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wifi: mt76: add DMA mapping error check in mt76_alloc_txwi()

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Add 'dma_mapping_error()' check in 'mt76_alloc_txwi()'.

Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
This commit is contained in:
Dmitry Antipov 2023-09-01 11:19:04 +03:00 committed by Felix Fietkau
parent 832f426997
commit 5d0e7dde4a
1 changed files with 5 additions and 0 deletions
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5
drivers/net/wireless/mediatek/mt76/dma.c
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@ -53,6 +53,11 @@ mt76_alloc_txwi(struct mt76_dev *dev)
addr = dma_map_single(dev->dma_dev, txwi, dev->drv->txwi_size,
DMA_TO_DEVICE);
if (unlikely(dma_mapping_error(dev->dma_dev, addr))) {
kfree(txwi);
return NULL;
}
t = (struct mt76_txwi_cache *)(txwi + dev->drv->txwi_size);
t->dma_addr = addr;