Re: radeon.ko compilation error on 2.6.25-rc3

[Zhenyu Wang]

On 2008.03.06 02:49:10 +0000, Alec Robertson wrote:
> The latest git drm doesn't compile on 2.6.25-rc3 as flush_agp_mappings has 
> been
> removed: http://lwn.net/Articles/267135/
> 
> The error message:
> /usr/local/src/drm/linux-core/drm_ttm.c:134: error: implicit declaration of
> function 'flush_agp_mappings'
> make[3]: *** [/usr/local/src/drm/linux-core/drm_ttm.o] Error 1
> make[2]: *** [_module_/usr/local/src/drm/linux-core] Error 2
> make[1]: *** [modules] Error 2
> make: *** [radeon.o] Error 2
> 
> After commenting out line 132 and compiling, the kernel modules load fine and 
> X
> seems to work OK.

Here's the compat patch.
---
diff --git a/linux-core/drm_compat.h b/linux-core/drm_compat.h
index 136a729..4d0dc83 100644
--- a/linux-core/drm_compat.h
+++ b/linux-core/drm_compat.h
@@ -212,6 +212,10 @@ extern int drm_map_page_into_agp(struct page *page);
 #define unmap_page_from_agp drm_unmap_page_from_agp
 #endif
 
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(2,6,25))
+#define flush_agp_mappings()   do {} while (0)
+#endif
+
 #if (LINUX_VERSION_CODE < KERNEL_VERSION(2,6,15))
 extern struct page *get_nopage_retry(void);
 extern void free_nopage_retry(void);
---

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