Re: [PATCH] ACPICA: fix -Wfallthrough

[Jon Hunter]

On 11/11/2020 02:11, Nick Desaulniers wrote:
> The "fallthrough" pseudo-keyword was added as a portable way to denote
> intentional fallthrough. This code seemed to be using a mix of
> fallthrough comments that GCC recognizes, and some kind of lint marker.
> I'm guessing that linter hasn't been run in a while from the mixed use
> of the marker vs comments.
> 
> Signed-off-by: Nick Desaulniers <ndesaulniers@xxxxxxxxxx>


I know this is not the exact version that was merged, I can't find it on
the list, but looks like the version that was merged [0], is causing
build errors with older toolchains (GCC v6) ...

/dvs/git/dirty/git-master_l4t-upstream/kernel/drivers/acpi/acpica/dscontrol.c: In function ‘acpi_ds_exec_begin_control_op’:
/dvs/git/dirty/git-master_l4t-upstream/kernel/drivers/acpi/acpica/dscontrol.c:65:3: error: ‘ACPI_FALLTHROUGH’ undeclared (first use in this function)
   ACPI_FALLTHROUGH;
   ^~~~~~~~~~~~~~~~
/dvs/git/dirty/git-master_l4t-upstream/kernel/drivers/acpi/acpica/dscontrol.c:65:3: note: each undeclared identifier is reported only once for each function it appears in
/dvs/git/dirty/git-master_l4t-upstream/kernel/scripts/Makefile.build:287: recipe for target 'drivers/acpi/acpica/dscontrol.o' failed

Cheers
Jon

[0] https://github.com/acpica/acpica/commit/4b9135f5
	 
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