The patch introduces additional parameter to msix_capability_init()
so that we can pass the address of MSI-X capability structure to
the function.
Signed-off-by: Gavin Shan <shangw@xxxxxxxxxxxxxxxxxx>
---
drivers/pci/msi.c | 10 ++++++----
1 files changed, 6 insertions(+), 4 deletions(-)
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c
index 7ba9461..a20cb0a 100644
--- a/drivers/pci/msi.c
+++ b/drivers/pci/msi.c
@@ -674,19 +674,20 @@ static void msix_program_entries(struct pci_dev *dev,
* @dev: pointer to the pci_dev data structure of MSI-X device function
* @entries: pointer to an array of struct msix_entry entries
* @nvec: number of @entries
+ * @pos: address of MSI-X capability structure
*
* Setup the MSI-X capability structure of device function with a
* single MSI-X irq. A return of zero indicates the successful setup of
* requested MSI-X entries with allocated irqs or non-zero for otherwise.
**/
static int msix_capability_init(struct pci_dev *dev,
- struct msix_entry *entries, int nvec)
+ struct msix_entry *entries,
+ int nvec, int pos)
{
- int pos, ret;
+ int ret;
u16 control;
void __iomem *base;
- pos = pci_find_capability(dev, PCI_CAP_ID_MSIX);
pci_read_config_word(dev, pos + PCI_MSIX_FLAGS, &control);
/* Ensure MSI-X is disabled while it is set up */
@@ -980,7 +981,8 @@ int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec)
"(MSI IRQ already assigned)\n");
return -EINVAL;
}
- status = msix_capability_init(dev, entries, nvec);
+
+ status = msix_capability_init(dev, entries, nvec, pos);
return status;
}
EXPORT_SYMBOL(pci_enable_msix);
--
1.7.5.4
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