kumquat-buildroot/board/beaglebone/patches/linux/linux-0001-arm-Export-cache-flush-management-symbols-when-MULTI.patch
Hadrien Boutteville 0686dcf7a9 Improve support of OpenGL for BeagleBone Black
Make ti-gfx working on BeagleBone Black by adding an ugly necessary
patch to the kernel wich fix:
pvrsrvkm: Unknown symbol v7_dma_map_area
pvrsrvkm: Unknown symbol v7_dma_flush_range

Add drivers to the default kernel config used in beaglebone_defconfig
to enable the framebuffer.

Signed-off-by: Hadrien Boutteville <hadrien.boutteville@gmail.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
2014-06-08 16:32:20 +02:00

35 lines
1006 B
Diff

From 29885f2f3d700341d322274db6ad085e601c0994 Mon Sep 17 00:00:00 2001
From: Pantelis Antoniou <panto@antoniou-consulting.com>
Date: Fri, 4 Jan 2013 00:32:33 +0200
Subject: [PATCH 3/3] arm: Export cache flush management symbols when
!MULTI_CACHE
When compiling a kernel without CONFIG_MULTI_CACHE enabled the
dma access functions end up not being exported. Fix it.
Signed-off-by: Pantelis Antoniou <panto@antoniou-consulting.com>
---
arch/arm/kernel/setup.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm/kernel/setup.c b/arch/arm/kernel/setup.c
index da1d1aa..dcb678c 100644
--- a/arch/arm/kernel/setup.c
+++ b/arch/arm/kernel/setup.c
@@ -923,3 +923,12 @@ const struct seq_operations cpuinfo_op = {
.stop = c_stop,
.show = c_show
};
+
+/* export the cache management functions */
+#ifndef MULTI_CACHE
+
+EXPORT_SYMBOL(__glue(_CACHE,_dma_map_area));
+EXPORT_SYMBOL(__glue(_CACHE,_dma_unmap_area));
+EXPORT_SYMBOL(__glue(_CACHE,_dma_flush_range));
+
+#endif
--
1.7.10.4