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Nickolay Savchenko
7c2586ffe7
fe_txd_unmap() uses dma_len0 and dma_len1 to decide whether each TX mapping must be passed to dma_unmap_page(). After unmapping, however, the code passed the dma_addr0 and dma_addr1 field identifiers to dma_unmap_len_set(). This leaves the actual length fields unchanged. A reused descriptor slot can therefore retain a non-zero length and attempt to unmap an old DMA mapping again. Clear dma_len0 and dma_len1 after the mappings have been released. Signed-off-by: Nickolay Savchenko <n.savchenko@axioma.lv> Link: https://github.com/openwrt/openwrt/pull/24268 Signed-off-by: Jonas Jelonek <jelonek.jonas@gmail.com>