[PATCH v5 2/5] x86/quirks: Stop using QFLAG_APPLY_ONCE in via_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.

After converting other users, it will allow us to remove all the logic
handling the flags.

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 de9a76eb544e..59cc67aace93 100644
--- a/arch/x86/kernel/early-quirks.c
+++ b/arch/x86/kernel/early-quirks.c
@@ -57,6 +57,13 @@ static void __init fix_hypertransport_config(int num, int slot, int func)
 static void __init via_bugs(int  num, int slot, int func)
 {
 #ifdef CONFIG_GART_IOMMU
+	static bool quirk_applied __initdata;
+
+	if (quirk_applied)
+		return;
+
+	quirk_applied = true;
+
 	if ((max_pfn > MAX_DMA32_PFN ||  force_iommu) &&
 	    !gart_iommu_aperture_allowed) {
 		printk(KERN_INFO
@@ -697,7 +704,7 @@ 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_VENDOR_ID_VIA, PCI_ANY_ID,
-	  PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, QFLAG_APPLY_ONCE, via_bugs },
+	  PCI_CLASS_BRIDGE_PCI, PCI_ANY_ID, 0, via_bugs },
 	{ PCI_VENDOR_ID_AMD, PCI_DEVICE_ID_AMD_K8_NB,
 	  PCI_CLASS_BRIDGE_HOST, PCI_ANY_ID, 0, fix_hypertransport_config },
 	{ PCI_VENDOR_ID_ATI, PCI_DEVICE_ID_ATI_IXP400_SMBUS,
-- 
2.34.1