ACPI: prevent ACPI quirk warning mass spamming in logs

The following patch prevent this warning to be displayed again & again (eg:
nine times on my NForce2 motherboard) and thus improve signal to noise
ratio in logs.

The ATI quirk below probably needs a similar "fix" but I don't have
the hardware to test.

Btw arch/x86_64/kernel/early-quirks.c::nvidia_bugs() would probably need to
be synced (but I don't have an x86_64 NVidia motherboard to boot test it).
Still it shows the usefullity of the recent x86 merge thread.

[akpm@linux-foundation.org: cleanup]
Signed-off-by: Thierry Vignaud <tvignaud@mandriva.com>
Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Len Brown <len.brown@intel.com>

1 files changed, 4 insertions, 1 deletions

diff --git a/arch/i386/kernel/acpi/earlyquirk.c b/arch/i386/kernel/acpi/earlyquirk.c
index a7d22d9f3d7e..fa3255afc0f6 100644
--- a/arch/i386/kernel/acpi/earlyquirk.c
+++ b/arch/i386/kernel/acpi/earlyquirk.c
@@ -22,11 +22,14 @@ static int __init nvidia_hpet_check(struct acpi_table_header *header)
 
 static int __init check_bridge(int vendor, int device)
 {
+        static int warned;
 #ifdef CONFIG_ACPI
         /* According to Nvidia all timer overrides are bogus unless HPET
            is enabled. */
         if (!acpi_use_timer_override && vendor == PCI_VENDOR_ID_NVIDIA) {
-                if (acpi_table_parse(ACPI_SIG_HPET, nvidia_hpet_check)) {
+                if (!warned && acpi_table_parse(ACPI_SIG_HPET,
+                                                nvidia_hpet_check)) {
+                        warned = 1;
                         acpi_skip_timer_override = 1;
                           printk(KERN_INFO "Nvidia board "
                        "detected. Ignoring ACPI "