[tip: irq/msi] PCI/MSI: Use msi_get_virq() in pci_get_vector()

tip-bot2 for Thomas Gleixner
2021-12-16T21:42:12Z

The following commit has been merged into the irq/msi branch of tip:

Commit-ID: 82ff8e6b78fc4587a4255301f0a283506daf11b6
Gitweb: https://git.kernel.org/tip/82ff8e6b78fc4587a4255301f0a283506daf11b6
Author: Thomas Gleixner <tglx@linutronix.de>
AuthorDate: Fri, 10 Dec 2021 23:19:25 +01:00
Committer: Thomas Gleixner <tglx@linutronix.de>
CommitterDate: Thu, 16 Dec 2021 22:16:41 +01:00

PCI/MSI: Use msi_get_virq() in pci_get_vector()

Use msi_get_vector() and handle the return value to be compatible.

No functional change intended.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mikelley@microsoft.com>
Tested-by: Nishanth Menon <nm@ti.com>
Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Reviewed-by: Jason Gunthorpe <jgg@nvidia.com>
Link: https://lore.kernel.org/r/20211210221814.841243231@linutronix.de

---
drivers/pci/msi/msi.c | 25 +++++--------------------
1 file changed, 5 insertions(+), 20 deletions(-)

diff --git a/drivers/pci/msi/msi.c b/drivers/pci/msi/msi.c
index 8fb4dd2..fad3873 100644
--- a/drivers/pci/msi/msi.c
+++ b/drivers/pci/msi/msi.c
@@ -1080,28 +1080,13 @@ EXPORT_SYMBOL(pci_free_irq_vectors);
*/
int pci_irq_vector(struct pci_dev *dev, unsigned int nr)
{
- if (dev->msix_enabled) {
- struct msi_desc *entry;
-
- for_each_pci_msi_entry(entry, dev) {
- if (entry->msi_index == nr)
- return entry->irq;
- }
- WARN_ON_ONCE(1);
- return -EINVAL;
- }
+ unsigned int irq;

- if (dev->msi_enabled) {
- struct msi_desc *entry = first_pci_msi_entry(dev);
-
- if (WARN_ON_ONCE(nr >= entry->nvec_used))
- return -EINVAL;
- } else {
- if (WARN_ON_ONCE(nr > 0))
- return -EINVAL;
- }
+ if (!dev->msi_enabled && !dev->msix_enabled)
+ return !nr ? dev->irq : -EINVAL;

- return dev->irq + nr;
+ irq = msi_get_virq(&dev->dev, nr);
+ return irq ? irq : -EINVAL;
}
EXPORT_SYMBOL(pci_irq_vector);