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217cf656e2
The devm alloc functions that we have may follow the Linux kernel model
where allocations are (almost always) automatically free()'d. However,
quite often we don't enable, in full U-Boot, the tracking and free()'ing
functionality. This in turn leads to memory leaks because the driver
author expects that since the functions have the same name as in the
Linux Kernel they have the same behavior. In turn we then get
functionally correct commits such as commit 00e1fed93c8c ("firmware:
ti_sci: Fix memory leaks in devm_ti_sci_get_of_resource") that manually
add these calls. Rather than manually tracking allocations and
implementing free()s, rework things so that we follow expectations by
enabling the DEVRES functionality (outside of xPL phases).
This turns DEVRES from a prompted symbol to a symbol that must be
select'd, and we now remove our non-managed alloc/free functions from
outside of xPL builds.
Reviewed-by: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
37 lines
1.0 KiB
Plaintext
37 lines
1.0 KiB
Plaintext
menu "Multiplexer drivers"
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config MULTIPLEXER
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bool "Multiplexer Support"
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depends on DM
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select DEVRES
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help
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The mux framework is a minimalistic subsystem that handles multiplexer
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controllers. It provides the same API as Linux and mux drivers should
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be portable with a minimum effort.
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if MULTIPLEXER
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config SPL_MUX_MMIO
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bool "MMIO register bitfield-controlled Multiplexer"
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depends on MULTIPLEXER && SYSCON
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help
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MMIO register bitfield-controlled Multiplexer controller.
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The driver builds multiplexer controllers for bitfields in a syscon
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register. For N bit wide bitfields, there will be 2^N possible
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multiplexer states.
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config MUX_MMIO
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bool "MMIO register bitfield-controlled Multiplexer"
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depends on MULTIPLEXER && SYSCON
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help
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MMIO register bitfield-controlled Multiplexer controller.
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The driver builds multiplexer controllers for bitfields in a syscon
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register. For N bit wide bitfields, there will be 2^N possible
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multiplexer states.
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endif
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endmenu
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