Re: [PATCH V2 for-next] RDMA/hns: Bugfix for posting multiple srq work request

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On Thu, May 30, 2019 at 11:55:53PM +0800, Lijun Ou wrote:
> When the user submits more than 32 work request to a srq queue
> at a time, it needs to find the corresponding number of entries
> in the bitmap in the idx queue. However, the original lookup
> function named ffs only processes 32 bits of the array element,
> When the number of srq wqe issued exceeds 32, the ffs will only
> process the lower 32 bits of the elements, it will not be able
> to get the correct wqe index for srq wqe.
> 
> Signed-off-by: Xi Wang <wangxi11@xxxxxxxxxx>
> Signed-off-by: Lijun Ou <oulijun@xxxxxxxxxx>
> ---
> V1->V2:
> 1. Use bitmap function instead of __ffs64()
> ---
>  drivers/infiniband/hw/hns/hns_roce_device.h |  2 +-
>  drivers/infiniband/hw/hns/hns_roce_hw_v2.c  | 29 +++++++++++++----------------
>  drivers/infiniband/hw/hns/hns_roce_srq.c    | 15 +++------------
>  3 files changed, 17 insertions(+), 29 deletions(-)

Applied to for-next, thanks

Jason



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