[PATCH v5 3/5] x86/quirks: Stop using QFLAG_APPLY_ONCE in nvidia_bugs()

[Lucas De Marchi <lucas.demarchi@intel.com>]

Adopt the same approach as in intel_graphics_quirks(), with a static
local variable, to control when the quirk has already been applied.
However, contrary to intel_graphics_quirks(), here we always set it as
applied as soon as it's called to avoid changing the current behavior
that is not failing.

This is the last user of the flags, so we can cleanup the early-quirks,
removing all the flags logic later.

Signed-off-by: Lucas De Marchi <lucas.demarchi@intel.com>
---
 arch/x86/kernel/early-quirks.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/arch/x86/kernel/early-quirks.c b/arch/x86/kernel/early-quirks.c
index 59cc67aace93..7c70977737de 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -88,6 +88,13 @@ static void __init nvidia_bugs(int num, int slot, int func)
 {
 #ifdef CONFIG_ACPI
 #ifdef CONFIG_X86_IO_APIC
+	static bool quirk_applied __initdata;
+
+	if (quirk_applied)
+		return;
+
+	quirk_applied = true;
+
 	/*
 	 * Only applies to Nvidia root ports (bus 0) and not to
 	 * Nvidia graphics cards with PCI ports on secondary buses.
@@ -702,7 +709,7 @@ struct chipset {
 
 static struct chipset early_qrk[] __initdata = {
 	{ PCI_VENDOR_ID_NVIDIA, PCI_ANY_ID,
-	  PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, nvidia_bugs },
+	  PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, 0, nvidia_bugs },
 	{ PCI_VENDOR_ID_VIA, PCI_ANY_ID,
 	  PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, 0, via_bugs },
 	{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB,
-- 
2.34.1