marlin/sailfish: fix MediaProvider using 100% CPU

- by disabling mtp over functionfs
- affects both GrapheneOS and LineageOS
- might need to be applied to other devices

[pid  2482] ppoll([{fd=42, events=POLLIN}, {fd=51, events=POLLIN}], 2, {tv_sec=0, tv_nsec=0}, NULL, 0) = 0 (Timeout)
lrwx------ 1 u0_a13 u0_a13 64 2019-09-05 18:47 42 -> /dev/usb-ffs/mtp/ep0
lrwx------ 1 u0_a13 u0_a13 64 2019-09-05 18:47 51 -> anon_inode:[eventfd]

https://forum.xda-developers.com/android/help/pixel2-help-diagnose-android-process-t3863274
https://bugs.chromium.org/p/chromium/issues/detail?id=947901

Patches/Common/android_vendor_divested/divestos.mk

@@ -15,8 +15,7 @@ PRODUCT_PROPERTY_OVERRIDES += \
     ro.config.notification_sound=Pong.ogg \
     ro.config.alarm_alert=Alarm_Buzzer.ogg \
     keyguard.no_require_sim=true \
-    ro.build.selinux=1 \
+    ro.build.selinux=1
-    ro.storage_manager.enabled=false
 #    ro.control_privapp_permissions=log
 #    ro.control_privapp_permissions=enforce
 
@@ -25,6 +24,4 @@ PRODUCT_COPY_FILES += \
     vendor/divested/prebuilts/etc/additional_fdroid_repos.xml:system/etc/org.fdroid.fdroid/additional_repos.xml
 
 #Include packages
-#PRODUCT_PACKAGES += BlobBlocker
-#PRODUCT_PACKAGES += ModuleBlocker
 include vendor/divested/packages.mk

Patches/Common/android_vendor_divested/module_blocker.mk

@@ -31,7 +31,6 @@ LOCAL_OVERRIDES_PACKAGES := \
     CtsShimPrebuilt \
     CtsShimPrivPrebuilt \
     Traceur \
-    StorageManager \
     PrintRecommendationService \
     CompanionDeviceManager \
     MusicFX

Patches/LineageOS-15.1/android_device_google_marlin/0001-Fix_MediaProvider_Deadlock.patch

@@ -0,0 +1,42 @@
+diff --git a/init.common.usb.rc b/init.common.usb.rc
+index 632b6495..23bdb19f 100644
+--- a/init.common.usb.rc
++++ b/init.common.usb.rc
+@@ -12,18 +12,13 @@ on boot
+     write /sys/class/android_usb/android0/f_rndis_qc/rndis_transports BAM2BAM_IPA
+     write /sys/module/g_android/parameters/mtp_tx_req_len 131072
+     write /sys/module/g_android/parameters/mtp_rx_req_len 131072
+-    setprop sys.usb.ffs.max_write 524288
+-    setprop sys.usb.ffs.max_read 524288
+-    setprop sys.usb.mtp.device_type 3
+     setprop sys.usb.rps_mask 0
+ 
+ on post-fs
+-    write /sys/class/android_usb/android0/f_ffs/aliases adb,mtp
++    write /sys/class/android_usb/android0/f_ffs/aliases adb
+     mkdir /dev/usb-ffs 0775 shell shell
+     mkdir /dev/usb-ffs/adb 0770 shell shell
+     mount functionfs adb /dev/usb-ffs/adb noatime uid=2000,gid=2000,no_disconnect=1
+-    mkdir /dev/usb-ffs/mtp 0770 mtp mtp
+-    mount functionfs mtp /dev/usb-ffs/mtp noatime rmode=0770,fmode=0660,uid=1024,gid=1024,no_disconnect=1
+ 
+ on property:sys.usb.config=mtp
+     stop adbd
+@@ -81,7 +76,7 @@ on property:sys.usb.config=ptp
+     write /sys/class/android_usb/android0/bDeviceClass 0
+     write /sys/class/android_usb/android0/bDeviceSubClass 0
+     write /sys/class/android_usb/android0/bDeviceProtocol 0
+-    write /sys/class/android_usb/android0/functions mtp
++    write /sys/class/android_usb/android0/functions ${sys.usb.config}
+     write /sys/class/android_usb/android0/enable 1
+     setprop sys.usb.state ${sys.usb.config}
+ 
+@@ -92,7 +87,7 @@ on property:sys.usb.config=ptp,adb
+     write /sys/class/android_usb/android0/bDeviceClass 0
+     write /sys/class/android_usb/android0/bDeviceSubClass 0
+     write /sys/class/android_usb/android0/bDeviceProtocol 0
+-    write /sys/class/android_usb/android0/functions mtp,adb
++    write /sys/class/android_usb/android0/functions ${sys.usb.config}
+     write /sys/class/android_usb/android0/enable 1
+     start adbd
+     setprop sys.usb.state ${sys.usb.config}

