From: Jin Qian <jinqian@google.com>
Date: Wed, 30 Sep 2015 01:57:35 +0000 (-0700)
Subject: arm64: pass return address to dma_common_contiguous_remap
X-Git-Tag: firefly_0821_release~2958^2~121
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=97185ece7413071e95ecab25fcb88dcfe2b72b4a;p=firefly-linux-kernel-4.4.55.git

arm64: pass return address to dma_common_contiguous_remap

Added return address to show caller function in /proc/vmallocinfo

Change-Id: Ieb0bbf6ec82b561cea6ff18f0516744050dfc269
---

diff --git a/arch/arm64/mm/dma-mapping.c b/arch/arm64/mm/dma-mapping.c
index 7963aa4b5d28..6ad554b01e95 100644
--- a/arch/arm64/mm/dma-mapping.c
+++ b/arch/arm64/mm/dma-mapping.c
@@ -170,7 +170,7 @@ static void *__dma_alloc(struct device *dev, size_t size,
 	/* create a coherent mapping */
 	page = virt_to_page(ptr);
 	coherent_ptr = dma_common_contiguous_remap(page, size, VM_USERMAP,
-						   prot, NULL);
+						   prot, __builtin_return_address(0));
 	if (!coherent_ptr)
 		goto no_map;