linux-kernel - [PATCH AUTOSEL 4.20 175/304] ARM: mmp: fix timer

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Message-Id: <20190128154341.47195-175-sashal@kernel.org>
Date:   Mon, 28 Jan 2019 10:41:32 -0500
From:   Sasha Levin <sashal@...nel.org>
To:     linux-kernel@...r.kernel.org, stable@...r.kernel.org
Cc:     Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
        Sasha Levin <sashal@...nel.org>
Subject: [PATCH AUTOSEL 4.20 175/304] ARM: mmp: fix timer_init calls

From: Arnd Bergmann <arnd@...db.de>

[ Upstream commit 12d3a30db4a3b3df5fbadf5974b9cf50544a9950 ]

The change to passing the timer frequency as a function argument
was a good idea, but caused a build failure for one user that
was missed in the update:

arch/arm/mach-mmp/time.c: In function 'mmp_dt_init_timer':
arch/arm/mach-mmp/time.c:242:2: error: implicit declaration of function 'timer_init'; did you mean 'hrtimer_init'? [-Werror=implicit-function-declaration]

Change that as well to fix the build error, and rename the
function to put it into a proper namespace and make it clearer
what is actually going on.

I saw that the high 6500000 HZ frequency was previously only
set with CONFIG_MMP2, but is now also used with MMP (pxa910),
so I'm changing that back here. Please make sure that the
frequencies are all correct now.

Fixes: f36797ee4380 ("ARM: mmp/mmp2: dt: enable the clock")
Signed-off-by: Arnd Bergmann <arnd@...db.de>
Signed-off-by: Olof Johansson <olof@...om.net>
Signed-off-by: Sasha Levin <sashal@...nel.org>
---
 arch/arm/mach-mmp/common.h | 2 +-
 arch/arm/mach-mmp/mmp2.c   | 2 +-
 arch/arm/mach-mmp/pxa168.c | 2 +-
 arch/arm/mach-mmp/pxa910.c | 2 +-
 arch/arm/mach-mmp/time.c   | 4 ++--
 5 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm/mach-mmp/common.h b/arch/arm/mach-mmp/common.h
index 5ac2851ef5d3..483b8b6d3005 100644
--- a/arch/arm/mach-mmp/common.h
+++ b/arch/arm/mach-mmp/common.h
@@ -2,7 +2,7 @@
 #include <linux/reboot.h>
 #define ARRAY_AND_SIZE(x)	(x), ARRAY_SIZE(x)
 
-extern void timer_init(int irq, unsigned long rate);
+extern void mmp_timer_init(int irq, unsigned long rate);
 
 extern void __init mmp_map_io(void);
 extern void mmp_restart(enum reboot_mode, const char *);
diff --git a/arch/arm/mach-mmp/mmp2.c b/arch/arm/mach-mmp/mmp2.c
index fb3e7e32c882..726c1a642dea 100644
--- a/arch/arm/mach-mmp/mmp2.c
+++ b/arch/arm/mach-mmp/mmp2.c
@@ -134,7 +134,7 @@ void __init mmp2_timer_init(void)
 	clk_rst = APBC_APBCLK | APBC_FNCLK | APBC_FNCLKSEL(1);
 	__raw_writel(clk_rst, APBC_TIMERS);
 
-	timer_init(IRQ_MMP2_TIMER1, 6500000);
+	mmp_timer_init(IRQ_MMP2_TIMER1, 6500000);
 }
 
 /* on-chip devices */
diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c
index 77a358165a56..cdcf65ace3f9 100644
--- a/arch/arm/mach-mmp/pxa168.c
+++ b/arch/arm/mach-mmp/pxa168.c
@@ -79,7 +79,7 @@ void __init pxa168_timer_init(void)
 	/* 3.25MHz, bus/functional clock enabled, release reset */
 	__raw_writel(TIMER_CLK_RST, APBC_TIMERS);
 
-	timer_init(IRQ_PXA168_TIMER1, 6500000);
+	mmp_timer_init(IRQ_PXA168_TIMER1, 3250000);
 }
 
 void pxa168_clear_keypad_wakeup(void)
diff --git a/arch/arm/mach-mmp/pxa910.c b/arch/arm/mach-mmp/pxa910.c
index 1ccbba9ac495..d30a7d12bc98 100644
--- a/arch/arm/mach-mmp/pxa910.c
+++ b/arch/arm/mach-mmp/pxa910.c
@@ -116,7 +116,7 @@ void __init pxa910_timer_init(void)
 	__raw_writel(APBC_APBCLK | APBC_RST, APBC_TIMERS);
 	__raw_writel(TIMER_CLK_RST, APBC_TIMERS);
 
-	timer_init(IRQ_PXA910_AP1_TIMER1);
+	mmp_timer_init(IRQ_PXA910_AP1_TIMER1, 3250000);
 }
 
 /* on-chip devices */
diff --git a/arch/arm/mach-mmp/time.c b/arch/arm/mach-mmp/time.c
index eab0fd8a7343..f9c295154b94 100644
--- a/arch/arm/mach-mmp/time.c
+++ b/arch/arm/mach-mmp/time.c
@@ -184,7 +184,7 @@ static struct irqaction timer_irq = {
 	.dev_id		= &ckevt,
 };
 
-void __init timer_init(int irq, unsigned long rate)
+void __init mmp_timer_init(int irq, unsigned long rate)
 {
 	timer_config();
 
@@ -239,7 +239,7 @@ void __init mmp_dt_init_timer(void)
 		ret = -ENOMEM;
 		goto out;
 	}
-	timer_init(irq, rate);
+	mmp_timer_init(irq, rate);
 	return;
 out:
 	pr_err("Failed to get timer from device tree with error:%d\n", ret);
-- 
2.19.1