Hi, I am trying to upstream a patch set that wasn't written by me. The original patch has a lot of warnings and errors reported by checkpatch. Someone else corrected some of those with another patch and I added on a third patch correcting the rest of the warnings and errors that I thought were appropriate to fix. When checkpatch is run on the file that the patches affect, the output looks okay to me, but when I run checkpatch on the patches themselves, the patches still have the same errors and warnings, because I made my changes in a separate patch. So is it okay to have checkpatch errors/warnings for individual patches as long as the patch series as a whole is reasonably checkpatch clean or should I be amending my changes to the original commit and squashing the other cleanup patch into the first patch, so that I am left with one patch that passes checkpatch? If I should be squashing the patches into a single patch, how do I handle the signed-off-by lines as each of the three patches is currently signed off by the respective author of the patch? Obviously I can sign off on the squashed patch for myself. Do I just send it to the mailing list with just my sign off and CC the authors, so that they can sign off on it? From what I've been told, it sounds like CC'ing the authors and having them reply with their sign off is the appropriate way to handle this, but I want to make sure before I start mailing out patches, and this isn't something that I have been able to find an answer to. Cheers, Joseph