diff options
| -rw-r--r-- | linux-core/drm_compat.h | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/linux-core/drm_compat.h b/linux-core/drm_compat.h index c7f72e33..e09be479 100644 --- a/linux-core/drm_compat.h +++ b/linux-core/drm_compat.h @@ -333,9 +333,24 @@ typedef _Bool bool; #if (defined(CONFIG_X86) && defined(CONFIG_X86_32) && defined(CONFIG_HIGHMEM)) +/* + * pgd_offset_k() is a macro that uses the symbol init_mm, + * check that it is available. + */ +# if ((LINUX_VERSION_CODE < KERNEL_VERSION(2,6,25)) || \ + defined(CONFIG_UNUSED_SYMBOLS)) #define DRM_KMAP_ATOMIC_PROT_PFN extern void *kmap_atomic_prot_pfn(unsigned long pfn, enum km_type type, pgprot_t protection); +# else +#warning "init_mm is not available on this kernel!" +static inline void *kmap_atomic_prot_pfn(unsigned long pfn, enum km_type type, + pgprot_t protection) +{ + /* stub */ + return NULL; +} +# endif /* no init_mm */ #endif #if !defined(flush_agp_mappings) |