Re: [PATCH v4 18/36] media: Add i.MX media core driver

[Russell King - ARM Linux]

On Thu, Feb 16, 2017 at 02:02:03PM +0100, Philipp Zabel wrote:
> On Wed, 2017-02-15 at 18:19 -0800, Steve Longerbeam wrote:
> > +- imx-csi subdev is not being autoloaded as a kernel module, probably
> > +  because ipu_add_client_devices() does not register the IPU client
> > +  platform devices, but only allocates those devices.
> 
> As Russell points out, this is an issue with the ipu-v3 driver, which
> needs to be fixed to stop setting the ipu client devices' dev->of_node
> field.

>From my local testing (albiet the shambles that is bits of v4l2) setting
dev->of_node is not necessary for imx-drm - imx-drm comes up fine without.

Fixing _this_ code for that is not too difficult - it's a matter of:

	priv->sd.of_node = pdata->of_node;

in imx_csi_probe().  However, the difficult bit is the poor state of
code in v4l2, particularly the v4l2-async crap.  Right now, fixing the
module autoloading will oops the kernel, so it's best that module
autoloading remains broken for the time being.

-- 
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