florian.fainelli@broadcom.com> | 2026-09-21 15:00:21 -0700 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-09-23 19:07:06 -0700 |
| commit | d64e277b955be4506931802837499b62c8f3968a (patch) | |
| tree | 918190b98a00d7adc7f14411e530a731d280c8c7 /tools/perf/scripts/python/stackcollapse.py | |
| parent | 273941c85fc2632cd3e56ddff737b9245de7697d (diff) | |
net: bcmgenet: mask DMA_TIMEOUT_MASK when reading DMA_RING0_TIMEOUT
bcmgenet_get_coalesce() reads DMA_RING0_TIMEOUT to calculate
rx_coalesce_usecs without masking out bits outside DMA_TIMEOUT_MASK
(16 bits). If upper bits are non-zero or contain status/flags, the
computed value of rx_coalesce_usecs returned to userspace via ethtool
becomes corrupted.
Mask the register read with DMA_TIMEOUT_MASK before computing the
timeout in microseconds.
Fixes: 4a29645bfe6c ("net: bcmgenet: Implement RX coalescing control knobs")
Reviewed-by: Nicolai Buchwitz <nb@tipi-net.de>
Signed-off-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://patch.msgid.link/20260921220021.281418-6-florian.fainelli@broadcom.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'tools/perf/scripts/python/stackcollapse.py')
0 files changed, 0 insertions, 0 deletions