19.03.2021 18:50, Greg Kroah-Hartman пишет: >> Then initialization order won't be a problem. > I don't understand the problem here, what is wrong with the patch as-is? The cma->stat is NULL at the time when CMA is used on ARM because cma->stat is initialized at the subsys level. This is the problem, apparently. > Also, watch out, if you only make the kobject dynamic, how are you going > to get backwards from the kobject to the values you want to send to > userspace in the show functions? Still there should be a wrapper around the kobj with a back reference to the cma entry. If you're suggesting that I should write a patch, then I may take a look at it later on. Although, I assume that Minchan could just correct this patch and re-push it to -next.
