Re: [PATCH 2/2] drivercore: revert addition of of_match to structdevice

[David Miller]

From: Grant Likely <grant.likely@xxxxxxxxxxxx>
Date: Wed, 18 May 2011 13:21:05 -0600

> Commit b826291c, "drivercore/dt: add a match table pointer to struct
> device" added an of_match pointer to struct device to cache the
> of_match_table entry discovered at driver match time.  This was unsafe
> because matching is not an atomic operation with probing a driver.  If
> two or more drivers are attempted to be matched to a driver at the
> same time, then the cached matching entry pointer could get
> overwritten.
> 
> This patch reverts the of_match cache pointer and reworks all users to
> call of_match_device() directly instead.
> 
> Signed-off-by: Grant Likely <grant.likely@xxxxxxxxxxxx>

Tested on SunBlade2500 and Niagara2+

Acked-by: David S. Miller <davem@xxxxxxxxxxxxx>
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