[PATCHv3 02/11] pci: use weak functions for MSI arch-specific functions

From
Thierry Reding <hidden>
Date
2013-06-20 18:57:08
Also in
linux-pci
Reply to
Thomas Petazzoni, 2013-06-19
On Wed, Jun 19, 2013 at 06:56:10PM +0200, Thomas Petazzoni wrote:
[...]
quoted hunk ↗ jump to hunk
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 2c10752..4bc0c8f 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -30,19 +30,35 @@ static int pci_msi_enable = 1;
 
 /* Arch hooks */
 
-#ifndef arch_msi_check_device
-int arch_msi_check_device(struct pci_dev *dev, int nvec, int type)
+int default_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc)
+{
+	return -EINVAL;
+}
+
+int __weak arch_setup_msi_irq(struct pci_dev *dev, struct msi_desc *desc)
+{
+	return default_setup_msi_irq(dev, desc);
+}
+
+void default_teardown_msi_irq(unsigned int irq)
+{
+}
+
+void __weak arch_teardown_msi_irq(unsigned int irq)
+{
+	return default_teardown_msi_irq(irq);
+}
+
+int default_msi_check_device(struct pci_dev *dev, int nvec, int type)
 {
 	return 0;
 }
-#endif
I don't think keeping the default_*() for these three is necessary,
given that they don't do anything and therefore no architecture is
likely to call them when overriding.

Thierry
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Thread (29 messages) 29 messages, 3 authors, 2013-06-25
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