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authorThomas Gleixner <tglx@linutronix.de>2010-10-06 16:05:35 -0400
committerKonrad Rzeszutek Wilk <konrad.wilk@oracle.com>2010-10-18 10:49:33 -0400
commit1525bf0d8f059a38c6e79353583854e1981b2e67 (patch)
treee9ffaebc5f2726dd57c0d427996af033af71ab6c
parent7c94def89aa5091706e03b98047c074d7ac74af0 (diff)
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msi: Introduce default_[teardown|setup]_msi_irqs with fallback.
Introduce an override for the arch_[teardown|setup]_msi_irqs that can be utilized to fallback to the default arch_* code. If a platform wants to utilize the code paths defined in driver/pci/msi.c it has to define HAVE_DEFAULT_MSI_TEARDOWN_IRQS or HAVE_DEFAULT_MSI_SETUP_IRQS. Otherwise the old mechanism of over-ridding the arch_* works fine. Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com> Cc: x86@kernel.org
-rw-r--r--drivers/pci/msi.c14
1 files changed, 12 insertions, 2 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 5fcf5aec680..7c24dcef298 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -35,7 +35,12 @@ int arch_msi_check_device(struct pci_dev *dev, int nvec, int type)
#endif
#ifndef arch_setup_msi_irqs
-int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
+# define arch_setup_msi_irqs default_setup_msi_irqs
+# define HAVE_DEFAULT_MSI_SETUP_IRQS
+#endif
+
+#ifdef HAVE_DEFAULT_MSI_SETUP_IRQS
+int default_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
{
struct msi_desc *entry;
int ret;
@@ -60,7 +65,12 @@ int arch_setup_msi_irqs(struct pci_dev *dev, int nvec, int type)
#endif
#ifndef arch_teardown_msi_irqs
-void arch_teardown_msi_irqs(struct pci_dev *dev)
+# define arch_teardown_msi_irqs default_teardown_msi_irqs
+# define HAVE_DEFAULT_MSI_TEARDOWN_IRQS
+#endif
+
+#ifdef HAVE_DEFAULT_MSI_TEARDOWN_IRQS
+void default_teardown_msi_irqs(struct pci_dev *dev)
{
struct msi_desc *entry;