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SubjectRe: [PATCH] RDMA/hns: ensure for-loop actually iterates and free's buffers
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On 2018/3/26 23:10, Colin King wrote:
> From: Colin Ian King <colin.king@canonical.com>
>
> The current for-loop zeros variable i and only loops once, hence
> not all the buffers are free'd. Fix this by setting i correctly.

Hi Colin,

Thank you very much for this patch! It's a typo when I prepared the patch set.

Reviewed-by: Yixian Liu <liuyixian@huawei.com>

>
> Detected by CoverityScan, CID#1463415 ("Operands don't affect result")
>
> Fixes: a5073d6054f7 ("RDMA/hns: Add eq support of hip08")
> Signed-off-by: Colin Ian King <colin.king@canonical.com>
> ---
> drivers/infiniband/hw/hns/hns_roce_hw_v2.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
> index 684c2d1a0ed0..8b84ab7800d8 100644
> --- a/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
> +++ b/drivers/infiniband/hw/hns/hns_roce_hw_v2.c
> @@ -4391,7 +4391,7 @@ static int hns_roce_mhop_alloc_eq(struct hns_roce_dev *hr_dev,
> eq->l0_dma = 0;
>
> if (mhop_num == 1)
> - for (i -= i; i >= 0; i--)
> + for (i -= 1; i >= 0; i--)
> dma_free_coherent(dev, buf_chk_sz, eq->buf[i],
> eq->buf_dma[i]);
> else if (mhop_num == 2) {
>

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