diff options
| -rw-r--r-- | drivers/pci/msi.c | 6 | ||||
| -rw-r--r-- | drivers/pci/pci.c | 9 | ||||
| -rw-r--r-- | include/linux/pci.h | 2 |
3 files changed, 14 insertions, 3 deletions
diff --git a/drivers/pci/msi.c b/drivers/pci/msi.c index 9c69b6966e79..3ec558dc6523 100644 --- a/drivers/pci/msi.c +++ b/drivers/pci/msi.c @@ -453,9 +453,11 @@ static void enable_msi_mode(struct pci_dev *dev, int pos, int type) /* Set enabled bits to single MSI & enable MSI_enable bit */ msi_enable(control, 1); pci_write_config_word(dev, msi_control_reg(pos), control); + dev->msi_enabled = 1; } else { msix_enable(control); pci_write_config_word(dev, msi_control_reg(pos), control); + dev->msix_enabled = 1; } if (pci_find_capability(dev, PCI_CAP_ID_EXP)) { /* PCI Express Endpoint device detected */ @@ -472,9 +474,11 @@ void disable_msi_mode(struct pci_dev *dev, int pos, int type) /* Set enabled bits to single MSI & enable MSI_enable bit */ msi_disable(control); pci_write_config_word(dev, msi_control_reg(pos), control); + dev->msi_enabled = 0; } else { msix_disable(control); pci_write_config_word(dev, msi_control_reg(pos), control); + dev->msix_enabled = 0; } if (pci_find_capability(dev, PCI_CAP_ID_EXP)) { /* PCI Express Endpoint device detected */ @@ -549,7 +553,6 @@ int pci_save_msi_state(struct pci_dev *dev) pci_read_config_dword(dev, pos + PCI_MSI_DATA_32, &cap[i++]); if (control & PCI_MSI_FLAGS_MASKBIT) pci_read_config_dword(dev, pos + PCI_MSI_MASK_BIT, &cap[i++]); - disable_msi_mode(dev, pos, PCI_CAP_ID_MSI); save_state->cap_nr = PCI_CAP_ID_MSI; pci_add_saved_cap(dev, save_state); return 0; @@ -639,7 +642,6 @@ int pci_save_msix_state(struct pci_dev *dev) } dev->irq = temp; - disable_msi_mode(dev, pos, PCI_CAP_ID_MSIX); save_state->cap_nr = PCI_CAP_ID_MSIX; pci_add_saved_cap(dev, save_state); return 0; diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index aa480370ef10..d408a3c30426 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -551,7 +551,14 @@ void pci_disable_device(struct pci_dev *dev) { u16 pci_command; - + + if (dev->msi_enabled) + disable_msi_mode(dev, pci_find_capability(dev, PCI_CAP_ID_MSI), + PCI_CAP_ID_MSI); + if (dev->msix_enabled) + disable_msi_mode(dev, pci_find_capability(dev, PCI_CAP_ID_MSI), + PCI_CAP_ID_MSIX); + pci_read_config_word(dev, PCI_COMMAND, &pci_command); if (pci_command & PCI_COMMAND_MASTER) { pci_command &= ~PCI_COMMAND_MASTER; diff --git a/include/linux/pci.h b/include/linux/pci.h index 91c37750cd34..62a8c22f5f60 100644 --- a/include/linux/pci.h +++ b/include/linux/pci.h @@ -163,6 +163,8 @@ struct pci_dev { unsigned int no_msi:1; /* device may not use msi */ unsigned int block_ucfg_access:1; /* userspace config space access is blocked */ unsigned int broken_parity_status:1; /* Device generates false positive parity */ + unsigned int msi_enabled:1; + unsigned int msix_enabled:1; u32 saved_config_space[16]; /* config space saved at suspend time */ struct hlist_head saved_cap_space; |