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Date:   Fri, 18 Sep 2020 08:51:41 -0700
From:   Jakub Kicinski <kuba@...nel.org>
To:     Herrington <hankinsea@...il.com>
Cc:     Richard Cochran <richardcochran@...il.com>, netdev@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ptp: mark symbols static where possible

On Fri, 18 Sep 2020 14:10:13 +0800 Herrington wrote:
> We get 1 warning when building kernel with W=1:
> drivers/ptp/ptp_pch.c:182:5: warning: no previous prototype for ‘pch_ch_control_read’ [-Wmissing-prototypes]
>  u32 pch_ch_control_read(struct pci_dev *pdev)
> drivers/ptp/ptp_pch.c:193:6: warning: no previous prototype for ‘pch_ch_control_write’ [-Wmissing-prototypes]
>  void pch_ch_control_write(struct pci_dev *pdev, u32 val)
> drivers/ptp/ptp_pch.c:201:5: warning: no previous prototype for ‘pch_ch_event_read’ [-Wmissing-prototypes]
>  u32 pch_ch_event_read(struct pci_dev *pdev)
> drivers/ptp/ptp_pch.c:212:6: warning: no previous prototype for ‘pch_ch_event_write’ [-Wmissing-prototypes]
>  void pch_ch_event_write(struct pci_dev *pdev, u32 val)
> drivers/ptp/ptp_pch.c:220:5: warning: no previous prototype for ‘pch_src_uuid_lo_read’ [-Wmissing-prototypes]
>  u32 pch_src_uuid_lo_read(struct pci_dev *pdev)
> drivers/ptp/ptp_pch.c:231:5: warning: no previous prototype for ‘pch_src_uuid_hi_read’ [-Wmissing-prototypes]
>  u32 pch_src_uuid_hi_read(struct pci_dev *pdev)
> drivers/ptp/ptp_pch.c:242:5: warning: no previous prototype for ‘pch_rx_snap_read’ [-Wmissing-prototypes]
>  u64 pch_rx_snap_read(struct pci_dev *pdev)
> drivers/ptp/ptp_pch.c:259:5: warning: no previous prototype for ‘pch_tx_snap_read’ [-Wmissing-prototypes]
>  u64 pch_tx_snap_read(struct pci_dev *pdev)
> drivers/ptp/ptp_pch.c:300:5: warning: no previous prototype for ‘pch_set_station_address’ [-Wmissing-prototypes]
>  int pch_set_station_address(u8 *addr, struct pci_dev *pdev)
> 
> Signed-off-by: Herrington <hankinsea@...il.com>

The declarations are in:

drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.h

You need to split those out into a shared header and include them
appropriately.

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