Patches/LineageOS-16.0/android_device_google_marlin/0001-Fix_MediaProvider_Deadlock.patch

@@ -0,0 +1,44 @@
+diff --git a/init.common.usb.rc b/init.common.usb.rc
+index 58743917..23bdb19f 100644
+--- a/init.common.usb.rc
++++ b/init.common.usb.rc
+@@ -10,18 +10,15 @@ on boot
+     write /sys/class/android_usb/f_mass_storage/lun/nofua 1
+ 
+     write /sys/class/android_usb/android0/f_rndis_qc/rndis_transports BAM2BAM_IPA
+-    setprop sys.usb.mtp.device_type 3
++    write /sys/module/g_android/parameters/mtp_tx_req_len 131072
++    write /sys/module/g_android/parameters/mtp_rx_req_len 131072
+     setprop sys.usb.rps_mask 0
+ 
+ on post-fs
+-    write /sys/class/android_usb/android0/f_ffs/aliases adb,mtp,ptp
++    write /sys/class/android_usb/android0/f_ffs/aliases adb
+     mkdir /dev/usb-ffs 0775 shell shell
+     mkdir /dev/usb-ffs/adb 0770 shell shell
+     mount functionfs adb /dev/usb-ffs/adb noatime uid=2000,gid=2000,no_disconnect=1
+-    mkdir /dev/usb-ffs/mtp 0770 mtp mtp
+-    mkdir /dev/usb-ffs/ptp 0770 mtp mtp
+-    mount functionfs mtp /dev/usb-ffs/mtp rmode=0770,fmode=0660,uid=1024,gid=1024,no_disconnect=1
+-    mount functionfs ptp /dev/usb-ffs/ptp rmode=0770,fmode=0660,uid=1024,gid=1024,no_disconnect=1
+ 
+ on property:sys.usb.config=mtp
+     stop adbd
+@@ -79,7 +76,7 @@ on property:sys.usb.config=ptp
+     write /sys/class/android_usb/android0/bDeviceClass 0
+     write /sys/class/android_usb/android0/bDeviceSubClass 0
+     write /sys/class/android_usb/android0/bDeviceProtocol 0
+-    write /sys/class/android_usb/android0/functions ptp
++    write /sys/class/android_usb/android0/functions ${sys.usb.config}
+     write /sys/class/android_usb/android0/enable 1
+     setprop sys.usb.state ${sys.usb.config}
+ 
+@@ -90,7 +87,7 @@ on property:sys.usb.config=ptp,adb
+     write /sys/class/android_usb/android0/bDeviceClass 0
+     write /sys/class/android_usb/android0/bDeviceSubClass 0
+     write /sys/class/android_usb/android0/bDeviceProtocol 0
+-    write /sys/class/android_usb/android0/functions ptp,adb
++    write /sys/class/android_usb/android0/functions ${sys.usb.config}
+     write /sys/class/android_usb/android0/enable 1
+     start adbd
+     setprop sys.usb.state ${sys.usb.config}

Scripts/LineageOS-15.1/Patch.sh

@@ -196,6 +196,9 @@ if [ "$DOS_HOSTS_BLOCKING" = false ]; then echo "PRODUCT_PACKAGES += $DOS_HOSTS_
 #
 #START OF DEVICE CHANGES
 #
+enterAndClear "device/google/marlin";
+patch -p1 < "$DOS_PATCHES/android_device_google_marlin/0001-Fix_MediaProvider_Deadlock.patch"; #Fix MediaProvider using 100% CPU (due to broken ppoll on functionfs?)
+
 enterAndClear "device/lge/g2-common";
 sed -i '3itypeattribute hwaddrs misc_block_device_exception;' sepolicy/hwaddrs.te;
 

Scripts/LineageOS-16.0/Patch.sh

@@ -190,6 +190,9 @@ echo "PRODUCT_PACKAGES += vendor.lineage.trust@1.0-service" >> packages.mk; #All
 #
 #START OF DEVICE CHANGES
 #
+enterAndClear "device/google/marlin";
+patch -p1 < "$DOS_PATCHES/android_device_google_marlin/0001-Fix_MediaProvider_Deadlock.patch"; #Fix MediaProvider using 100% CPU (due to broken ppoll on functionfs?)
+
 enterAndClear "device/lge/g2-common";
 sed -i '3itypeattribute hwaddrs misc_block_device_exception;' sepolicy/hwaddrs.te;