A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

ACPI / scan: Fix enumeration for special SPI and I2C devices

Browse source 
Commit f406270bf7 ("ACPI / scan: Set the visited flag for all
enumerated devices") caused that two group of special SPI or I2C
devices do not enumerate. SPI and I2C devices are expected to be
enumerated by the SPI and I2C subsystems but change caused that
acpi_bus_attach() marks those devices with acpi_device_set_enumerated().

First group of devices are matched using Device Tree compatible property
with special _HID "PRP0001". Those devices have matched scan handler,
acpi_scan_attach_handler() retuns 1 and acpi_bus_attach() marks them
with acpi_device_set_enumerated().

Second group of devices without valid _HID such as "LNXVIDEO" have
device->pnp.type.platform_id set to zero and change again marks them
with acpi_device_set_enumerated().

Fix this by flagging the SPI and I2C devices during struct acpi_device
object initialization time and let the code in acpi_bus_attach() to go
through the device_attach() and acpi_default_enumeration() path for all
SPI and I2C devices.

Fixes: f406270bf7 (ACPI / scan: Set the visited flag for all enumerated devices)
Signed-off-by: Jarkko Nikula <[email protected]>
Acked-by: Mika Westerberg <[email protected]>
Cc: 4.11+ <[email protected]> # 4.11+
Signed-off-by: Rafael J. Wysocki <[email protected]>
This commit is contained in:
Jarkko Nikula 2017-06-19 15:53:01 +03:00 • committed by Rafael J. Wysocki
commit e4330d8bf6
2 changed files with 39 additions and 31 deletions
Download patch file Download diff file Expand all files Collapse all files

3
include/acpi/acpi_bus.h
View file

@ -210,7 +210,8 @@ struct acpi_device_flags {
u32 of_compatible_ok:1;
u32 coherent_dma:1;
u32 cca_seen:1;
u32 reserved:20;
u32 spi_i2c_slave:1;
u32 reserved:19;
};
/* File System */