linux-kernel - RE: [PATCH v4 2/5] da850-evm: add UI Expander pushbuttons

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Date:	Wed, 24 Nov 2010 18:46:01 +0530
From:	"Nori, Sekhar" <nsekhar@...com>
To:	Ben Gardiner <bengardiner@...ometrics.ca>,
	Kevin Hilman <khilman@...prootsystems.com>,
	"davinci-linux-open-source@...ux.davincidsp.com" 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	"linux-input@...r.kernel.org" <linux-input@...r.kernel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>
CC:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Chris Cordahi <christophercordahi@...ometrics.ca>,
	Paul Mundt <lethal@...ux-sh.org>,
	"Govindarajan, Sriramakrishnan" <srk@...com>,
	Kevin Hilman <khilman@...prootsystems.com>
Subject: RE: [PATCH v4 2/5] da850-evm: add UI Expander pushbuttons

Hi Ben,

I have some minor comments on this patch. You could
wait for other pending items to get resolved before
posting a re-spin.

On Wed, Nov 24, 2010 at 01:10:57, Ben Gardiner wrote:

>  arch/arm/mach-davinci/board-da850-evm.c |   98 ++++++++++++++++++++++++++++++-
>  1 files changed, 97 insertions(+), 1 deletions(-)
>
> diff --git a/arch/arm/mach-davinci/board-da850-evm.c b/arch/arm/mach-davinci/board-da850-evm.c

> +static struct gpio_keys_button da850_evm_ui_keys[] = {
> +     [0 ... DA850_N_UI_PB - 1] = {
> +             .type                   = EV_KEY,
> +             .active_low             = 1,
> +             .wakeup                 = 0,
> +             .debounce_interval      = DA850_KEYS_DEBOUNCE_MS,
> +             .code                   = -1, /* assigned at runtime */
> +             .gpio                   = -1, /* assigned at runtime */
> +             .desc                   = NULL, /* assigned at runtime */
> +     },
> +};
> +
> +static struct gpio_keys_platform_data da850_evm_ui_keys_pdata = {
> +     .buttons = da850_evm_ui_keys,
> +     .nbuttons = ARRAY_SIZE(da850_evm_ui_keys),
> +     .rep = 0, /* disable auto-repeat */
> +     .poll_interval = DA850_GPIO_KEYS_POLL_MS,
> +};
> +
> +static struct platform_device da850_evm_ui_keys_device = {
> +     .name = "gpio-keys",
> +     .id = 0,
> +     .dev = {
> +             .platform_data = &da850_evm_ui_keys_pdata
> +     },
> +};

No need of zero/NULL initialization in structures above
since they are static.

> @@ -304,15 +388,24 @@ static int da850_evm_ui_expander_setup(struct i2c_client *client, unsigned gpio,
>       gpio_direction_output(sel_b, 1);
>       gpio_direction_output(sel_c, 1);
>
> +     da850_evm_ui_keys_init(gpio);
> +     ret = platform_device_register(&da850_evm_ui_keys_device);
> +     if (ret) {
> +             pr_warning("Could not register UI GPIO expander push-buttons"
> +                             " device\n");

Line-breaking an error message is not preferred since it becomes
difficult to grep in code. Looking at this message, you could drop
" device" altogether.

> +             goto exp_setup_keys_fail;
> +     }
> +
>       ui_card_detected = 1;
>       pr_info("DA850/OMAP-L138 EVM UI card detected\n");
>
>       da850_evm_setup_nor_nand();
> -

Random white space change?

Thanks,
Sekhar

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