[PATCH 5/10] __inquire_remote_apic: use safe_apic_wait_icr_idle - i386

[Fernando Luis Vázquez Cao]

__inquire_remote_apic is used for APIC debugging, so use
safe_apic_wait_icr_idle  instead of apic_wait_icr_idle to avoid possible
lockups when APIC delivery fails.

Signed-off-by: Fernando Luis Vazquez Cao <fernando at oss.ntt.co.jp>
---

diff -urNp linux-2.6.21-rc7-orig/arch/i386/kernel/smpboot.c linux-2.6.21-rc7/arch/i386/kernel/smpboot.c
--- linux-2.6.21-rc7-orig/arch/i386/kernel/smpboot.c	2007-04-18 15:49:33.000000000 +0900
+++ linux-2.6.21-rc7/arch/i386/kernel/smpboot.c	2007-04-18 16:36:27.000000000 +0900
@@ -526,7 +526,8 @@ static inline void __inquire_remote_apic
 {
 	int i, regs[] = { APIC_ID >> 4, APIC_LVR >> 4, APIC_SPIV >> 4 };
 	char *names[] = { "ID", "VERSION", "SPIV" };
-	int timeout, status;
+	int timeout;
+	unsigned long status;
 
 	printk("Inquiring remote APIC #%d...\n", apicid);
 
@@ -536,7 +537,9 @@ static inline void __inquire_remote_apic
 		/*
 		 * Wait for idle.
 		 */
-		apic_wait_icr_idle();
+		status = safe_apic_wait_icr_idle();
+		if (status)
+			printk("a previous APIC delivery may have failed\n");
 
 		apic_write_around(APIC_ICR2, SET_APIC_DEST_FIELD(apicid));
 		apic_write_around(APIC_ICR, APIC_DM_REMRD | regs[i]);