pci_msi_init_pci_dev and pci_msi_off share a lot of code.
This used to be justified since pci_msi_init_pci_dev
wasn't compiled in when CONFIG_PCI_MSI is off.
Now that it is, let's reuse code.
Signed-off-by: Michael S. Tsirkin <mst@xxxxxxxxxx>
---
drivers/pci/pci.c | 24 +++++-------------------
drivers/pci/probe.c | 11 ++++-------
2 files changed, 9 insertions(+), 26 deletions(-)
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 81f06e8..d5f297a 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -3106,26 +3106,12 @@ EXPORT_SYMBOL_GPL(pci_check_and_unmask_intx);
*/
void pci_msi_off(struct pci_dev *dev)
{
- int pos;
- u16 control;
+ if (dev->msi_cap)
+ pci_msi_set_enable(dev, 0);
- /*
- * This looks like it could go in msi.c, but we need it even when
- * CONFIG_PCI_MSI=n. For the same reason, we can't use
- * dev->msi_cap or dev->msix_cap here.
- */
- pos = pci_find_capability(dev, PCI_CAP_ID_MSI);
- if (pos) {
- pci_read_config_word(dev, pos + PCI_MSI_FLAGS, &control);
- control &= ~PCI_MSI_FLAGS_ENABLE;
- pci_write_config_word(dev, pos + PCI_MSI_FLAGS, control);
- }
- pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
- if (pos) {
- pci_read_config_word(dev, pos + PCI_MSIX_FLAGS, &control);
- control &= ~PCI_MSIX_FLAGS_ENABLE;
- pci_write_config_word(dev, pos + PCI_MSIX_FLAGS, control);
- }
+ dev->msix_cap = pci_find_capability(dev, PCI_CAP_ID_MSIX);
+ if (dev->msix_cap)
+ pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_ENABLE, 0);
}
EXPORT_SYMBOL_GPL(pci_msi_off);
diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c
index 45d6d5c..baf8ddd 100644
--- a/drivers/pci/probe.c
+++ b/drivers/pci/probe.c
@@ -1489,17 +1489,14 @@ static void pci_msi_init_pci_dev(struct pci_dev *dev)
INIT_LIST_HEAD(&dev->msi_list);
#endif
+ dev->msi_cap = pci_find_capability(dev, PCI_CAP_ID_MSI);
+ dev->msix_cap = pci_find_capability(dev, PCI_CAP_ID_MSIX);
+
/* Disable the msi hardware to avoid screaming interrupts
* during boot. This is the power on reset default so
* usually this should be a noop.
*/
- dev->msi_cap = pci_find_capability(dev, PCI_CAP_ID_MSI);
- if (dev->msi_cap)
- pci_msi_set_enable(dev, 0);
-
- dev->msix_cap = pci_find_capability(dev, PCI_CAP_ID_MSIX);
- if (dev->msix_cap)
- pci_msix_clear_and_set_ctrl(dev, PCI_MSIX_FLAGS_ENABLE, 0);
+ pci_msi_off(dev);
}
static void pci_init_capabilities(struct pci_dev *dev)
--
MST
--
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