From: Paul Mundt <lethal@linux-sh.org>
Date: Tue, 27 Oct 2009 08:07:45 +0000 (+0900)
Subject: sh: Bump up dma_ops initialization far earlier in the boot process.
X-Git-Tag: firefly_0821_release~9833^2~3643^2~62^2~48
X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=94c285108e4551157ecc1b8156921712138fa860;p=firefly-linux-kernel-4.4.55.git

sh: Bump up dma_ops initialization far earlier in the boot process.

Presently this was tacked on to the dma debug init bits from
fs_initcall(), which is far too late for devices setting up their own
per-device coherent areas.

Throw this in the beginning of mem_init(), as per the x86 iommu
allocation.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>
---

diff --git a/arch/sh/mm/consistent.c b/arch/sh/mm/consistent.c
index ef20bbabefa0..902967e3f841 100644
--- a/arch/sh/mm/consistent.c
+++ b/arch/sh/mm/consistent.c
@@ -27,8 +27,6 @@ EXPORT_SYMBOL(dma_ops);
 static int __init dma_init(void)
 {
 	dma_debug_init(PREALLOC_DMA_DEBUG_ENTRIES);
-
-	no_iommu_init();
 	return 0;
 }
 fs_initcall(dma_init);
diff --git a/arch/sh/mm/init.c b/arch/sh/mm/init.c
index c8af6c5fa586..432acd07e76a 100644
--- a/arch/sh/mm/init.c
+++ b/arch/sh/mm/init.c
@@ -15,6 +15,7 @@
 #include <linux/pagemap.h>
 #include <linux/percpu.h>
 #include <linux/io.h>
+#include <linux/dma-mapping.h>
 #include <asm/mmu_context.h>
 #include <asm/tlb.h>
 #include <asm/cacheflush.h>
@@ -186,11 +187,21 @@ void __init paging_init(void)
 	set_fixmap_nocache(FIX_UNCACHED, __pa(&__uncached_start));
 }
 
+/*
+ * Early initialization for any I/O MMUs we might have.
+ */
+static void __init iommu_init(void)
+{
+	no_iommu_init();
+}
+
 void __init mem_init(void)
 {
 	int codesize, datasize, initsize;
 	int nid;
 
+	iommu_init();
+
 	num_physpages = 0;
 	high_memory = NULL;