Re: [PATCH v7 1/4] i2c: i2c-qcom-geni: Add bus driver for the Qualcomm GENI I2C controller

[Wolfram Sang]

On Tue, Jun 12, 2018 at 11:09:05AM -0600, Karthikeyan Ramasubramanian wrote:
> This bus driver supports the GENI based i2c hardware controller in the
> Qualcomm SOCs. The Qualcomm Generic Interface (GENI) is a programmable
> module supporting a wide range of serial interfaces including I2C. The
> driver supports FIFO mode and DMA mode of transfer and switches modes
> dynamically depending on the size of the transfer.
> 
> Signed-off-by: Karthikeyan Ramasubramanian <kramasub@xxxxxxxxxxxxxx>
> Signed-off-by: Sagar Dharia <sdharia@xxxxxxxxxxxxxx>
> Signed-off-by: Girish Mahadevan <girishm@xxxxxxxxxxxxxx>
> Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>

Looks good except one minor thing:

> +	pm_runtime_set_suspended(gi2c->se.dev);
> +	pm_runtime_set_autosuspend_delay(gi2c->se.dev, I2C_AUTO_SUSPEND_DELAY);
> +	pm_runtime_use_autosuspend(gi2c->se.dev);
> +	pm_runtime_enable(gi2c->se.dev);
> +	i2c_add_adapter(&gi2c->adap);
> +
> +	return 0;

i2c_add_adapter can fail. So, I'd guess you want to check the return
value and move it above the pm_runtime calls?

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