[RFC PATCH v3 1/9] staging: imx-drm-core: don't request probe deferral in imx_drm_encoder_parse_of (original) (raw)

Russell King - ARM Linux linux at arm.linux.org.uk
Mon Feb 24 07:49:19 PST 2014

On Tue, Feb 18, 2014 at 12:36:02PM +0100, Philipp Zabel wrote:

From: Lucas Stach <l.stach at pengutronix.de>

Since imxdrmencoderparseof is called from the encoder bind callbacks, it is too late to request probe deferral. Rather the core should make sure that the crtcs are bound before the encoders, after all needed components are probed.

Why is it too late? -EPROBE_DEFER from this point will cause the driver initialisation to correctly unwind and return -EPROBE_DEFER to the last-to-be-added component.

This fixes probe failure when using the LDB on i.MX6.

More details please.

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