[PATCH 0/3] ARM: OMAP2+: hwmod: RTC: Add lock and unlock hooks

Paul Walmsley paul at pwsan.com
Wed Jul 15 17:15:13 PDT 2015


On Tue, 14 Jul 2015, Tero Kristo wrote:

> On 07/14/2015 01:09 PM, Lokesh Vutla wrote:
> > Hi,
> > On Wednesday 10 June 2015 02:56 PM, Lokesh Vutla wrote:
> > > Some IP blocks like RTC, needs an additional unlocking mechanism for
> > > writing to its registers. This patch adds optional lock and unlock
> > > function pointers to the IP block's hwmod data which gets executed
> > > before and after writing into IP sysconfig register.
> > > And also hook lock and unlock functions to AMx3xx, DRA7 RTC hwmod data,
> > > so that sysconfig registers are updated properly.
> > ping on this series.
> > 
> > Thanks and regards,
> > Lokesh
> 

[...]

> It is also racy, as there is no locking in place to avoid concurrent access to
> the lock/unlock registers across hwmod+driver.

I don't see the race.  Where is it?


- Paul



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