linux-stable/drivers/platform
Maximilian Luz 44acfc22c7 platform/surface: aggregator: Fix initialization order when compiling as builtin module
When building the Surface Aggregator Module (SAM) core, registry, and
other SAM client drivers as builtin modules (=y), proper initialization
order is not guaranteed. Due to this, client driver registration
(triggered by device registration in the registry) races against bus
initialization in the core.

If any attempt is made at registering the device driver before the bus
has been initialized (i.e. if bus initialization fails this race) driver
registration will fail with a message similar to:

    Driver surface_battery was unable to register with bus_type surface_aggregator because the bus was not initialized

Switch from module_init() to subsys_initcall() to resolve this issue.
Note that the serdev subsystem uses postcore_initcall() so we are still
able to safely register the serdev device driver for the core.

Fixes: c167b9c7e3 ("platform/surface: Add Surface Aggregator subsystem")
Reported-by: Blaž Hrastnik <blaz@mxxn.io>
Signed-off-by: Maximilian Luz <luzmaximilian@gmail.com>
Link: https://lore.kernel.org/r/20220429195738.535751-1-luzmaximilian@gmail.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
2022-05-06 13:05:57 +02:00
..
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mellanox platform/mellanox: mlxbf-pmc: Fix an IS_ERR() vs NULL bug in mlxbf_pmc_map_counters 2021-12-21 19:35:22 +01:00
mips MIPS: Loongson64: Add missing of_node_put() in ls2k_reset_init() 2022-01-05 09:53:45 +01:00
olpc spi: make remove callback a void function 2022-02-09 13:00:45 +00:00
surface platform/surface: aggregator: Fix initialization order when compiling as builtin module 2022-05-06 13:05:57 +02:00
x86 platform/x86/intel: Fix 'rmmod pmt_telemetry' panic 2022-05-06 13:05:57 +02:00
Kconfig platform: Add Surface platform directory 2020-10-27 12:51:03 +01:00
Makefile platform: Add Surface platform directory 2020-10-27 12:51:03 +01:00