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| author | Felix Fietkau <nbd@nbd.name> | 2020-03-24 11:57:43 +0100 |
|---|---|---|
| committer | Felix Fietkau <nbd@nbd.name> | 2020-09-24 18:10:16 +0200 |
| commit | 2d68104742a90f035ee8ceaddf322f6e2da32f70 (patch) | |
| tree | 79d9b7f393cf0170411273b0c64307029c7993a8 /drivers/net/wireless/mediatek/mt76/dma.c | |
| parent | c32011bbde738f36dcffbb0e3333e29f7857fd09 (diff) | |
| download | linux-stable-2d68104742a90f035ee8ceaddf322f6e2da32f70.tar.gz linux-stable-2d68104742a90f035ee8ceaddf322f6e2da32f70.tar.bz2 linux-stable-2d68104742a90f035ee8ceaddf322f6e2da32f70.zip | |
mt76: add memory barrier to DMA queue kick
Ensure that descriptor memory has been fully written before letting the
hardware read it
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/dma.c')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/dma.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c index 7545b552db25..24ff21eedbd0 100644 --- a/drivers/net/wireless/mediatek/mt76/dma.c +++ b/drivers/net/wireless/mediatek/mt76/dma.c @@ -143,6 +143,7 @@ mt76_dma_sync_idx(struct mt76_dev *dev, struct mt76_queue *q) static void mt76_dma_kick_queue(struct mt76_dev *dev, struct mt76_queue *q) { + wmb(); writel(q->head, &q->regs->cpu_idx); } |