linux-kernel - Re: [PATCH V14 3/5] i2c: tegra: Add DMA support

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Message-ID: <59f39ee7-c7da-52ea-cc67-52c5af879c35@gmail.com>
Date:   Thu, 7 Feb 2019 23:46:17 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Sowjanya Komatineni <skomatineni@...dia.com>,
        thierry.reding@...il.com, jonathanh@...dia.com,
        mkarthik@...dia.com, smohammed@...dia.com, talho@...dia.com
Cc:     linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org
Subject: Re: [PATCH V14 3/5] i2c: tegra: Add DMA support

06.02.2019 22:16, Sowjanya Komatineni пишет:
> +	if (!i2c_dev->msg_read) {
> +		if (dma) {
> +			memcpy(buffer, msg->buf, msg->len);
> +			dma_sync_single_for_device(i2c_dev->dev,
> +						   i2c_dev->dma_phys,
> +						   xfer_size,
> +						   DMA_TO_DEVICE);
> +			err = tegra_i2c_dma_submit(i2c_dev, xfer_size);
> +			if (err < 0) {
> +				dev_err(i2c_dev->dev,
> +					"starting TX DMA failed, err %d\n",
> +					err);
> +				goto unlock;
> +			}
> +

This newline is not really needed here.

> +		} else {
> +			tegra_i2c_fill_tx_fifo(i2c_dev);
> +		}
> +	}

That's my last comment for v14. Looking forward for v15!