linux-kernel - Re: [PATCH 22/25] pinctrl: tegra: pinctrl-tegra194: Do not initialise field twice

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Date:   Tue, 14 Jul 2020 17:49:14 +0200
From:   Thierry Reding <thierry.reding@...il.com>
To:     Lee Jones <lee.jones@...aro.org>
Cc:     linus.walleij@...aro.org, linux-kernel@...r.kernel.org,
        linux-gpio@...r.kernel.org, Jonathan Hunter <jonathanh@...dia.com>,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH 22/25] pinctrl: tegra: pinctrl-tegra194: Do not
 initialise field twice

On Mon, Jul 13, 2020 at 03:49:27PM +0100, Lee Jones wrote:
> Both PIN_PINGROUP_ENTRY_Y() and DRV_PINGROUP_ENTRY_Y() macros are
> called for each of the 2 pin groups defined here, and both of them
> initialise 'drv_reg', causing the compiler to complain.
> 
> Only initialise 'drv_reg' once.
> 
> Fixes the following W=1 kernel build warning(s):
> 
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:71:14: warning: initialized field overwritten [-Woverride-init]
>  71 | .drv_reg = ((r)), | ^
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:105:2: note: in expansion of macro ‘DRV_PINGROUP_ENTRY_Y’
>  105 | DRV_PINGROUP_ENTRY_Y(0x14004, 12, 5, 20, 5, -1, -1, -1, -1, 0)
>  | ^~~~~~~~~~~~~~~~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:124:3: note: in expansion of macro ‘drive_pex_l5_clkreq_n_pgg0’
>  124 | drive_##pg_name, | ^~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:128:2: note: in expansion of macro ‘PINGROUP’
>  128 | PINGROUP(pex_l5_clkreq_n_pgg0, PE5, RSVD1, RSVD2, RSVD3, 0x14000, 0,
>  | ^~~~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:71:14: note: (near initialization for ‘tegra194_groups[0].drv_reg’)
>  71 | .drv_reg = ((r)), | ^
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:105:2: note: in expansion of macro ‘DRV_PINGROUP_ENTRY_Y’
>  105 | DRV_PINGROUP_ENTRY_Y(0x14004, 12, 5, 20, 5, -1, -1, -1, -1, 0)
>  | ^~~~~~~~~~~~~~~~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:124:3: note: in expansion of macro ‘drive_pex_l5_clkreq_n_pgg0’
>  124 | drive_##pg_name, | ^~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:128:2: note: in expansion of macro ‘PINGROUP’
>  128 | PINGROUP(pex_l5_clkreq_n_pgg0, PE5, RSVD1, RSVD2, RSVD3, 0x14000, 0,
>  | ^~~~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:71:14: warning: initialized field overwritten [-Woverride-init]
>  71 | .drv_reg = ((r)), | ^
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:107:2: note: in expansion of macro ‘DRV_PINGROUP_ENTRY_Y’
>  107 | DRV_PINGROUP_ENTRY_Y(0x1400c, 12, 5, 20, 5, -1, -1, -1, -1, 0)
>  | ^~~~~~~~~~~~~~~~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:124:3: note: in expansion of macro ‘drive_pex_l5_rst_n_pgg1’
>  124 | drive_##pg_name, | ^~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:130:2: note: in expansion of macro ‘PINGROUP’
>  130 | PINGROUP(pex_l5_rst_n_pgg1, PE5, RSVD1, RSVD2, RSVD3, 0x14008, 0,
>  | ^~~~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:71:14: note: (near initialization for ‘tegra194_groups[1].drv_reg’)
>  71 | .drv_reg = ((r)), | ^
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:107:2: note: in expansion of macro ‘DRV_PINGROUP_ENTRY_Y’
>  107 | DRV_PINGROUP_ENTRY_Y(0x1400c, 12, 5, 20, 5, -1, -1, -1, -1, 0)
>  | ^~~~~~~~~~~~~~~~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:124:3: note: in expansion of macro ‘drive_pex_l5_rst_n_pgg1’
>  124 | drive_##pg_name, | ^~~~~~
>  drivers/pinctrl/tegra/pinctrl-tegra194.c:130:2: note: in expansion of macro ‘PINGROUP’
>  130 | PINGROUP(pex_l5_rst_n_pgg1, PE5, RSVD1, RSVD2, RSVD3, 0x14008, 0,
>  | ^~~~~~~~
> 
> Cc: Thierry Reding <thierry.reding@...il.com>
> Cc: Jonathan Hunter <jonathanh@...dia.com>
> Cc: linux-tegra@...r.kernel.org
> Signed-off-by: Lee Jones <lee.jones@...aro.org>
> ---
>  drivers/pinctrl/tegra/pinctrl-tegra194.c | 1 -
>  1 file changed, 1 deletion(-)

Indeed, looks correct to me:

Acked-by: Thierry Reding <treding@...dia.com>

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