From: Daniel Vetter <daniel.vetter@ffwll.ch>
Date: Thu, 4 Nov 2010 17:41:50 +0000 (+0100)
Subject: intel-gtt: drop dcache support for i830 and later
X-Git-Tag: firefly_0821_release~7613^2~3065^2~23^2~88
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=b47cf66f315a258c458ed4345c443dba396fb787;p=firefly-linux-kernel-4.4.55.git

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 d2733e526a68..8a30a16c5706 100644
--- 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);
 }