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Date:   Thu, 11 Jul 2019 15:05:11 -0300
From:   Jason Gunthorpe <jgg@...pe.ca>
To:     "Gustavo A. R. Silva" <gustavo@...eddedor.com>
Cc:     Bernard Metzler <bmt@...ich.ibm.com>,
        Doug Ledford <dledford@...hat.com>, linux-rdma@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RDMA/siw: Mark expected switch fall-throughs

On Thu, Jul 11, 2019 at 11:12:18AM -0500, Gustavo A. R. Silva wrote:
> In preparation to enabling -Wimplicit-fallthrough, mark switch
> cases where we are expecting to fall through.
> 
> This patch fixes the following warnings:
> 
> drivers/infiniband/sw/siw/siw_qp_rx.c: In function ‘siw_rdmap_complete’:
> drivers/infiniband/sw/siw/siw_qp_rx.c:1214:18: warning: this statement may fall through [-Wimplicit-fallthrough=]
>    wqe->rqe.flags |= SIW_WQE_SOLICITED;
>    ~~~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~
> drivers/infiniband/sw/siw/siw_qp_rx.c:1215:2: note: here
>   case RDMAP_SEND:
>   ^~~~
> 
> drivers/infiniband/sw/siw/siw_qp_tx.c: In function ‘siw_qp_sq_process’:
> drivers/infiniband/sw/siw/siw_qp_tx.c:1044:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
>     siw_wqe_put_mem(wqe, tx_type);
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/infiniband/sw/siw/siw_qp_tx.c:1045:3: note: here
>    case SIW_OP_INVAL_STAG:
>    ^~~~
> drivers/infiniband/sw/siw/siw_qp_tx.c:1128:4: warning: this statement may fall through [-Wimplicit-fallthrough=]
>     siw_wqe_put_mem(wqe, tx_type);
>     ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> drivers/infiniband/sw/siw/siw_qp_tx.c:1129:3: note: here
>    case SIW_OP_INVAL_STAG:
>    ^~~~
> 
> Warning level 3 was used: -Wimplicit-fallthrough=3
> 
> This patch is part of the ongoing efforts to enable
> -Wimplicit-fallthrough.
> 
> Signed-off-by: Gustavo A. R. Silva <gustavo@...eddedor.com>
> 
> NOTE: -Wimplicit-fallthrough will be enabled globally in v5.3. So, I
>       suggest you to take this patch for 5.3-rc1.

Okay, I queued this for the current merge window then

Jason

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