When the pca963x driver is initialized in open-drain mode it does not set properly the OUTDRV setting (bit 2) of the Mode register 2. Instead of setting bit 2 to 0 the driver keeps it as 1.

The issue was introduced in bb29b9c ("leds: pca963x: Add bindings to invert polarity").

I have a small patch ready that fixes this and it looks like it should go into the mainline kernel first. I have a basic understanding of the principles in submitting patches for the mainline kernel, but I am struggling with the steps necessary upstreaming it, so that it gets on a Raspbian release sooner (not when Raspbian catches up with the mainline).

Will adding Cc: stable@vger.kernel.org in the sign-off area of the patch be enough for this?

I will appreciate any advice on what is necessary to propagate the patch to the right place and proper way.