On 29 July 2015 at 16:00, Mark Brown <broonie@xxxxxxxxxx> wrote: > On Wed, Jul 29, 2015 at 12:19:57PM +0200, Michal Suchanek wrote: > > Please use subject lines matching the style for the subsytsem so people > can spot that the patch is in some way relevant. > >> The controller-data subnode has no compatible. This can lead to other >> drivers getting confused by it. Add a compatible to make devicetreee >> unambiguous. > > I can't tell from this commit message what the issue you're trying to > fix is, sorry. Nodes without compatible strings are entirely normal and > don't need compatible strings. It sounds like a bug in whatever other > driver is becoming confused. The driver that gets confused is ofpart. The two-line patch to allow it to just ignore controller-data has been rejected on the basis that s3c64xx should use a compatible string because ofpart monopolizes all nodes without compatible which are children of a mtd device. Devicetrees containing such nodes that are not partitions are presumably invalid and should be rejected when ofpart is compiled into the kernel. > >> + if (!of_get_property(data_np, "compatible", NULL) || >> + strcmp(of_get_property(data_np, "compatible", NULL), >> + "samsung,s3c-controller-data")) >> + dev_err(&spi->dev, "child node 'controller-data' does not have correct compatible\n"); > > This will break all existing users which is not acceptable for > mainline, we need to preserve compatibility with existing device trees. It will not break anything. It will just spam dmesg. Thanks Michal -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
