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mt76: dma: use kzalloc instead of devm_kzalloc for txwi

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dma unmap is already needed for cleanup anyway, so we don't need the extra
tracking and can save a bit of memory here

Signed-off-by: Felix Fietkau <[email protected]>
This commit is contained in:
Felix Fietkau
2022-03-19 23:10:29 +01:00
parent a7805e4e1d
commit 0b1deb9292
1 changed files with 4 additions and 2 deletions
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dma.c
+4 -2
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@@ -16,7 +16,7 @@ mt76_alloc_txwi(struct mt76_dev *dev)
int size;
size = L1_CACHE_ALIGN(dev->drv->txwi_size + sizeof(*t));
txwi = devm_kzalloc(dev->dev, size, GFP_ATOMIC);
txwi = kzalloc(size, GFP_ATOMIC);
if (!txwi)
return NULL;
@@ -73,9 +73,11 @@ mt76_free_pending_txwi(struct mt76_dev *dev)
struct mt76_txwi_cache *t;
local_bh_disable();
while ((t = __mt76_get_txwi(dev)) != NULL)
while ((t = __mt76_get_txwi(dev)) != NULL) {
dma_unmap_single(dev->dev, t->dma_addr, dev->drv->txwi_size,
DMA_TO_DEVICE);
kfree(mt76_get_txwi_ptr(dev, t));
}
local_bh_enable();
}