MSI: Replace pci_msi_quirk with calls to pci_no_msi()

I don't see any reason why we need pci_msi_quirk, quirk code can just
call pci_no_msi() instead.

Remove the check of pci_msi_quirk in msi_init(). This is safe as all
calls to msi_init() are protected by calls to pci_msi_supported(),
which checks pci_msi_enable, which is disabled by pci_no_msi().

The pci_disable_msi routines didn't check pci_msi_quirk, only
pci_msi_enable, but as far as I can see that was a bug not a feature.

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 2 insertions, 5 deletions

diff --git a/drivers/pci/quirks.c b/drivers/pci/quirks.c
index d0c359335077..0d0ba2fad5fc 100644
--- a/drivers/pci/quirks.c
+++ b/drivers/pci/quirks.c
@@ -1700,9 +1700,6 @@ DECLARE_PCI_FIXUP_RESUME(PCI_VENDOR_ID_NVIDIA,  PCI_DEVICE_ID_NVIDIA_CK804_PCIE,
                         quirk_nvidia_ck804_pcie_aer_ext_cap);
 
 #ifdef CONFIG_PCI_MSI
-/* To disable MSI globally */
-int pci_msi_quirk;
-
 /* The Serverworks PCI-X chipset does not support MSI. We cannot easily rely
  * on setting PCI_BUS_FLAGS_NO_MSI in its bus flags because there are actually
  * some other busses controlled by the chipset even if Linux is not aware of it.
@@ -1711,8 +1708,8 @@ int pci_msi_quirk;
  */
 static void __init quirk_svw_msi(struct pci_dev *dev)
 {
-        pci_msi_quirk = 1;
-        printk(KERN_WARNING "PCI: MSI quirk detected. pci_msi_quirk set.\n");
+        pci_no_msi();
+        printk(KERN_WARNING "PCI: MSI quirk detected. MSI deactivated.\n");
 }
 DECLARE_PCI_FIXUP_FINAL(PCI_VENDOR_ID_SERVERWORKS, PCI_DEVICE_ID_SERVERWORKS_GCNB_LE, quirk_svw_msi);