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| author | Lorenzo Bianconi <lorenzo@kernel.org> | 2019-10-27 20:53:09 +0100 |
|---|---|---|
| committer | Kalle Valo <kvalo@codeaurora.org> | 2019-10-30 16:59:48 +0200 |
| commit | 7bd0650be63cbb9e45e394d689c81365fe48e495 (patch) | |
| tree | 500f4aa1ddf7c9801fee497fa713300d5f541be8 /drivers/net/wireless/mediatek/mt76/mt76.h | |
| parent | f37f05503575c59020dacd36e999f4e8b3dbc115 (diff) | |
| download | lwn-7bd0650be63cbb9e45e394d689c81365fe48e495.tar.gz lwn-7bd0650be63cbb9e45e394d689c81365fe48e495.zip | |
mt76: dma: fix buffer unmap with non-linear skbs
mt76 dma layer is supposed to unmap skb data buffers while keep txwi
mapped on hw dma ring. At the moment mt76 wrongly unmap txwi or does
not unmap data fragments in even positions for non-linear skbs. This
issue may result in hw hangs with A-MSDU if the system relies on IOMMU
or SWIOTLB. Fix this behaviour properly unmapping data fragments on
non-linear skbs.
Fixes: 17f1de56df05 ("mt76: add common code shared between multiple chipsets")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Diffstat (limited to 'drivers/net/wireless/mediatek/mt76/mt76.h')
| -rw-r--r-- | drivers/net/wireless/mediatek/mt76/mt76.h | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/net/wireless/mediatek/mt76/mt76.h b/drivers/net/wireless/mediatek/mt76/mt76.h index dc468ed9434a..8aec7ccf2d79 100644 --- a/drivers/net/wireless/mediatek/mt76/mt76.h +++ b/drivers/net/wireless/mediatek/mt76/mt76.h @@ -93,8 +93,9 @@ struct mt76_queue_entry { struct urb *urb; }; enum mt76_txq_id qid; - bool schedule; - bool done; + bool skip_buf0:1; + bool schedule:1; + bool done:1; }; struct mt76_queue_regs { |