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| author | Jani Nikula <jani.nikula@intel.com> | 2019-11-15 13:17:39 +0200 |
|---|---|---|
| committer | Jani Nikula <jani.nikula@intel.com> | 2019-11-15 13:17:39 +0200 |
| commit | e205ceeb253723f4e4bdce619844ed678ae48276 (patch) | |
| tree | b6f5e3b21f915320a86733504faf8206569b8057 /include/linux/compiler_attributes.h | |
| parent | 1cdc2330e8d396c9cbebfc75fba4c94d34f80782 (diff) | |
| parent | 17cc51390c141662748dbbc2fe98f3ed10f2e13e (diff) | |
| download | lwn-e205ceeb253723f4e4bdce619844ed678ae48276.tar.gz lwn-e205ceeb253723f4e4bdce619844ed678ae48276.zip | |
Merge drm/drm-next into drm-intel-next-queued
Backmerge to get dfce90259d74 ("Backmerge i915 security patches from
commit 'ea0b163b13ff' into drm-next") and thus 100d46bd72ec ("Merge
Intel Gen8/Gen9 graphics fixes from Jon Bloomfield.").
Signed-off-by: Jani Nikula <jani.nikula@intel.com>
Diffstat (limited to 'include/linux/compiler_attributes.h')
| -rw-r--r-- | include/linux/compiler_attributes.h | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/include/linux/compiler_attributes.h b/include/linux/compiler_attributes.h index 6b318efd8a74..cdf016596659 100644 --- a/include/linux/compiler_attributes.h +++ b/include/linux/compiler_attributes.h @@ -40,6 +40,7 @@ # define __GCC4_has_attribute___noclone__ 1 # define __GCC4_has_attribute___nonstring__ 0 # define __GCC4_has_attribute___no_sanitize_address__ (__GNUC_MINOR__ >= 8) +# define __GCC4_has_attribute___fallthrough__ 0 #endif /* @@ -186,6 +187,22 @@ #endif /* + * Add the pseudo keyword 'fallthrough' so case statement blocks + * must end with any of these keywords: + * break; + * fallthrough; + * goto <label>; + * return [expression]; + * + * gcc: https://gcc.gnu.org/onlinedocs/gcc/Statement-Attributes.html#Statement-Attributes + */ +#if __has_attribute(__fallthrough__) +# define fallthrough __attribute__((__fallthrough__)) +#else +# define fallthrough do {} while (0) /* fallthrough */ +#endif + +/* * Note the missing underscores. * * gcc: https://gcc.gnu.org/onlinedocs/gcc/Common-Function-Attributes.html#index-noinline-function-attribute |