From: Jean Delvare <khali@linux-fr.org>
To: lm-sensors@vger.kernel.org
Subject: Re: [lm-sensors] Patch: fschmd-watchdog-v2.patch
Date: Thu, 16 Oct 2008 14:52:34 +0000 [thread overview]
Message-ID: <20081016165234.43312f22@hyperion.delvare> (raw)
In-Reply-To: <487F4DDE.7040909@hhs.nl>
Hi Hans,
On Thu, 16 Oct 2008 16:02:22 +0200, Hans de Goede wrote:
> Jean Delvare wrote:
> > As a side note, I wonder if it would make sense to have a separate lock
> > for the watchdog struct members. fschmd_update_device() can hold
> > data->update_lock for a significant amount of time, and you probably
> > don(t want to delay watchdog_timer() too much.
> >
>
> Hmm, question: can one do multiple i2c_smbus_read/write_byte_data() requests
> and will the i2c core then do locking to serialize requests?
Yes, i2c-core serializes transaction requests that go to each i2c
adapter, using the i2c_adapter->bus_lock mutex. This can be seen in
i2c-core.c, in functions i2c_smbus_xfer() and i2c_transfer().
--
Jean Delvare
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prev parent reply other threads:[~2008-10-16 14:52 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-07-17 13:49 [lm-sensors] Patch: fschmd-watchdog-v2.patch Hans de Goede
2008-08-18 14:32 ` Jean Delvare
2008-10-16 14:02 ` Hans de Goede
2008-10-16 14:52 ` Jean Delvare [this message]
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