OSDN Git Service
(root)
/
uclinux-h8
/
linux.git
/ commitdiff
commit
grep
author
committer
pickaxe
?
search:
re
summary
|
shortlog
|
log
|
commit
| commitdiff |
tree
raw
|
patch
| inline |
side by side
(parent:
3e38482
)
mt76: fix rx dma ring descriptor state on reset
author
Felix Fietkau
<nbd@nbd.name>
Thu, 5 Dec 2019 16:32:41 +0000
(17:32 +0100)
committer
Felix Fietkau
<nbd@nbd.name>
Fri, 14 Feb 2020 09:06:00 +0000
(10:06 +0100)
To avoid having the hardware potentially write to memory behind stale
descriptors, set the dma-done flag on all of them before cleaning up
allocated rx buffers
Signed-off-by: Felix Fietkau <nbd@nbd.name>
drivers/net/wireless/mediatek/mt76/dma.c
patch
|
blob
|
history
diff --git
a/drivers/net/wireless/mediatek/mt76/dma.c
b/drivers/net/wireless/mediatek/mt76/dma.c
index
f88d017
..
2298a4e
100644
(file)
--- a/
drivers/net/wireless/mediatek/mt76/dma.c
+++ b/
drivers/net/wireless/mediatek/mt76/dma.c
@@
-437,7
+437,7
@@
mt76_dma_rx_reset(struct mt76_dev *dev, enum mt76_rxq_id qid)
int i;
for (i = 0; i < q->ndesc; i++)
- q->desc[i].ctrl
&= ~
cpu_to_le32(MT_DMA_CTL_DMA_DONE);
+ q->desc[i].ctrl
=
cpu_to_le32(MT_DMA_CTL_DMA_DONE);
mt76_dma_rx_cleanup(dev, q);
mt76_dma_sync_idx(dev, q);