From: Wolfram Sang <wsa@the-dreams.de>
To: Guenter Roeck <linux@roeck-us.net>
Cc: linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] eeprom: at24: Add support for large EEPROMs connected to SMBus adapters
Date: Fri, 27 Mar 2015 09:09:47 +0100 [thread overview]
Message-ID: <20150327080947.GA900@katana> (raw)
In-Reply-To: <5512C213.7030705@roeck-us.net>
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> just to give you an update: I do have some code, but it is a bit messy,
> and it doesn't work well for ds2482 (the chip behind it still hangs up
> if I access it in parallel through i2c-dev). On top of that, it causes
> pretty significant slow-downs when accessing other devices on the same
> bus at the same time. Not surprising, I guess, since it expands the scope
> of the bus lock significantly.
Just to get a better idea: Did you try taking the adapter_lock before
the two SMBus command which needed to be concatenated (and use
smbus_xfer directly)?
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next prev parent reply other threads:[~2015-03-27 8:09 UTC|newest]
Thread overview: 38+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-02-04 16:23 [PATCH] eeprom: at24: Add support for large EEPROMs connected to SMBus adapters Guenter Roeck
2015-02-04 16:23 ` Guenter Roeck
2015-02-04 17:47 ` Wolfram Sang
2015-02-04 19:08 ` Guenter Roeck
2015-02-04 19:08 ` Guenter Roeck
2015-02-04 23:35 ` Wolfram Sang
2015-02-05 0:26 ` Guenter Roeck
2015-02-05 0:26 ` Guenter Roeck
2015-02-05 14:40 ` Wolfram Sang
2015-02-05 17:53 ` Guenter Roeck
[not found] ` <20150205175326.GA26691-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
2015-02-12 4:01 ` Guenter Roeck
2015-02-12 4:01 ` Guenter Roeck
2015-02-16 12:09 ` Wolfram Sang
2015-02-16 15:37 ` Guenter Roeck
2015-03-17 4:20 ` Guenter Roeck
2015-03-17 4:20 ` Guenter Roeck
2015-03-18 13:27 ` Wolfram Sang
2015-03-19 3:24 ` Guenter Roeck
[not found] ` <550A4162.8000009-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
2015-03-19 8:16 ` Wolfram Sang
2015-03-19 8:16 ` Wolfram Sang
2015-03-19 13:30 ` Guenter Roeck
2015-03-19 13:30 ` Guenter Roeck
2015-03-19 17:43 ` Guenter Roeck
2015-03-19 17:43 ` Guenter Roeck
2015-03-19 21:39 ` Wolfram Sang
2015-03-25 14:11 ` Guenter Roeck
[not found] ` <5512C213.7030705-0h96xk9xTtrk1uMJSBkQmQ@public.gmane.org>
2015-03-25 16:15 ` Wolfram Sang
2015-03-25 16:15 ` Wolfram Sang
2015-03-25 16:37 ` Guenter Roeck
2015-03-25 16:37 ` Guenter Roeck
2015-03-27 8:09 ` Wolfram Sang [this message]
2015-03-27 12:51 ` Guenter Roeck
2015-03-27 13:01 ` Wolfram Sang
2015-03-27 13:14 ` Guenter Roeck
2015-03-27 15:27 ` Wolfram Sang
2015-03-27 15:42 ` Guenter Roeck
2015-03-27 15:42 ` Guenter Roeck
2015-02-04 20:33 ` Guenter Roeck
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