From: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Date: Wed, 28 Feb 2007 16:53:13 +0000 (+0900)
Subject: [MIPS] No need to write c0_compare in plat_timer_setup
X-Git-Tag: v2.6.21-rc3~103^2~10
X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=12e4396bf0b1cd62c9d71a06596914c7efa7dbaf;p=linux-2.6

[MIPS] No need to write c0_compare in plat_timer_setup

If R4k counter was used for hpt_timer and interrupt source,
c0_hpt_timer_init() initializes the c0_compare register.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
---

diff --git a/arch/mips/lasat/setup.c b/arch/mips/lasat/setup.c
index 14c55168f1..b27b47cd6f 100644
--- a/arch/mips/lasat/setup.c
+++ b/arch/mips/lasat/setup.c
@@ -116,7 +116,6 @@ static void lasat_time_init(void)
 
 void __init plat_timer_setup(struct irqaction *irq)
 {
-	write_c0_compare( read_c0_count() + mips_hpt_frequency / HZ);
 	change_c0_status(ST0_IM, IE_IRQ0 | IE_IRQ5);
 }
 
diff --git a/arch/mips/mips-boards/generic/time.c b/arch/mips/mips-boards/generic/time.c
index a3c3a1d462..df2a2bd3aa 100644
--- a/arch/mips/mips-boards/generic/time.c
+++ b/arch/mips/mips-boards/generic/time.c
@@ -295,7 +295,4 @@ void __init plat_timer_setup(struct irqaction *irq)
 	irq_desc[mips_cpu_timer_irq].status |= IRQ_PER_CPU;
 	set_irq_handler(mips_cpu_timer_irq, handle_percpu_irq);
 #endif
-
-        /* to generate the first timer interrupt */
-	write_c0_compare (read_c0_count() + mips_hpt_frequency/HZ);
 }
diff --git a/arch/mips/mips-boards/sim/sim_time.c b/arch/mips/mips-boards/sim/sim_time.c
index 30711d016f..d3a21c7415 100644
--- a/arch/mips/mips-boards/sim/sim_time.c
+++ b/arch/mips/mips-boards/sim/sim_time.c
@@ -199,7 +199,4 @@ void __init plat_timer_setup(struct irqaction *irq)
 	irq_desc[mips_cpu_timer_irq].flags |= IRQ_PER_CPU;
 	set_irq_handler(mips_cpu_timer_irq, handle_percpu_irq);
 #endif
-
-	/* to generate the first timer interrupt */
-	write_c0_compare(read_c0_count() + (mips_hpt_frequency/HZ));
 }
diff --git a/arch/mips/tx4927/common/tx4927_setup.c b/arch/mips/tx4927/common/tx4927_setup.c
index 941c441729..c8e49feb34 100644
--- a/arch/mips/tx4927/common/tx4927_setup.c
+++ b/arch/mips/tx4927/common/tx4927_setup.c
@@ -81,18 +81,8 @@ void __init tx4927_time_init(void)
 
 void __init plat_timer_setup(struct irqaction *irq)
 {
-	u32 count;
-	u32 c1;
-	u32 c2;
-
 	setup_irq(TX4927_IRQ_CPU_TIMER, irq);
 
-	/* to generate the first timer interrupt */
-	c1 = read_c0_count();
-	count = c1 + (mips_hpt_frequency / HZ);
-	write_c0_compare(count);
-	c2 = read_c0_count();
-
 #ifdef CONFIG_TOSHIBA_RBTX4927
 	{
 		extern void toshiba_rbtx4927_timer_setup(struct irqaction
diff --git a/arch/mips/tx4938/common/setup.c b/arch/mips/tx4938/common/setup.c
index dc87d92bb0..142abf453e 100644
--- a/arch/mips/tx4938/common/setup.c
+++ b/arch/mips/tx4938/common/setup.c
@@ -55,14 +55,5 @@ tx4938_time_init(void)
 
 void __init plat_timer_setup(struct irqaction *irq)
 {
-	u32 count;
-	u32 c1;
-	u32 c2;
-
 	setup_irq(TX4938_IRQ_CPU_TIMER, irq);
-
-	c1 = read_c0_count();
-	count = c1 + (mips_hpt_frequency / HZ);
-	write_c0_compare(count);
-	c2 = read_c0_count();
 }