* [PATCH] ARM: pxa: remove unnecessary pxa3xx io mapping
@ 2014-07-04 12:43 Haojian Zhuang
0 siblings, 0 replies; only message in thread
From: Haojian Zhuang @ 2014-07-04 12:43 UTC (permalink / raw)
To: linux-arm-kernel
[ 0.000000] BUG: mapping for 0x00000000 at 0xff000000 out of vmalloc
space
UNCACHED PHYS io mapping is redundant of PXA3xx (PXA930). So remove it
from pxa3xx/pxa93x series.
Signed-off-by: Haojian Zhuang <haojian.zhuang@linaro.org>
---
arch/arm/mach-pxa/generic.c | 8 +++++++-
1 file changed, 7 insertions(+), 1 deletion(-)
diff --git a/arch/arm/mach-pxa/generic.c b/arch/arm/mach-pxa/generic.c
index 94f49c2..b52f8f2 100644
--- a/arch/arm/mach-pxa/generic.c
+++ b/arch/arm/mach-pxa/generic.c
@@ -83,7 +83,11 @@ static struct map_desc common_io_desc[] __initdata = {
.pfn = __phys_to_pfn(0x40000000),
.length = 0x02000000,
.type = MT_DEVICE
- }, { /* UNCACHED_PHYS_0 */
+ }
+};
+
+static struct map_desc pxa2xx_io_desc[] __initdata = {
+ { /* UNCACHED_PHYS_0 */
.virtual = 0xff000000,
.pfn = __phys_to_pfn(0x00000000),
.length = 0x00100000,
@@ -95,4 +99,6 @@ void __init pxa_map_io(void)
{
debug_ll_io_init();
iotable_init(ARRAY_AND_SIZE(common_io_desc));
+ if (cpu_is_pxa2xx())
+ iotable_init(ARRAY_AND_SIZE(pxa2xx_io_desc));
}
--
1.9.1
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