Zhengchao Shao <shaozhengchao@xxxxxxxxxx> wrote:
> After the DMA buffer is mapped to a physical address, address is stored
> in pktids in brcmf_msgbuf_alloc_pktid(). Then, pktids is parsed in
> brcmf_msgbuf_get_pktid()/brcmf_msgbuf_release_array() to obtain physaddr
> and later unmap the DMA buffer. But when count is always equal to
> pktids->array_size, physaddr isn't stored in pktids and the DMA buffer
> will not be unmapped anyway.
>
> Fixes: 9a1bb60250d2 ("brcmfmac: Adding msgbuf protocol.")
> Signed-off-by: Zhengchao Shao <shaozhengchao@xxxxxxxxxx>
> Reviewed-by: Sebastian Andrzej Siewior <bigeasy@xxxxxxxxxxxxx>
Patch applied to wireless-next.git, thanks.
b9f420032f2b wifi: brcmfmac: unmap dma buffer in brcmf_msgbuf_alloc_pktid()
--
https://patchwork.kernel.org/project/linux-wireless/patch/20221207013114.1748936-1-shaozhengchao@xxxxxxxxxx/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches
