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mt76: set txwi_size according to the driver value

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Dynamically allocate txwi since new chipsets will use longer txwi
descriptors

Signed-off-by: Lorenzo Bianconi <[email protected]>
This commit is contained in:
Lorenzo Bianconi
2019-04-25 12:04:34 +02:00
committed by Felix Fietkau
parent 49d9c1b29f
commit 3e371ca35c
5 changed files with 22 additions and 13 deletions
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tx.c
+7 -5
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@@ -21,15 +21,17 @@ mt76_alloc_txwi(struct mt76_dev *dev)
{
struct mt76_txwi_cache *t;
dma_addr_t addr;
u8 *txwi;
int size;
size = (sizeof(*t) + L1_CACHE_BYTES - 1) & ~(L1_CACHE_BYTES - 1);
t = devm_kzalloc(dev->dev, size, GFP_ATOMIC);
if (!t)
size = L1_CACHE_ALIGN(dev->drv->txwi_size + sizeof(*t));
txwi = devm_kzalloc(dev->dev, size, GFP_ATOMIC);
if (!txwi)
return NULL;
addr = dma_map_single(dev->dev, &t->txwi, sizeof(t->txwi),
addr = dma_map_single(dev->dev, txwi, dev->drv->txwi_size,
DMA_TO_DEVICE);
t = (struct mt76_txwi_cache *)(txwi + dev->drv->txwi_size);
t->dma_addr = addr;
return t;
@@ -78,7 +80,7 @@ void mt76_tx_free(struct mt76_dev *dev)
struct mt76_txwi_cache *t;
while ((t = __mt76_get_txwi(dev)) != NULL)
dma_unmap_single(dev->dev, t->dma_addr, sizeof(t->txwi),
dma_unmap_single(dev->dev, t->dma_addr, dev->drv->txwi_size,
DMA_TO_DEVICE);
}