cpufreq / CPPC: Mark acpi_ids as used
authorNathan Chancellor <natechancellor@gmail.com>
Tue, 2 Oct 2018 22:34:57 +0000 (15:34 -0700)
committerRafael J. Wysocki <rafael.j.wysocki@intel.com>
Wed, 3 Oct 2018 11:36:27 +0000 (13:36 +0200)
commit8ff3c22688ff3616ee53c5c54b3ee66a73326175
tree6c1ad0438ac6651107aba748bff75524e604fdb0
parent7f9558e14cfd43999da325008262a2c6d638a527
cpufreq / CPPC: Mark acpi_ids as used

Clang warns:

drivers/cpufreq/cppc_cpufreq.c:431:36: warning: variable 'cppc_acpi_ids'
is not needed and will not be emitted [-Wunneeded-internal-declaration]
static const struct acpi_device_id cppc_acpi_ids[] = {
                                   ^
1 warning generated.

Mark the definition as used so that Clang understands we don't want this
warning while not inhibiting Clang's dead code elimination from removing
the unreferenced internal symbol when moving the data it contains to the
globally available symbol via MODULE_DEVICE_TABLE.

$ nm -S drivers/cpufreq/cppc_cpufreq.o | grep acpi | tail -1
0000000000000000 0000000000000040 R __mod_acpi__cppc_acpi_ids_device_table

Suggested-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Signed-off-by: Nathan Chancellor <natechancellor@gmail.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
drivers/cpufreq/cppc_cpufreq.c