drm/amd/pm: Replace one-element array with flexible-array member

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There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].

Refactor the code according to the use of a flexible-array member in
struct phm_clock_voltage_dependency_table, instead of a one-element
array, and use the struct_size() helper to calculate the size for the
allocation.

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.9-rc1/process/deprecated.html#zero-length-and-one-element-arrays

Build-tested-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/lkml/5f7c295c.8iqp1Ifc6oiVDq%2F%2F%25lkp@intel.com/
Acked-by: Christian König <christian.koenig@amd.com>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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This commit is contained in:

Gustavo A. R. Silva 2020-10-07 11:02:26 -05:00 • committed by Alex Deucher

parent 5d731b5ac3

commit 23bdba959b

4 changed files with 8 additions and 12 deletions

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4

drivers/gpu/drm/amd/pm/inc/hwmgr.h

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9

drivers/gpu/drm/amd/pm/powerplay/hwmgr/processpptables.c

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2

drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu8_hwmgr.c

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5

drivers/gpu/drm/amd/pm/powerplay/hwmgr/smu_helper.c

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