linux-kernel - Re: [PATCH 5.10 041/289] i2c: Add I2C_AQ_NO_REP

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Message-ID: <20210519201305.GB14212@amd>
Date:   Wed, 19 May 2021 22:13:05 +0200
From:   Pavel Machek <pavel@...x.de>
To:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Wolfram Sang <wsa@...nel.org>,
        Bence Csókás <bence98@....bme.hu>,
        Sasha Levin <sashal@...nel.org>
Subject: Re: [PATCH 5.10 041/289] i2c: Add I2C_AQ_NO_REP_START adapter quirk

On Mon 2021-05-17 15:59:26, Greg Kroah-Hartman wrote:
> From: Bence Csókás <bence98@....bme.hu>
> 
> [ Upstream commit aca01415e076aa96cca0f801f4420ee5c10c660d ]
> 
> This quirk signifies that the adapter cannot do a repeated
> START, it always issues a STOP condition after transfers.
> 
> Suggested-by: Wolfram Sang <wsa@...nel.org>
> Signed-off-by: Bence Csókás <bence98@....bme.hu>
> Signed-off-by: Wolfram Sang <wsa@...nel.org>
> Signed-off-by: Sasha Levin <sashal@...nel.org>

Why is this pushed to 5.10 and 4.19? The define is not used anywhere
AFAICT.

Best regards,
							Pavel
							
> +++ b/include/linux/i2c.h
> @@ -687,6 +687,8 @@ struct i2c_adapter_quirks {
> +/* adapter cannot do repeated START */
> +#define I2C_AQ_NO_REP_START		BIT(7)

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