intel-gtt: drop dcache support for i830 and later

i830_check_flags already disallows it, so no need to implement it
in the write_entry function. Seems to be a remnant from i810 support.

Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>
Signed-off-by: Chris Wilson <chris@chris-wilson.co.uk>

diff --git a/drivers/char/agp/intel-gtt.c b/drivers/char/agp/intel-gtt.c
index d2733e5..8a30a16 100644 (file)
--- a/drivers/char/agp/intel-gtt.c
+++ b/drivers/char/agp/intel-gtt.c
@@ -896,14 +896,8 @@ static void i830_write_entry(dma_addr_t addr, unsigned int entry,
 {
        u32 pte_flags = I810_PTE_VALID;
        
-       switch (flags) {
-       case AGP_DCACHE_MEMORY:
-               pte_flags |= I810_PTE_LOCAL;
-               break;
-       case AGP_USER_CACHED_MEMORY:
+       if (flags ==  AGP_USER_CACHED_MEMORY)
                pte_flags |= I830_PTE_SYSTEM_CACHED;
-               break;
-       }
 
        writel(addr | pte_flags, intel_private.gtt + entry);
 }