summaryrefslogtreecommitdiffstats
path: root/arch/arm/lib
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/lib')
-rw-r--r--arch/arm/lib/Makefile2
-rw-r--r--arch/arm/lib/backtrace.S2
-rw-r--r--arch/arm/lib/copy_template.S2
-rw-r--r--arch/arm/lib/delay.S20
-rw-r--r--arch/arm/lib/io-acorn.S1
5 files changed, 15 insertions, 12 deletions
diff --git a/arch/arm/lib/Makefile b/arch/arm/lib/Makefile
index 391f3ab3ff32..7b726b627ea5 100644
--- a/arch/arm/lib/Makefile
+++ b/arch/arm/lib/Makefile
@@ -18,7 +18,7 @@ lib-y := backtrace.o changebit.o csumipv6.o csumpartial.o \
# the code in uaccess.S is not preemption safe and
# probably faster on ARMv3 only
-ifeq ($CONFIG_PREEMPT,y)
+ifeq ($(CONFIG_PREEMPT),y)
lib-y += copy_from_user.o copy_to_user.o
else
ifneq ($(CONFIG_CPU_32v3),y)
diff --git a/arch/arm/lib/backtrace.S b/arch/arm/lib/backtrace.S
index 68a21c0f3f52..3bdc8c6949c5 100644
--- a/arch/arm/lib/backtrace.S
+++ b/arch/arm/lib/backtrace.S
@@ -29,7 +29,7 @@ ENTRY(__backtrace)
ENTRY(c_backtrace)
-#ifndef CONFIG_FRAME_POINTER
+#if !defined(CONFIG_FRAME_POINTER) || !defined(CONFIG_PRINTK)
mov pc, lr
#else
diff --git a/arch/arm/lib/copy_template.S b/arch/arm/lib/copy_template.S
index 838e435e4922..cab355c0c1f7 100644
--- a/arch/arm/lib/copy_template.S
+++ b/arch/arm/lib/copy_template.S
@@ -236,7 +236,7 @@
/*
- * Abort preanble and completion macros.
+ * Abort preamble and completion macros.
* If a fixup handler is required then those macros must surround it.
* It is assumed that the fixup code will handle the private part of
* the exit macro.
diff --git a/arch/arm/lib/delay.S b/arch/arm/lib/delay.S
index b3fb475b4120..9183b06c0e2f 100644
--- a/arch/arm/lib/delay.S
+++ b/arch/arm/lib/delay.S
@@ -9,28 +9,32 @@
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
+#include <asm/param.h>
.text
.LC0: .word loops_per_jiffy
+.LC1: .word (2199023*HZ)>>11
/*
- * 0 <= r0 <= 2000
+ * r0 <= 2000
+ * lpj <= 0x01ffffff (max. 3355 bogomips)
+ * HZ <= 1000
*/
+
ENTRY(__udelay)
- mov r2, #0x6800
- orr r2, r2, #0x00db
+ ldr r2, .LC1
mul r0, r2, r0
-ENTRY(__const_udelay) @ 0 <= r0 <= 0x01ffffff
+ENTRY(__const_udelay) @ 0 <= r0 <= 0x7fffff06
ldr r2, .LC0
- ldr r2, [r2] @ max = 0x0fffffff
- mov r0, r0, lsr #11 @ max = 0x00003fff
- mov r2, r2, lsr #11 @ max = 0x0003ffff
+ ldr r2, [r2] @ max = 0x01ffffff
+ mov r0, r0, lsr #14 @ max = 0x0001ffff
+ mov r2, r2, lsr #10 @ max = 0x00007fff
mul r0, r2, r0 @ max = 2^32-1
movs r0, r0, lsr #6
RETINSTR(moveq,pc,lr)
/*
- * loops = (r0 * 0x10c6 * 100 * loops_per_jiffy) / 2^32
+ * loops = r0 * HZ * loops_per_jiffy / 1000000
*
* Oh, if only we had a cycle counter...
*/
diff --git a/arch/arm/lib/io-acorn.S b/arch/arm/lib/io-acorn.S
index b153523631c3..1b197ea7aab3 100644
--- a/arch/arm/lib/io-acorn.S
+++ b/arch/arm/lib/io-acorn.S
@@ -12,7 +12,6 @@
*/
#include <linux/linkage.h>
#include <asm/assembler.h>
-#include <asm/hardware.h>
.text
.align