linux-kernel - Re: [PATCH V7 2/2] i2c: i2c-qcom-geni: Add shutdown callback for i2c

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Message-ID: <20210105152747.GB1842@ninjato>
Date:   Tue, 5 Jan 2021 16:27:47 +0100
From:   Wolfram Sang <wsa@...nel.org>
To:     Roja Rani Yarubandi <rojay@...eaurora.org>
Cc:     swboyd@...omium.org, dianders@...omium.org,
        saiprakash.ranjan@...eaurora.org, gregkh@...uxfoundation.org,
        mka@...omium.org, akashast@...eaurora.org,
        msavaliy@....qualcomm.com, skakit@...eaurora.org,
        pyarlaga@...eaurora.org, rnayak@...eaurora.org, agross@...nel.org,
        bjorn.andersson@...aro.org, linux-arm-msm@...r.kernel.org,
        linux-i2c@...r.kernel.org, linux-kernel@...r.kernel.org,
        sumit.semwal@...aro.org, linux-media@...r.kernel.org
Subject: Re: [PATCH V7 2/2] i2c: i2c-qcom-geni: Add shutdown callback for i2c


> +	geni_status = readl_relaxed(gi2c->se.base + SE_GENI_STATUS);
> +	if (!(geni_status & M_GENI_CMD_ACTIVE))
> +		goto out;
> +
> +	cur = gi2c->cur;
> +	geni_i2c_abort_xfer(gi2c);
> +	if (cur->flags & I2C_M_RD)
> +		geni_i2c_rx_msg_cleanup(gi2c, cur);
> +	else
> +		geni_i2c_tx_msg_cleanup(gi2c, cur);
> +out:
> +	pm_runtime_put_sync_suspend(gi2c->se.dev);
> +}

The use of 'goto' is not needed here IMHO. I think:

	if (geni_status & M_GENI_CMD_ACTIVE) {
		do_the_stuff
	}

	pm_runtime_put_sync_suspend(...);

is more readable, in fact. Also, I don't think we really need the 'cur'
variable and just use 'gi2c->cur' but that's very minor and you can keep
it if you like it.

Reset looks good!


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