linux-kernel - [patch 29/29] x86/hpet: Use channel for legacy clockevent storage

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Message-Id: <20190623132436.737689919@linutronix.de>
Date:   Sun, 23 Jun 2019 15:24:09 +0200
From:   Thomas Gleixner <tglx@...utronix.de>
To:     LKML <linux-kernel@...r.kernel.org>
Cc:     x86@...nel.org, Peter Zijlstra <peterz@...radead.org>,
        Ricardo Neri <ricardo.neri-calderon@...ux.intel.com>,
        Ashok Raj <ashok.raj@...el.com>,
        Andi Kleen <andi.kleen@...el.com>,
        Suravee Suthikulpanit <Suravee.Suthikulpanit@....com>,
        Stephane Eranian <eranian@...gle.com>,
        Ravi Shankar <ravi.v.shankar@...el.com>
Subject: [patch 29/29] x86/hpet: Use channel for legacy clockevent storage

All preparations are done. Use the channel storage for the legacy
clockevent and remove the static variable.

Signed-off-by: Thomas Gleixner <tglx@...utronix.de>
---
 arch/x86/kernel/hpet.c |   11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)

--- a/arch/x86/kernel/hpet.c
+++ b/arch/x86/kernel/hpet.c
@@ -66,11 +66,6 @@ bool					boot_hpet_disable;
 bool					hpet_force_user;
 static bool				hpet_verbose;
 
-/*
- * The HPET clock event device wrapped in a channel for conversion
- */
-static struct hpet_channel		hpet_channel0;
-
 static inline
 struct hpet_channel *clockevent_to_channel(struct clock_event_device *evt)
 {
@@ -903,7 +898,7 @@ int __init hpet_enable(void)
 	clocksource_register_hz(&clocksource_hpet, (u32)hpet_freq);
 
 	if (id & HPET_ID_LEGSUP) {
-		hpet_legacy_clockevent_register(&hpet_channel0);
+		hpet_legacy_clockevent_register(&hpet_base.channels[0]);
 		hpet_base.channels[0].mode = HPET_MODE_LEGACY;
 		if (IS_ENABLED(CONFIG_HPET_EMULATE_RTC))
 			hpet_base.channels[1].mode = HPET_MODE_LEGACY;
@@ -1088,7 +1083,7 @@ int hpet_rtc_timer_init(void)
 		return 0;
 
 	if (!hpet_default_delta) {
-		struct clock_event_device *evt = &hpet_channel0.evt;
+		struct clock_event_device *evt = &hpet_base.channels[0].evt;
 		uint64_t clc;
 
 		clc = (uint64_t) evt->mult * NSEC_PER_SEC;
@@ -1186,7 +1181,7 @@ int hpet_set_periodic_freq(unsigned long
 	if (freq <= DEFAULT_RTC_INT_FREQ) {
 		hpet_pie_limit = DEFAULT_RTC_INT_FREQ / freq;
 	} else {
-		struct clock_event_device *evt = &hpet_channel0.evt;
+		struct clock_event_device *evt = &hpet_base.channels[0].evt;
 
 		clc = (uint64_t) evt->mult * NSEC_PER_SEC;
 		do_div(clc, freq);