From: Len Brown <lenb@kernel.org>
Date: Thu, 8 Mar 2007 23:28:32 +0000 (-0500)
Subject: [PATCH] ACPI: repair nvidia early quirk breakage on x86_64
X-Git-Tag: v2.6.21-rc4~78
X-Git-Url: http://pilppa.com/gitweb/?a=commitdiff_plain;h=fe69933652562f093ccde600cecf234930c01932;p=linux-2.6-omap-h63xx.git

[PATCH] ACPI: repair nvidia early quirk breakage on x86_64

x86_64 nvidia_bugs() broke when we bailed out on not finding the HPET.
However, the quirk works by checking for _not_ finding the HPET...

Delete the nvidia_hpet_detected flag and simply test for
not finding the HPET, which is simple to do now that
acpi_table_parse returns 1 on failure.

Signed-off-by: Len Brown <len.brown@intel.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---

diff --git a/arch/i386/kernel/acpi/earlyquirk.c b/arch/i386/kernel/acpi/earlyquirk.c
index bf86f7662d8..7fdba8a44c1 100644
--- a/arch/i386/kernel/acpi/earlyquirk.c
+++ b/arch/i386/kernel/acpi/earlyquirk.c
@@ -14,11 +14,8 @@
 
 #ifdef CONFIG_ACPI
 
-static int nvidia_hpet_detected __initdata;
-
 static int __init nvidia_hpet_check(struct acpi_table_header *header)
 {
-	nvidia_hpet_detected = 1;
 	return 0;
 }
 #endif
@@ -29,9 +26,7 @@ static int __init check_bridge(int vendor, int device)
 	/* According to Nvidia all timer overrides are bogus unless HPET
 	   is enabled. */
 	if (!acpi_use_timer_override && vendor == PCI_VENDOR_ID_NVIDIA) {
-		nvidia_hpet_detected = 0;
-		acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check);
-		if (nvidia_hpet_detected == 0) {
+		if (acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check) {
 			acpi_skip_timer_override = 1;
 			  printk(KERN_INFO "Nvidia board "
                        "detected. Ignoring ACPI "
diff --git a/arch/x86_64/kernel/early-quirks.c b/arch/x86_64/kernel/early-quirks.c
index 8047ea8c2ab..dec587b293b 100644
--- a/arch/x86_64/kernel/early-quirks.c
+++ b/arch/x86_64/kernel/early-quirks.c
@@ -30,11 +30,8 @@ static void via_bugs(void)
 
 #ifdef CONFIG_ACPI
 
-static int nvidia_hpet_detected __initdata;
-
 static int __init nvidia_hpet_check(struct acpi_table_header *header)
 {
-	nvidia_hpet_detected = 1;
 	return 0;
 }
 #endif
@@ -52,11 +49,7 @@ static void nvidia_bugs(void)
 	if (acpi_use_timer_override)
 		return;
 
-	nvidia_hpet_detected = 0;
-	if (acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check))
-		return;
-
-	if (nvidia_hpet_detected == 0) {
+	if (acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check)) {
 		acpi_skip_timer_override = 1;
 		printk(KERN_INFO "Nvidia board "
 		       "detected. Ignoring ACPI "