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| author | Zumeng Chen <[email protected]> | 2016-11-28 13:55:00 +0000 |
|---|---|---|
| committer | David S. Miller <[email protected]> | 2016-11-30 01:33:55 +0000 |
| commit | ffac0e967f20b7637936dbaa21df08c55f672604 (patch) | |
| tree | 0b79a616d557f4646a717cebc75911a3803670bf /lib/debugobjects.c | |
| parent | net: macb: fix the RX queue reset in macb_rx() (diff) | |
| download | kernel-ffac0e967f20b7637936dbaa21df08c55f672604.tar.gz kernel-ffac0e967f20b7637936dbaa21df08c55f672604.zip | |
net: macb: ensure ordering write to re-enable RX smoothly
When a hardware issue happened as described by inline comments, the register
write pattern looks like the following:
<write ~MACB_BIT(RE)>
+ wmb();
<write MACB_BIT(RE)>
There might be a memory barrier between these two write operations, so add wmb
to ensure an flip from 0 to 1 for NCR.
Signed-off-by: Zumeng Chen <[email protected]>
Acked-by: Nicolas Ferre <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
Diffstat (limited to 'lib/debugobjects.c')
0 files changed, 0 insertions, 0 deletions