On Wed, 21 Aug 2013 15:08:16 +0100 Mark Brown <broo...@kernel.org> wrote:
> On Wed, Aug 21, 2013 at 03:14:23PM +0200, David Jander wrote: > > > Here's the explanation: > > > 1. If a driver initializes a regmap with a RB-tree cache, and starts > > writing to registers in some arbitrary order, you might get overlapping > > rbnodes: Suppose I have this rb-tree (a real case I happen to have): > > > # cat /sys/kernel/debug/regmap/1-000a/rbtree > > 2-19 (24) > > 4-1b (24) > > Like I say this isn't supposed to be the case in the first place, those > two nodes should be being merged - what we need to understand is where > the overlapping nodes came from. As I said in my last e-mail just a few seconds ago, it does happen when: 1. 4-1b is cached and 2-19 isn't yet. 2. A write access to register 2 occurs. Hope this helps. Best regards, -- David Jander Protonic Holland. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
