[PATCH] image-fit: don't set compression if it can't be read

[Tom Rini]

On Mon, Aug 15, 2022 at 12:38:27PM +0200, Daniel Golle wrote:

> fit_image_get_comp() should not set value -1 in case it can't read
> the compression node. Instead, leave the value untouched in that case
> as it can be absent and a default value previously defined by the
> caller of fit_image_get_comp() should be used.
> 
> As a result the warning message
> WARNING: 'compression' nodes for ramdisks are deprecated, please fix your .its file!
> no longer shows if the compression node is actually absent.
> 
> Signed-off-by: Daniel Golle <daniel at makrotopia.org>
> Reviewed-by: Simon Glass <sjg at chromium.org>

This causes most platforms to fail to build with an error such as:
https://source.denx.de/u-boot/u-boot/-/jobs/486959#L140

-- 
Tom
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