diff options
| author | Pekka Paalanen <pq@iki.fi> | 2008-10-27 21:21:15 +0200 |
|---|---|---|
| committer | Pekka Paalanen <pq@iki.fi> | 2008-10-27 21:21:15 +0200 |
| commit | 89ef1b5483bb234278fe40e193643fc9777f50d4 (patch) | |
| tree | 98ae3141db60155ba578f5e877b8f62ebe5ae6f4 /linux-core/drm_compat.h | |
| parent | 145d2d610b90b6129bbbebd1e1f8c71f9147cbde (diff) | |
drm: missing init_mm symbol, compatibility fix
The drm_compat.c version of kmap_atomic_prot_pfn() uses the macro
pgd_offset_k(), which references the symbol init_mm.
Starting in 2.6.25, init_mm is no longer exported by default.
The only user of kmap_atomic_prot_pfn() is i915, so this should
not hurt anyone, and it allows people to load drm.ko.
Signed-off-by: Pekka Paalanen <pq@iki.fi>
Diffstat (limited to 'linux-core/drm_compat.h')
| -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) |