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From: mark.rutland@arm.com (Mark Rutland)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCHv2 02/11] arm: arch_timer: remove redundant available check
Date: Wed, 19 Dec 2012 15:11:01 +0000	[thread overview]
Message-ID: <1355929870-30252-3-git-send-email-mark.rutland@arm.com> (raw)
In-Reply-To: <1355929870-30252-1-git-send-email-mark.rutland@arm.com>

This check is a holdover from the pre-devicetree days. As the timer
is not probed except by platforms which register it via devicetree,
it's not strictly necessary.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Acked-by: Marc Zyngier <marc.zyngier@arm.com>
---
 arch/arm/kernel/arch_timer.c |   12 ------------
 1 files changed, 0 insertions(+), 12 deletions(-)

diff --git a/arch/arm/kernel/arch_timer.c b/arch/arm/kernel/arch_timer.c
index 6dd73c6..1bb3b58 100644
--- a/arch/arm/kernel/arch_timer.c
+++ b/arch/arm/kernel/arch_timer.c
@@ -20,11 +20,9 @@
 #include <linux/of_irq.h>
 #include <linux/io.h>
 
-#include <asm/cputype.h>
 #include <asm/delay.h>
 #include <asm/localtimer.h>
 #include <asm/arch_timer.h>
-#include <asm/system_info.h>
 #include <asm/sched_clock.h>
 
 static unsigned long arch_timer_rate;
@@ -259,20 +257,10 @@ static int __cpuinit arch_timer_setup(struct clock_event_device *clk)
 	return 0;
 }
 
-/* Is the optional system timer available? */
-static int local_timer_is_architected(void)
-{
-	return (cpu_architecture() >= CPU_ARCH_ARMv7) &&
-	       ((read_cpuid_ext(CPUID_EXT_PFR1) >> 16) & 0xf) == 1;
-}
-
 static int arch_timer_available(void)
 {
 	unsigned long freq;
 
-	if (!local_timer_is_architected())
-		return -ENXIO;
-
 	if (arch_timer_rate == 0) {
 		freq = arch_timer_reg_read(ARCH_TIMER_PHYS_ACCESS,
 					   ARCH_TIMER_REG_FREQ);
-- 
1.7.0.4

  parent reply	other threads:[~2012-12-19 15:11 UTC|newest]

Thread overview: 15+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-12-19 15:10 [PATCHv2 00/11] Unify arm_generic and arch_timer drivers Mark Rutland
2012-12-19 15:11 ` [PATCHv2 01/11] arm: arch_timer: balance device_node refcounting Mark Rutland
2012-12-19 15:11 ` Mark Rutland [this message]
2012-12-19 15:11 ` [PATCHv2 03/11] arm: arch_timer: use u64/u32 for register data Mark Rutland
2012-12-19 15:11 ` [PATCHv2 04/11] arm: arch_timer: standardise counter reading Mark Rutland
2012-12-19 15:11 ` [PATCHv2 05/11] arm: arch_timer: split cntfrq accessor Mark Rutland
2012-12-19 15:11 ` [PATCHv2 06/11] arm: arch_timer: factor out register accessors Mark Rutland
2012-12-19 15:11 ` [PATCHv2 07/11] arm: arch_timer: divorce from local_timer api Mark Rutland
2012-12-19 15:11 ` [PATCHv2 08/11] arm: arch_timer: add arch_counter_set_user_access Mark Rutland
2012-12-19 15:11 ` [PATCHv2 09/11] arm: arch_timer: move core to drivers/clocksource Mark Rutland
2012-12-19 15:11 ` [PATCHv2 10/11] arm64: move from arm_generic to arm_arch_timer Mark Rutland
2012-12-19 15:11 ` [PATCHv2 11/11] Documentation: Add ARMv8 to arch_timer devicetree Mark Rutland
  -- strict thread matches above, loose matches on Subject: below --
2013-01-09 16:07 [PATCHv3 00/11] Unify arm_generic and arch_timer drivers Mark Rutland
2013-01-09 16:07 ` [PATCHv2 02/11] arm: arch_timer: remove redundant available check Mark Rutland
2013-01-11 13:11   ` Santosh Shilimkar
2013-01-11 14:07     ` Mark Rutland

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