linux-kernel - [PATCH 2/2] x86/apic: Convert APIC_INTEGRATED to lapic_is

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Date:   Thu, 7 Sep 2017 16:49:21 +0800
From:   Dou Liyang <douly.fnst@...fujitsu.com>
To:     <x86@...nel.org>, <linux-kernel@...r.kernel.org>
CC:     <tglx@...utronix.de>, <mingo@...nel.org>, <hpa@...or.com>,
        <bhe@...hat.com>, Dou Liyang <douly.fnst@...fujitsu.com>
Subject: [PATCH 2/2] x86/apic: Convert APIC_INTEGRATED to lapic_is_integrated() in apic.c

Currently, lapic_is_integrated() encapsulates APIC_INTEGRATED() in
apic.c for a concise call.

But lapic_get_maxlvt() is overlooked.

Convert to lapic_is_integrated() and fix two code formats.

No functionality change

Signed-off-by: Dou Liyang <douly.fnst@...fujitsu.com>
---
 arch/x86/kernel/apic/apic.c | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 63b3ae9..b81ebbf 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -294,14 +294,11 @@ int get_physical_broadcast(void)
  */
 int lapic_get_maxlvt(void)
 {
-	unsigned int v;
-
-	v = apic_read(APIC_LVR);
 	/*
 	 * - we always have APIC integrated on 64bit mode
 	 * - 82489DXs do not report # of LVT entries
 	 */
-	return APIC_INTEGRATED(GET_APIC_VERSION(v)) ? GET_APIC_MAXLVT(v) : 2;
+	return lapic_is_integrated(void) ? GET_APIC_MAXLVT(v) : 2;
 }
 
 /*
@@ -1256,7 +1253,9 @@ void __init init_bsp_APIC(void)
 	 */
 	apic_write(APIC_LVT0, APIC_DM_EXTINT);
 	value = APIC_DM_NMI;
-	if (!lapic_is_integrated())		/* 82489DX */
+
+	/* Is 82489DX ? */
+	if (!lapic_is_integrated())
 		value |= APIC_LVT_LEVEL_TRIGGER;
 	if (apic_extnmi == APIC_EXTNMI_NONE)
 		value |= APIC_LVT_MASKED;
@@ -1484,7 +1483,9 @@ void setup_local_APIC(void)
 		value = APIC_DM_NMI;
 	else
 		value = APIC_DM_NMI | APIC_LVT_MASKED;
-	if (!lapic_is_integrated())		/* 82489DX */
+
+	/* Is 82489DX ? */
+	if (!lapic_is_integrated())
 		value |= APIC_LVT_LEVEL_TRIGGER;
 	apic_write(APIC_LVT1, value);
 
-- 
2.5.5