netdev - Re: [PATCH V2 00/22] Broadcom RoCE Driver (bnxt

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Message-ID: <CACKFLinhXAeVNZNP10XfKmr3h3tLdebF06yO7wraYeLLsKBqqQ@mail.gmail.com>
Date:   Mon, 12 Dec 2016 22:41:59 -0800
From:   Michael Chan <michael.chan@...adcom.com>
To:     Selvin Xavier <selvin.xavier@...adcom.com>
Cc:     jtoppins@...hat.com, Doug Ledford <dledford@...hat.com>,
        linux-rdma@...r.kernel.org, Netdev <netdev@...r.kernel.org>
Subject: Re: [PATCH V2 00/22] Broadcom RoCE Driver (bnxt_re)

On Mon, Dec 12, 2016 at 8:52 PM, Selvin Xavier
<selvin.xavier@...adcom.com> wrote:

>>   CHECK   drivers/infiniband/hw/bnxtre/bnxt_qplib_rcfw.c
>>   CHECK   drivers/infiniband/hw/bnxtre/bnxt_qplib_sp.c
>>   CHECK   drivers/infiniband/hw/bnxtre/bnxt_qplib_fp.c
>> drivers/infiniband/hw/bnxtre/bnxt_qplib_fp.c:1015:22: warning: context
>> imbalance in 'bnxt_qplib_lock_cqs' - wrong count at exit
>> drivers/infiniband/hw/bnxtre/bnxt_qplib_fp.c:1030:28: warning: context
>> imbalance in 'bnxt_qplib_unlock_cqs' - unexpected unlock
> The above two are false positives, since locking and unlocking are
> handled in two separate functions. This is a wrapper to lock/unlock
> both SQ and RQ CQ locks. Functionally it is ok  since
> bnxt_qplib_unlock_cqs is called just after the critical section and
> both locks are freed in order. I think we can ignore this warning.
>
>
You can use __releases() and __acquires() macros to denote these cases
for sparse.