diff options
Diffstat (limited to 'drivers/pci/pci.c')
| -rw-r--r-- | drivers/pci/pci.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c index 3d2fb394986a..287fa40f763c 100644 --- a/drivers/pci/pci.c +++ b/drivers/pci/pci.c @@ -1556,7 +1556,7 @@ static void pci_save_ltr_state(struct pci_dev *dev) { int ltr; struct pci_cap_saved_state *save_state; - u16 *cap; + u32 *cap; if (!pci_is_pcie(dev)) return; @@ -1571,25 +1571,25 @@ static void pci_save_ltr_state(struct pci_dev *dev) return; } - cap = (u16 *)&save_state->cap.data[0]; - pci_read_config_word(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, cap++); - pci_read_config_word(dev, ltr + PCI_LTR_MAX_NOSNOOP_LAT, cap++); + /* Some broken devices only support dword access to LTR */ + cap = &save_state->cap.data[0]; + pci_read_config_dword(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, cap); } static void pci_restore_ltr_state(struct pci_dev *dev) { struct pci_cap_saved_state *save_state; int ltr; - u16 *cap; + u32 *cap; save_state = pci_find_saved_ext_cap(dev, PCI_EXT_CAP_ID_LTR); ltr = pci_find_ext_capability(dev, PCI_EXT_CAP_ID_LTR); if (!save_state || !ltr) return; - cap = (u16 *)&save_state->cap.data[0]; - pci_write_config_word(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, *cap++); - pci_write_config_word(dev, ltr + PCI_LTR_MAX_NOSNOOP_LAT, *cap++); + /* Some broken devices only support dword access to LTR */ + cap = &save_state->cap.data[0]; + pci_write_config_dword(dev, ltr + PCI_LTR_MAX_SNOOP_LAT, *cap); } /** |