Hi, What I am trying to do is to modify ufs driver included in kernel (kernel/private/drivers/scsi/ufs/), and load it to Pixel5a which is flashed with AOSP.
What I did was, downloaded AOSP source code from https://source.android.com/setup/build/downloading built it as barbet and flashed by using $ fastboot flashall -w And for modifying ufs driver, downloaded kernel source (android-msm-barbet-4.19-android12-qpr1) from https://source.android.com/setup/build/building-kernels and changed a bit of ufs driver code with printk lines to check how it works located at kernel/private/drivers/scsi/ufs/-- (modified files are ufshcd.c, ufs-qcom.c) And pushed ufshcd-core.ko, ufshcd-pltfrm.ko and ufs-qcom.ko on pixel5a at /vendor/lib/modules/--- (after remounting the file system as readwrite) I checked corresponding files were changed successfully. and after rebooting, I checked dmesg and says it initialized ufshcd-core.ko and ufs-qcom.ko located at /lib/modules/ and prints ufs-qcom related printk lines that were originally included before I modify... However, it does not show printk lines I included :"( Am I doing something wrong to modify the ufs driver kernel module? I even tried to include ufshcd as builtin and failed to boot... *Does anyone know how to modify ufs driver on android phones? * Thanks, Yoona -- -- You received this message because you are subscribed to the "Android Building" mailing list. To post to this group, send email to android-building@googlegroups.com To unsubscribe from this group, send email to android-building+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-building?hl=en --- You received this message because you are subscribed to the Google Groups "Android Building" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-building+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/android-building/9a524b27-c557-4dcb-9131-7bf0a915f7fen%40googlegroups.com.
