The driver calls pci_enable_msi_range() function with the
range of [nvec..nvec] which what pci_enable_msi_exact()
function is for.

Signed-off-by: Alexander Gordeev <agord...@redhat.com>
Cc: linux-...@vger.kernel.org
---
 drivers/ata/ahci.c |    8 ++++----
 1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c
index 838d97e..01c5541 100644
--- a/drivers/ata/ahci.c
+++ b/drivers/ata/ahci.c
@@ -1174,7 +1174,7 @@ static int ahci_is_mrsm(struct ahci_host_priv *hpriv)
 static int ahci_init_interrupts(struct pci_dev *pdev, unsigned int n_ports,
                         struct ahci_host_priv *hpriv)
 {
-       int nvec;
+       int rc, nvec;
 
        if (hpriv->flags & AHCI_HFLAG_NO_MSI)
                goto intx;
@@ -1191,10 +1191,10 @@ static int ahci_init_interrupts(struct pci_dev *pdev, 
unsigned int n_ports,
        if (nvec < n_ports)
                goto single_msi;
 
-       nvec = pci_enable_msi_range(pdev, nvec, nvec);
-       if (nvec == -ENOSPC)
+       rc = pci_enable_msi_exact(pdev, nvec);
+       if (rc == -ENOSPC)
                goto single_msi;
-       else if (nvec < 0)
+       else if (rc < 0)
                goto intx;
 
        /*
-- 
1.7.7.6

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