diff options
| author | Joakim Zhang <[email protected]> | 2021-02-25 17:01:14 +0800 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2021-02-26 15:17:12 -0800 |
| commit | 9c63faaa931e443e7abbbee9de0169f1d4710546 (patch) | |
| tree | 6e24b9aa7b89d32909823fab956a5208760d6f81 /scripts/gdb/linux | |
| parent | 396e13e11577b614db77db0bbb6fca935b94eb1b (diff) | |
net: stmmac: re-init rx buffers when mac resume back
During suspend/resume stress test, we found descriptor write back by DMA
could exhibit unusual behavior, e.g.:
003 [0xc4310030]: 0x0 0x40 0x0 0xb5010040
We can see that desc3 write back is 0xb5010040, it is still ownd by DMA,
so application would not recycle this buffer. It will trigger fatal bus
error when DMA try to use this descriptor again. To fix this issue, we
should re-init all rx buffers when mac resume back.
Signed-off-by: Joakim Zhang <[email protected]>
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'scripts/gdb/linux')
0 files changed, 0 insertions, 0 deletions