linux-kernel - Re: [PATCH 08/12] i2c: tegra: use core to detect 'no zero length' quirk

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Message-ID: <8eb3d00b-0275-30ec-ef44-5e859dd9242f@nvidia.com>
Date:   Fri, 5 Oct 2018 14:52:05 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Wolfram Sang <wsa+renesas@...g-engineering.com>,
        <linux-i2c@...r.kernel.org>
CC:     <linux-renesas-soc@...r.kernel.org>,
        Laxman Dewangan <ldewangan@...dia.com>,
        Thierry Reding <thierry.reding@...il.com>,
        <linux-tegra@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 08/12] i2c: tegra: use core to detect 'no zero length'
 quirk


On 23/07/18 21:26, Wolfram Sang wrote:
> And don't reimplement in the driver.
> 
> Signed-off-by: Wolfram Sang <wsa+renesas@...g-engineering.com>
> ---
> 
> Only build tested.
> 
>  drivers/i2c/busses/i2c-tegra.c | 4 +---
>  1 file changed, 1 insertion(+), 3 deletions(-)
> 
> diff --git a/drivers/i2c/busses/i2c-tegra.c b/drivers/i2c/busses/i2c-tegra.c
> index 60c8561fbe65..437294ea2f0a 100644
> --- a/drivers/i2c/busses/i2c-tegra.c
> +++ b/drivers/i2c/busses/i2c-tegra.c
> @@ -684,9 +684,6 @@ static int tegra_i2c_xfer_msg(struct tegra_i2c_dev *i2c_dev,
>  
>  	tegra_i2c_flush_fifos(i2c_dev);
>  
> -	if (msg->len == 0)
> -		return -EINVAL;
> -
>  	i2c_dev->msg_buf = msg->buf;
>  	i2c_dev->msg_buf_remaining = msg->len;
>  	i2c_dev->msg_err = I2C_ERR_NONE;
> @@ -831,6 +828,7 @@ static const struct i2c_algorithm tegra_i2c_algo = {
>  
>  /* payload size is only 12 bit */
>  static const struct i2c_adapter_quirks tegra_i2c_quirks = {
> +	.flags = I2C_AQ_NO_ZERO_LEN,
>  	.max_read_len = 4096,
>  	.max_write_len = 4096,
>  };

Sorry for missing this, but looks fine to me, so ...

Acked-by: Jon Hunter <jonathanh@...dia.com>

Cheers
Jon

-- 
nvpublic