PCI: Track the size of each saved capability data area
This will allow us to store and load it later.
Signed-off-by: Alex Williamson <alex.williamson@redhat.com>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
diff --git a/drivers/pci/pci.c b/drivers/pci/pci.c
index 53302cb..d6e5b8e 100644
--- a/drivers/pci/pci.c
+++ b/drivers/pci/pci.c
@@ -830,7 +830,7 @@
dev_err(&dev->dev, "buffer not found in %s\n", __func__);
return -ENOMEM;
}
- cap = (u16 *)&save_state->data[0];
+ cap = (u16 *)&save_state->cap.data[0];
pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags);
@@ -863,7 +863,7 @@
pos = pci_find_capability(dev, PCI_CAP_ID_EXP);
if (!save_state || pos <= 0)
return;
- cap = (u16 *)&save_state->data[0];
+ cap = (u16 *)&save_state->cap.data[0];
pci_read_config_word(dev, pos + PCI_EXP_FLAGS, &flags);
@@ -899,7 +899,8 @@
return -ENOMEM;
}
- pci_read_config_word(dev, pos + PCI_X_CMD, (u16 *)save_state->data);
+ pci_read_config_word(dev, pos + PCI_X_CMD,
+ (u16 *)save_state->cap.data);
return 0;
}
@@ -914,7 +915,7 @@
pos = pci_find_capability(dev, PCI_CAP_ID_PCIX);
if (!save_state || pos <= 0)
return;
- cap = (u16 *)&save_state->data[0];
+ cap = (u16 *)&save_state->cap.data[0];
pci_write_config_word(dev, pos + PCI_X_CMD, cap[i++]);
}
@@ -1771,7 +1772,8 @@
if (!save_state)
return -ENOMEM;
- save_state->cap_nr = cap;
+ save_state->cap.cap_nr = cap;
+ save_state->cap.size = size;
pci_add_saved_cap(dev, save_state);
return 0;
diff --git a/include/linux/pci.h b/include/linux/pci.h
index df4d69b..61ef8f2 100644
--- a/include/linux/pci.h
+++ b/include/linux/pci.h
@@ -214,10 +214,15 @@
PCI_SPEED_UNKNOWN = 0xff,
};
+struct pci_cap_saved_data {
+ char cap_nr;
+ unsigned int size;
+ u32 data[0];
+};
+
struct pci_cap_saved_state {
struct hlist_node next;
- char cap_nr;
- u32 data[0];
+ struct pci_cap_saved_data cap;
};
struct pcie_link_state;
@@ -366,7 +371,7 @@
struct hlist_node *pos;
hlist_for_each_entry(tmp, pos, &pci_dev->saved_cap_space, next) {
- if (tmp->cap_nr == cap)
+ if (tmp->cap.cap_nr == cap)
return tmp;
}
return NULL;