diff options
| author | Miguel Ojeda <miguel.ojeda.sandonis@gmail.com> | 2019-08-02 12:37:56 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-08-06 18:29:42 +0200 |
| commit | fe5844365ec6c4d61838f289926f4d55da94d2fb (patch) | |
| tree | 01907d7625db83ad6c8c01f6277fbe4f40a07148 | |
| parent | 0b326994892a2f8ed76cd4867c3aebcec9e6b54d (diff) | |
Backport minimal compiler_attributes.h to support GCC 9
This adds support for __copy to v4.9.y so that we can use it in
init/exit_module to avoid -Werror=missing-attributes errors on GCC 9.
Link: https://lore.kernel.org/lkml/259986242.BvXPX32bHu@devpool35/
Cc: <stable@vger.kernel.org>
Suggested-by: Rolf Eike Beer <eb@emlix.com>
Signed-off-by: Miguel Ojeda <miguel.ojeda.sandonis@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
| -rw-r--r-- | include/linux/compiler.h | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/include/linux/compiler.h b/include/linux/compiler.h index 3050de0dac96..0020ee1cab37 100644 --- a/include/linux/compiler.h +++ b/include/linux/compiler.h @@ -54,6 +54,22 @@ extern void __chk_io_ptr(const volatile void __iomem *); #ifdef __KERNEL__ +/* + * Minimal backport of compiler_attributes.h to add support for __copy + * to v4.9.y so that we can use it in init/exit_module to avoid + * -Werror=missing-attributes errors on GCC 9. + */ +#ifndef __has_attribute +# define __has_attribute(x) __GCC4_has_attribute_##x +# define __GCC4_has_attribute___copy__ 0 +#endif + +#if __has_attribute(__copy__) +# define __copy(symbol) __attribute__((__copy__(symbol))) +#else +# define __copy(symbol) +#endif + #ifdef __GNUC__ #include <linux/compiler-gcc.h> #endif |