Re: [PATCH 03/28] nvmem: add a notifier chain
From: Andrew Lunn <andrew@lunn.ch>
Date: 2018-08-08 16:15:42
Also in:
linux-arm-kernel, linux-i2c, linux-omap, lkml, netdev
On Wed, Aug 08, 2018 at 05:31:25PM +0200, Bartosz Golaszewski wrote:
From: Bartosz Golaszewski <redacted> Add a blocking notifier chain with two events (add and remove) so that users can get notified about the addition of nvmem devices they're waiting for. We'll use this instead of the at24 setup callback in the mityomapl138 board file.
Hi Bartosz What context is this notifier chain called in? I did something similar using the i2c notifier to try to work around the impending disappearing of the setup callback. But i got lockdep splats, because the notifier was called while some locks were being held, so it was not possible to register other i2c devices. The at24 setup callback is done as part of probe, so no important locks are held. Are any locks held when this notifier chain is called? Thanks Andrew -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html