diff options
Diffstat (limited to 'drivers/pci/msi.c')
| -rw-r--r-- | drivers/pci/msi.c | 27 |
1 files changed, 10 insertions, 17 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index db21b77a03a5..338b027ea65f 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -810,7 +810,10 @@ static int pci_msi_check_device(struct pci_dev *dev, int nvec) struct pci_bus *bus; /* MSI must be globally enabled and supported by the device */ - if (!pci_msi_enable || !dev || dev->no_msi) + if (!pci_msi_enable) + return -EINVAL; + + if (!dev || dev->no_msi || dev->current_state != PCI_D0) return -EINVAL; /* @@ -934,13 +937,13 @@ int pci_enable_msix(struct pci_dev *dev, struct msix_entry *entries, int nvec) int status, nr_entries; int i, j; - if (!entries || !dev->msix_cap || dev->current_state != PCI_D0) - return -EINVAL; - status = pci_msi_check_device(dev, nvec); if (status) return status; + if (!entries) + return -EINVAL; + nr_entries = pci_msix_vec_count(dev); if (nr_entries < 0) return nr_entries; @@ -1047,8 +1050,9 @@ int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec) int nvec; int rc; - if (dev->current_state != PCI_D0) - return -EINVAL; + rc = pci_msi_check_device(dev, minvec); + if (rc) + return rc; WARN_ON(!!dev->msi_enabled); @@ -1071,17 +1075,6 @@ int pci_enable_msi_range(struct pci_dev *dev, int minvec, int maxvec) nvec = maxvec; do { - rc = pci_msi_check_device(dev, nvec); - if (rc < 0) { - return rc; - } else if (rc > 0) { - if (rc < minvec) - return -ENOSPC; - nvec = rc; - } - } while (rc); - - do { rc = msi_capability_init(dev, nvec); if (rc < 0) { return rc; |