netdev - Re: [PATCH net-next 3/5] net: ipa: have gsi_channel

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Date:   Wed, 20 Jan 2021 21:35:22 -0800
From:   Jakub Kicinski <kuba@...nel.org>
To:     Alex Elder <elder@...aro.org>
Cc:     davem@...emloft.net, elder@...nel.org, evgreen@...omium.org,
        bjorn.andersson@...aro.org, cpratapa@...eaurora.org,
        subashab@...eaurora.org, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH net-next 3/5] net: ipa: have gsi_channel_update() return
 a value

On Wed, 20 Jan 2021 16:03:59 -0600 Alex Elder wrote:
> Have gsi_channel_update() return the first transaction in the
> updated completed transaction list, or NULL if no new transactions
> have been added.
> 
> Signed-off-by: Alex Elder <elder@...aro.org>

> @@ -1452,7 +1452,7 @@ void gsi_channel_doorbell(struct gsi_channel *channel)
>  }
>  
>  /* Consult hardware, move any newly completed transactions to completed list */
> -static void gsi_channel_update(struct gsi_channel *channel)
> +struct gsi_trans *gsi_channel_update(struct gsi_channel *channel)

Why did it lose the 'static'?

drivers/net/ipa/gsi.c:1455:19: warning: no previous prototype for ‘gsi_channel_update’ [-Wmissing-prototypes]
 1455 | struct gsi_trans *gsi_channel_update(struct gsi_channel *channel)
      |                   ^~~~~~~~~~~~~~~~~~