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Re: [PATCH 2/5] mt76: rework dma.c to adapt mt7986 changes

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On 2022-01-11 08:51, Bo Jiao wrote:
From: Bo Jiao <Bo.Jiao@xxxxxxxxxxxx>

Check ndesc of q_rx to avoid potential hole in iteration.
This is an intermediate patch to add mt7986 support.

Signed-off-by: Sujuan Chen <sujuan.chen@xxxxxxxxxxxx>
Signed-off-by: Bo Jiao <Bo.Jiao@xxxxxxxxxxxx>
Reviewed-by: Ryder Lee <ryder.lee@xxxxxxxxxxxx>
---
  drivers/net/wireless/mediatek/mt76/dma.c | 10 ++++++----
  1 file changed, 6 insertions(+), 4 deletions(-)

diff --git a/drivers/net/wireless/mediatek/mt76/dma.c b/drivers/net/wireless/mediatek/mt76/dma.c
index fd4c51b..83f045a 100644
--- a/drivers/net/wireless/mediatek/mt76/dma.c
+++ b/drivers/net/wireless/mediatek/mt76/dma.c
@@ -660,10 +660,12 @@ mt76_dma_init(struct mt76_dev *dev,
  		 wiphy_name(dev->hw->wiphy));
  	dev->napi_dev.threaded = 1;
- mt76_for_each_q_rx(dev, i) {
-		netif_napi_add(&dev->napi_dev, &dev->napi[i], poll, 64);
-		mt76_dma_rx_fill(dev, &dev->q_rx[i]);
-		napi_enable(&dev->napi[i]);
+	for (i = 0; i < ARRAY_SIZE(dev->q_rx); i++) {
+		if (dev->q_rx[i].ndesc) {
Please fix mt76_for_each_q_rx instead. You can simply define it to

for (i = 0; i < ARRAY_SIZE((dev)->q_rx); i++)		\
	if ((dev)->q_rx[i].ndesc)

Thanks,

- Felix




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