Hi Ezequiel, On Tue, Jan 05, 2021 at 10:34:14AM -0300, Ezequiel Garcia wrote: > Hi Sakari, Laurent, > > On Tue, 2021-01-05 at 05:46 +0200, Laurent Pinchart wrote: > > Hi Ezequiel, > > > > Thank you for the patch. > > > > On Mon, Jan 04, 2021 at 02:48:40PM -0300, Ezequiel Garcia wrote: > > > There is currently little to none information available > > > about the reasons why a v4l2-async device hasn't > > > probed completely. > > > > > > Inspired by the "devices_deferred" debugfs file, > > > add a file to list information about the subdevices > > > that are on waiting lists, for each notifier. > > > > > > This is useful to debug v4l2-async subdevices > > > and notifiers, for instance when doing device bring-up. > > > > > > For instance, a typical output would be: > > > > > > $ cat /sys/kernel/debug/video4linux/pending_async_subdevices > > > ipu1_csi1: > > > [fwnode] dev=20e0000.iomuxc-gpr:ipu1_csi1_mux, node=/soc/bus@2000000/iomuxc-gpr@20e0000/ipu1_csi1_mux > > > ipu1_csi0: > > > [fwnode] dev=20e0000.iomuxc-gpr:ipu1_csi0_mux, node=/soc/bus@2000000/iomuxc-gpr@20e0000/ipu1_csi0_mux > > > imx6-mipi-csi2: > > > [fwnode] dev=1-003c, node=/soc/bus@2100000/i2c@21a4000/camera@3c > > > imx-media: > > > > > > Note that match-type "custom" prints no information. > > > Since there are no in-tree users of this match-type, > > > the implementation doesn't bother. > > > > I wonder if we should drop it. > > > > That would make sense, unless we have some out-of-tree > users, and we want to support that. > > Sakari, what do you think? I think we could drop it. But I'd do that in a separate patch from this one. -- Regards, Sakari Ailus
