On Tue, Jun 27, 2023 at 7:01 PM Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote: > > + Ricky WU, Kai Heng Feng, Oleksandr Natalenko > > On Sat, 24 Jun 2023 at 22:39, Pascal Terjan <pterjan@xxxxxxxxx> wrote: > > > > Hi, > > I have an ASUS PN50 machine with a 0bda:0129 card reader. The card is > > not seen unless I reload the rtsx_usb_sdmmc module. > > Thanks for reporting, let's see how we can move this forward. > > I have looped in some of the people that has been involved in the > relevant changes for rtsx_usb. Let's see if they can help too. > > > > > I found a Debian bug report for the same regression > > https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993068 but nothing > > to see there. > > > > Trying to understand things I found > > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4dad599b8b5d1ffc5ef12a2edb13d15d537202ba > > which seemed related, so I first tried to revert it and that worked. > > Okay! That's certainly good information. Are you willing to help > running further debug testings? > > Unless I mistaken, I think we should avoid doing a plain revert > (assuming we can find another option) as it will cause us to waste a > lot of energy instead. > > > > > Assuming the description is correct and the rtsx USB driver runtime > > resumes the rtsx_usb_sdmmc device when it detects that a new card has > > been inserted, I assume this means it doesn't detect that a card was > > inserted and the problem would be in rtsx_usb rather than > > rtsx_usb_sdmmc. > > There is also another interesting commit, which was also part of the > re-work of the rtsx_usb_sdmmc driver that you pointed to above. > > commit 883a87ddf2f1 (misc: rtsx_usb: Use USB remote wakeup signaling > for card insertion detection") > > > > > I am not sure how to debug this further, usbmon doesn't see anything > > when I insert the card. > > If you are willing to run some tests, I suggest to add some debug prints in: > drivers/mmc/host/rtsx_usb_sdmmc.c > sdmmc_get_cd() > rtsx_usb_sdmmc_runtime_resume() > rtsx_usb_sdmmc_runtime_suspend() > > sdmmc_get_cd() should be returning 1 when it finds that there is card > inserted, but of course the error path would be interesting too. > > rtsx_usb_sdmmc_runtime_resume() may be called during probing of the > rtsx_usb_sdmmc driver. Beyond that point, it should also be called > when you insert an SD card. Just having a debug print in there should > help answer if that actually happens. Adding kernel parameter "usbcore.dyndbg" can also help, it will print out what's going on at USB side. Kai-Heng > > Kind regards > Uffe
