Re: [PATCH] i2c: Limit core locking to the necessary sections

[Rodolfo Giometti <giometti-AVVDYK/kqiJWk0Htik3J/w@public.gmane.org>]

On Thu, May 14, 2009 at 09:04:36PM +0200, Jean Delvare wrote:
> The i2c-core code tends to hold the core lock for longer than it
> should. Limit locking to the necessary sections for both performance
> and clarity. This is also a requirement to support I2C multiplexers in
> the future.
> 
> Testing was successful on my system but I would love to hear from other
> testers. This kind of thing is easy to get wrong.
> 
> Signed-off-by: Jean Delvare <khali-PUYAD+kWke1g9hUCZPvPmw@public.gmane.org>
> Cc: Rodolfo Giometti <giometti-k2GhghHVRtY@public.gmane.org>
> Cc: David Brownell <david-b-yBeKhBN/0LDR7s880joybQ@public.gmane.org>
> ---
> Rodolfo, this should solve the deadlocks you had been encountering
> while working on I2C multiplexing support. I would like you to give a
> try to my current stack of i2c patches:
> ftp://ftp.kernel.org/pub/linux/kernel/people/jdelvare/linux-2.6/jdelvare-i2c.tar.gz
> 
> If it works OK, please rebase your multiplexing patches on top of it.
> Then I'll review them. I'd like to have initial multiplexing support in
> kernel 2.6.31, which doesn't leave us too much time.

Sorry for the (very) long delay... however it works. :)

Ciao,

Rodolfo

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