linux-kernel - Re: [PATCH] cxgb4: Use proper enum in IEEE_FAUX

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Date:   Tue, 02 Oct 2018 22:31:42 -0700 (PDT)
From:   David Miller <davem@...emloft.net>
To:     natechancellor@...il.com
Cc:     ganeshgr@...lsio.com, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org, ndesaulniers@...gle.com
Subject: Re: [PATCH] cxgb4: Use proper enum in IEEE_FAUX_SYNC

From: Nathan Chancellor <natechancellor@...il.com>
Date: Sun, 30 Sep 2018 20:47:38 -0700

> Clang warns when one enumerated type is implicitly converted to another.
> 
> drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.c:390:4: warning: implicit
> conversion from enumeration type 'enum cxgb4_dcb_state' to different
> enumeration type 'enum cxgb4_dcb_state_input' [-Wenum-conversion]
>                         IEEE_FAUX_SYNC(dev, dcb);
>                         ^~~~~~~~~~~~~~~~~~~~~~~~
> drivers/net/ethernet/chelsio/cxgb4/cxgb4_dcb.h:70:10: note: expanded
> from macro 'IEEE_FAUX_SYNC'
>                                             CXGB4_DCB_STATE_FW_ALLSYNCED);
>                                             ^~~~~~~~~~~~~~~~~~~~~~~~~~~~
> 
> Use the equivalent value of the expected type to silence Clang while
> resulting in no functional change.
> 
> CXGB4_DCB_STATE_FW_ALLSYNCED = CXGB4_DCB_INPUT_FW_ALLSYNCED = 3
> 
> Signed-off-by: Nathan Chancellor <natechancellor@...il.com>

Applied to net-next.