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dma/hisilicon: fix index returned when no DMA completed

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If no DMA request is completed, the ring_idx of the last completed
operation need returned by last_idx parameter. This patch fixes it.

Fixes: 2db4f0b823 ("dma/hisilicon: add data path")
Cc: stable@dpdk.org

Signed-off-by: Chengwen Feng <fengchengwen@huawei.com>
This commit is contained in:
Chengwen Feng 2022-05-27 11:40:52 +08:00 committed by Thomas Monjalon
parent bebbf07219
commit 2301dee970
1 changed files with 4 additions and 4 deletions
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8
drivers/dma/hisilicon/hisi_dmadev.c
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@ -702,12 +702,12 @@ hisi_dma_completed(void *dev_private,
}
sq_head = (sq_head + 1) & hw->sq_depth_mask;
}
*last_idx = hw->cridx + i - 1;
if (i > 0) {
hw->cridx += i;
*last_idx = hw->cridx - 1;
hw->sq_head = sq_head;
hw->completed += i;
}
hw->completed += i;
return i;
}
@ -761,12 +761,12 @@ hisi_dma_completed_status(void *dev_private,
hw->status[sq_head] = HISI_DMA_STATUS_SUCCESS;
sq_head = (sq_head + 1) & hw->sq_depth_mask;
}
*last_idx = hw->cridx + cpl_num - 1;
if (likely(cpl_num > 0)) {
hw->cridx += cpl_num;
*last_idx = hw->cridx - 1;
hw->sq_head = sq_head;
hw->completed += cpl_num;
}
hw->completed += cpl_num;
return cpl_num;
}