From: Wolfram Sang <wsa@kernel.org>
To: Marek Behun <marek.behun@nic.cz>
Cc: "Russell King - ARM Linux admin" <linux@armlinux.org.uk>,
"Andrew Lunn" <andrew@lunn.ch>,
netdev@vger.kernel.org, "Pali Rohár" <pali@kernel.org>,
linux-i2c@vger.kernel.org
Subject: Re: question about i2c_transfer() function (regarding mdio-i2c on RollBall SFPs)
Date: Thu, 7 Jan 2021 22:02:48 +0100 [thread overview]
Message-ID: <20210107210248.GA894@kunai> (raw)
In-Reply-To: <20210107192500.54d2d0f0@nic.cz>
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> My question is whether this is allowed, whether the msgs array passed
> to the i2c_transfer() function can have multiple msgs pointing to the
> same buffer (the one into which the original page is first stored
> with first i2c_msg and then restored from it in the last i2c_msg).
Sending the messages is serialized, so the buffers won't interfere. At
first glance, I think it would work this way. But it's late evening
here, so I will have another look again tomorrow.
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next prev parent reply other threads:[~2021-01-07 21:03 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 18:25 question about i2c_transfer() function (regarding mdio-i2c on RollBall SFPs) Marek Behun
2021-01-07 21:02 ` Wolfram Sang [this message]
2021-01-07 21:42 ` Marek Behun
2021-01-08 8:40 ` Wolfram Sang
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