PCI: add debug print out for add_size

For use in debugging resource reallocation.

Signed-off-by: Yinghai Lu <yinghai@kernel.org>
Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>

1 files changed, 18 insertions, 6 deletions

diff --git a/drivers/pci/setup-bus.c b/drivers/pci/setup-bus.c
index c845d18bb126..ae0b1f2c9e0a 100644
--- a/drivers/pci/setup-bus.c
+++ b/drivers/pci/setup-bus.c
@@ -118,10 +118,13 @@ static resource_size_t get_res_add_size(struct list_head *head,
 
         list_for_each_entry(dev_res, head, list) {
                 if (dev_res->res == res) {
+                        int idx = res - &dev_res->dev->resource[0];
+
                         dev_printk(KERN_DEBUG, &dev_res->dev->dev,
-                                 "%pR get_res_add_size  add_size %llx\n",
-                                 dev_res->res,
+                                 "res[%d]=%pR get_res_add_size add_size %llx\n",
+                                 idx, dev_res->res,
                                  (unsigned long long)dev_res->add_size);
+
                         return dev_res->add_size;
                 }
         }
@@ -260,8 +263,9 @@ static void reassign_resources_sorted(struct list_head *realloc_head,
                         if (pci_reassign_resource(add_res->dev, idx,
                                                   add_size, align))
                                 dev_printk(KERN_DEBUG, &add_res->dev->dev,
-                                   "failed to add optional resources res=%pR\n",
-                                                        res);
+                                           "failed to add %llx res[%d]=%pR\n",
+                                           (unsigned long long)add_size,
+                                           idx, res);
                 }
 out:
                 list_del(&add_res->list);
@@ -760,8 +764,12 @@ static void pbus_size_io(struct pci_bus *bus, resource_size_t min_size,
         b_res->start = 4096;
         b_res->end = b_res->start + size0 - 1;
         b_res->flags |= IORESOURCE_STARTALIGN;
-        if (size1 > size0 && realloc_head)
+        if (size1 > size0 && realloc_head) {
                 add_to_list(realloc_head, bus->self, b_res, size1-size0, 4096);
+                dev_printk(KERN_DEBUG, &bus->self->dev, "bridge window "
+                                 "%pR to [bus %02x-%02x] add_size %lx\n", b_res,
+                                 bus->secondary, bus->subordinate, size1-size0);
+        }
 }
 
 /**
@@ -873,8 +881,12 @@ static int pbus_size_mem(struct pci_bus *bus, unsigned long mask,
         b_res->start = min_align;
         b_res->end = size0 + min_align - 1;
         b_res->flags |= IORESOURCE_STARTALIGN | mem64_mask;
-        if (size1 > size0 && realloc_head)
+        if (size1 > size0 && realloc_head) {
                 add_to_list(realloc_head, bus->self, b_res, size1-size0, min_align);
+                dev_printk(KERN_DEBUG, &bus->self->dev, "bridge window "
+                                 "%pR to [bus %02x-%02x] add_size %llx\n", b_res,
+                                 bus->secondary, bus->subordinate, (unsigned long long)size1-size0);
+        }
         return 1;
 }