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authorGregory CLEMENT <gregory.clement@free-electrons.com>2012-10-26 14:30:46 +0200
committerThomas Petazzoni <thomas.petazzoni@free-electrons.com>2012-11-20 15:37:04 +0100
commit53d2f8899f71a1b2ca4788cd74845daa683efb2e (patch)
tree7f07516250fc1c186a24ea955dc2a970f4e0708d /arch/arm/mach-mvebu
parent1611f872513735ac7105535689c0dd668fbf1c04 (diff)
downloadop-kernel-dev-53d2f8899f71a1b2ca4788cd74845daa683efb2e.zip
op-kernel-dev-53d2f8899f71a1b2ca4788cd74845daa683efb2e.tar.gz
arm: mvebu: increase atomic coherent pool size for armada 370/XP
For Armada 370/XP we have the same problem that for the commit cb01b63, so we applied the same solution: "The default 256 KiB coherent pool may be too small for some of the Kirkwood devices, so increase it to make sure that devices will be able to allocate their buffers with GFP_ATOMIC flag" Signed-off-by: Gregory CLEMENT <gregory.clement@free-electrons.com> Acked-by: Marek Szyprowski <m.szyprowski@samsung.com>
Diffstat (limited to 'arch/arm/mach-mvebu')
-rw-r--r--arch/arm/mach-mvebu/armada-370-xp.c12
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/mach-mvebu/armada-370-xp.c b/arch/arm/mach-mvebu/armada-370-xp.c
index 3292d6d..cd6eac1 100644
--- a/arch/arm/mach-mvebu/armada-370-xp.c
+++ b/arch/arm/mach-mvebu/armada-370-xp.c
@@ -18,6 +18,7 @@
#include <linux/io.h>
#include <linux/time-armada-370-xp.h>
#include <linux/clk/mvebu.h>
+#include <linux/dma-mapping.h>
#include <asm/mach/arch.h>
#include <asm/mach/map.h>
#include <asm/mach/time.h>
@@ -44,6 +45,16 @@ void __init armada_370_xp_timer_and_clk_init(void)
armada_370_xp_timer_init();
}
+void __init armada_370_xp_init_early(void)
+{
+ /*
+ * Some Armada 370/XP devices allocate their coherent buffers
+ * from atomic context. Increase size of atomic coherent pool
+ * to make sure such the allocations won't fail.
+ */
+ init_dma_coherent_pool_size(SZ_1M);
+}
+
struct sys_timer armada_370_xp_timer = {
.init = armada_370_xp_timer_and_clk_init,
};
@@ -62,6 +73,7 @@ static const char * const armada_370_xp_dt_board_dt_compat[] = {
DT_MACHINE_START(ARMADA_XP_DT, "Marvell Aramada 370/XP (Device Tree)")
.init_machine = armada_370_xp_dt_init,
.map_io = armada_370_xp_map_io,
+ .init_early = armada_370_xp_init_early,
.init_irq = armada_370_xp_init_irq,
.handle_irq = armada_370_xp_handle_irq,
.timer = &armada_370_xp_timer,
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