diff options
Diffstat (limited to 'linux-core/drm_compat.h')
| -rw-r--r-- | linux-core/drm_compat.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/linux-core/drm_compat.h b/linux-core/drm_compat.h index 88c5bb1d..585350f4 100644 --- a/linux-core/drm_compat.h +++ b/linux-core/drm_compat.h @@ -357,9 +357,24 @@ static inline int kobject_uevent_env(struct kobject *kobj, #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) @@ -409,4 +424,17 @@ extern struct page *drm_vm_sg_nopage(struct vm_area_struct *vma, #endif #endif +#if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,27)) +#define set_page_locked SetPageLocked +#elif (LINUX_VERSION_CODE > KERNEL_VERSION(2,6,27)) +/* + * The kernel provides __set_page_locked, which uses the non-atomic + * __set_bit function. Let's use the atomic set_bit just in case. + */ +static inline void set_page_locked(struct page *page) +{ + set_bit(PG_locked, &page->flags); +} +#endif + #endif |