agp/intel: Remove the artificial cap on stolen size

Now that the stolen memory does not also steal entries from the GTT, we
can use all the memory the BIOS set aside for the GPU.
Signed-off-by: NChris Wilson <chris@chris-wilson.co.uk>

drivers/char/agp/intel-gtt.c

@@ -39,9 +39,6 @@
 #define USE_PCI_DMA_API 0
 #endif
 
-/* Max amount of stolen space, anything above will be returned to Linux */
-int intel_max_stolen = 32 * 1024 * 1024;
-
 static const struct aper_size_info_fixed intel_i810_sizes[] =
 {
 	{64, 16384, 4},
@@ -486,7 +483,7 @@ static unsigned int intel_gtt_stolen_entries(void)
 	u8 rdct;
 	int local = 0;
 	static const int ddt[4] = { 0, 16, 32, 64 };
-	unsigned int overhead_entries, stolen_entries;
+	unsigned int overhead_entries;
 	unsigned int stolen_size = 0;
 
 	pci_read_config_word(intel_private.bridge_dev,
@@ -625,12 +622,7 @@ static unsigned int intel_gtt_stolen_entries(void)
 		}
 	}
 
-	if (!local && stolen_size > intel_max_stolen) {
-		dev_info(&intel_private.bridge_dev->dev,
-			 "detected %dK stolen memory, trimming to %dK\n",
-			 stolen_size / KB(1), intel_max_stolen / KB(1));
-		stolen_size = intel_max_stolen;
-	} else if (stolen_size > 0) {
+	if (stolen_size > 0) {
 		dev_info(&intel_private.bridge_dev->dev, "detected %dK %s memory\n",
 		       stolen_size / KB(1), local ? "local" : "stolen");
 	} else {
@@ -639,9 +631,7 @@ static unsigned int intel_gtt_stolen_entries(void)
 		stolen_size = 0;
 	}
 
-	stolen_entries = stolen_size/KB(4) - overhead_entries;
-
-	return stolen_entries;
+	return stolen_size/KB(4) - overhead_entries;
 }
 
 static void i965_adjust_pgetbl_size(unsigned int size_flag)