aboutsummaryrefslogtreecommitdiff
path: root/arch/ppc64/kernel
diff options
context:
space:
mode:
authorLinas Vepstas <linas@linas.org>2005-11-03 18:48:45 -0600
committerPaul Mackerras <paulus@samba.org>2005-11-10 11:33:07 +1100
commit56b0fca3a008ddec8c00cfdddbef17bd9ce188e3 (patch)
treecc4138445bd5f65a59c7d2f68ab5169dceb1766f /arch/ppc64/kernel
parent693765021460f19c5d7c638eb76e2efe1cd84752 (diff)
[PATCH] ppc64: PCI address cache minor fixes
03-eeh-addr-cache-cleanup.patch This is a minor patch to clean up a buglet related to the PCI address cache. (The buglet doesn't manifes itself unless there are also bugs elsewhere, which is why its minor.). Also: -- Improved debug printing. -- Declare some private routines as static -- Adds reference counting to struct pci_dn->pcidev structure Signed-off-by: Linas Vepstas <linas@linas.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/ppc64/kernel')
-rw-r--r--arch/ppc64/kernel/eeh.c33
1 files changed, 26 insertions, 7 deletions
diff --git a/arch/ppc64/kernel/eeh.c b/arch/ppc64/kernel/eeh.c
index bb11569d2b4..99f11b66b5a 100644
--- a/arch/ppc64/kernel/eeh.c
+++ b/arch/ppc64/kernel/eeh.c
@@ -219,9 +219,9 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
while (*p) {
parent = *p;
piar = rb_entry(parent, struct pci_io_addr_range, rb_node);
- if (alo < piar->addr_lo) {
+ if (ahi < piar->addr_lo) {
p = &parent->rb_left;
- } else if (ahi > piar->addr_hi) {
+ } else if (alo > piar->addr_hi) {
p = &parent->rb_right;
} else {
if (dev != piar->pcidev ||
@@ -240,6 +240,11 @@ pci_addr_cache_insert(struct pci_dev *dev, unsigned long alo,
piar->pcidev = dev;
piar->flags = flags;
+#ifdef DEBUG
+ printk(KERN_DEBUG "PIAR: insert range=[%lx:%lx] dev=%s\n",
+ alo, ahi, pci_name (dev));
+#endif
+
rb_link_node(&piar->rb_node, parent, p);
rb_insert_color(&piar->rb_node, &pci_io_addr_cache_root.rb_root);
@@ -301,7 +306,7 @@ static void __pci_addr_cache_insert_device(struct pci_dev *dev)
* we maintain a cache of devices that can be quickly searched.
* This routine adds a device to that cache.
*/
-void pci_addr_cache_insert_device(struct pci_dev *dev)
+static void pci_addr_cache_insert_device(struct pci_dev *dev)
{
unsigned long flags;
@@ -344,7 +349,7 @@ restart:
* the tree multiple times (once per resource).
* But so what; device removal doesn't need to be that fast.
*/
-void pci_addr_cache_remove_device(struct pci_dev *dev)
+static void pci_addr_cache_remove_device(struct pci_dev *dev)
{
unsigned long flags;
@@ -366,6 +371,9 @@ void __init pci_addr_cache_build(void)
{
struct pci_dev *dev = NULL;
+ if (!eeh_subsystem_enabled)
+ return;
+
spin_lock_init(&pci_io_addr_cache_root.piar_lock);
while ((dev = pci_get_device(PCI_ANY_ID, PCI_ANY_ID, dev)) != NULL) {
@@ -837,7 +845,7 @@ void eeh_add_device_early(struct device_node *dn)
info.buid_lo = BUID_LO(phb->buid);
early_enable_eeh(dn, &info);
}
-EXPORT_SYMBOL(eeh_add_device_early);
+EXPORT_SYMBOL_GPL(eeh_add_device_early);
/**
* eeh_add_device_late - perform EEH initialization for the indicated pci device
@@ -848,6 +856,8 @@ EXPORT_SYMBOL(eeh_add_device_early);
*/
void eeh_add_device_late(struct pci_dev *dev)
{
+ struct device_node *dn;
+
if (!dev || !eeh_subsystem_enabled)
return;
@@ -855,9 +865,13 @@ void eeh_add_device_late(struct pci_dev *dev)
printk(KERN_DEBUG "EEH: adding device %s\n", pci_name(dev));
#endif
+ pci_dev_get (dev);
+ dn = pci_device_to_OF_node(dev);
+ PCI_DN(dn)->pcidev = dev;
+
pci_addr_cache_insert_device (dev);
}
-EXPORT_SYMBOL(eeh_add_device_late);
+EXPORT_SYMBOL_GPL(eeh_add_device_late);
/**
* eeh_remove_device - undo EEH setup for the indicated pci device
@@ -868,6 +882,7 @@ EXPORT_SYMBOL(eeh_add_device_late);
*/
void eeh_remove_device(struct pci_dev *dev)
{
+ struct device_node *dn;
if (!dev || !eeh_subsystem_enabled)
return;
@@ -876,8 +891,12 @@ void eeh_remove_device(struct pci_dev *dev)
printk(KERN_DEBUG "EEH: remove device %s\n", pci_name(dev));
#endif
pci_addr_cache_remove_device(dev);
+
+ dn = pci_device_to_OF_node(dev);
+ PCI_DN(dn)->pcidev = NULL;
+ pci_dev_put (dev);
}
-EXPORT_SYMBOL(eeh_remove_device);
+EXPORT_SYMBOL_GPL(eeh_remove_device);
static int proc_eeh_show(struct seq_file *m, void *v)
{