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authorTrond Myklebust <Trond.Myklebust@netapp.com>2006-06-24 08:41:41 -0400
committerTrond Myklebust <Trond.Myklebust@netapp.com>2006-06-24 13:07:53 -0400
commit816724e65c72a90a44fbad0ef0b59b186c85fa90 (patch)
tree421fa29aedff988e392f92780637553e275d37a0 /drivers/pci/search.c
parent70ac4385a13f78bc478f26d317511893741b05bd (diff)
parentd384ea691fe4ea8c2dd5b9b8d9042eb181776f18 (diff)
downloadlinux-816724e65c72a90a44fbad0ef0b59b186c85fa90.tar.bz2
Merge branch 'master' of /home/trondmy/kernel/linux-2.6/
Conflicts: fs/nfs/inode.c fs/super.c Fix conflicts between patch 'NFS: Split fs/nfs/inode.c' and patch 'VFS: Permit filesystem to override root dentry on mount'
Diffstat (limited to 'drivers/pci/search.c')
-rw-r--r--drivers/pci/search.c32
1 files changed, 16 insertions, 16 deletions
diff --git a/drivers/pci/search.c b/drivers/pci/search.c
index ce7dd6e7be60..622b3f8ba820 100644
--- a/drivers/pci/search.c
+++ b/drivers/pci/search.c
@@ -13,7 +13,7 @@
#include <linux/interrupt.h>
#include "pci.h"
-DEFINE_SPINLOCK(pci_bus_lock);
+DECLARE_RWSEM(pci_bus_sem);
static struct pci_bus * __devinit
pci_do_find_bus(struct pci_bus* bus, unsigned char busnr)
@@ -72,11 +72,11 @@ pci_find_next_bus(const struct pci_bus *from)
struct pci_bus *b = NULL;
WARN_ON(in_interrupt());
- spin_lock(&pci_bus_lock);
+ down_read(&pci_bus_sem);
n = from ? from->node.next : pci_root_buses.next;
if (n != &pci_root_buses)
b = pci_bus_b(n);
- spin_unlock(&pci_bus_lock);
+ up_read(&pci_bus_sem);
return b;
}
@@ -124,7 +124,7 @@ struct pci_dev * pci_get_slot(struct pci_bus *bus, unsigned int devfn)
struct pci_dev *dev;
WARN_ON(in_interrupt());
- spin_lock(&pci_bus_lock);
+ down_read(&pci_bus_sem);
list_for_each(tmp, &bus->devices) {
dev = pci_dev_b(tmp);
@@ -135,7 +135,7 @@ struct pci_dev * pci_get_slot(struct pci_bus *bus, unsigned int devfn)
dev = NULL;
out:
pci_dev_get(dev);
- spin_unlock(&pci_bus_lock);
+ up_read(&pci_bus_sem);
return dev;
}
@@ -167,7 +167,7 @@ static struct pci_dev * pci_find_subsys(unsigned int vendor,
struct pci_dev *dev;
WARN_ON(in_interrupt());
- spin_lock(&pci_bus_lock);
+ down_read(&pci_bus_sem);
n = from ? from->global_list.next : pci_devices.next;
while (n && (n != &pci_devices)) {
@@ -181,7 +181,7 @@ static struct pci_dev * pci_find_subsys(unsigned int vendor,
}
dev = NULL;
exit:
- spin_unlock(&pci_bus_lock);
+ up_read(&pci_bus_sem);
return dev;
}
@@ -232,7 +232,7 @@ pci_get_subsys(unsigned int vendor, unsigned int device,
struct pci_dev *dev;
WARN_ON(in_interrupt());
- spin_lock(&pci_bus_lock);
+ down_read(&pci_bus_sem);
n = from ? from->global_list.next : pci_devices.next;
while (n && (n != &pci_devices)) {
@@ -247,7 +247,7 @@ pci_get_subsys(unsigned int vendor, unsigned int device,
dev = NULL;
exit:
dev = pci_dev_get(dev);
- spin_unlock(&pci_bus_lock);
+ up_read(&pci_bus_sem);
pci_dev_put(from);
return dev;
}
@@ -292,7 +292,7 @@ pci_find_device_reverse(unsigned int vendor, unsigned int device, const struct p
struct pci_dev *dev;
WARN_ON(in_interrupt());
- spin_lock(&pci_bus_lock);
+ down_read(&pci_bus_sem);
n = from ? from->global_list.prev : pci_devices.prev;
while (n && (n != &pci_devices)) {
@@ -304,7 +304,7 @@ pci_find_device_reverse(unsigned int vendor, unsigned int device, const struct p
}
dev = NULL;
exit:
- spin_unlock(&pci_bus_lock);
+ up_read(&pci_bus_sem);
return dev;
}
@@ -328,7 +328,7 @@ struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from)
struct pci_dev *dev;
WARN_ON(in_interrupt());
- spin_lock(&pci_bus_lock);
+ down_read(&pci_bus_sem);
n = from ? from->global_list.next : pci_devices.next;
while (n && (n != &pci_devices)) {
@@ -340,7 +340,7 @@ struct pci_dev *pci_get_class(unsigned int class, struct pci_dev *from)
dev = NULL;
exit:
dev = pci_dev_get(dev);
- spin_unlock(&pci_bus_lock);
+ up_read(&pci_bus_sem);
pci_dev_put(from);
return dev;
}
@@ -362,7 +362,7 @@ int pci_dev_present(const struct pci_device_id *ids)
int found = 0;
WARN_ON(in_interrupt());
- spin_lock(&pci_bus_lock);
+ down_read(&pci_bus_sem);
while (ids->vendor || ids->subvendor || ids->class_mask) {
list_for_each_entry(dev, &pci_devices, global_list) {
if (pci_match_one_device(ids, dev)) {
@@ -372,8 +372,8 @@ int pci_dev_present(const struct pci_device_id *ids)
}
ids++;
}
-exit:
- spin_unlock(&pci_bus_lock);
+exit:
+ up_read(&pci_bus_sem);
return found;
}
EXPORT_SYMBOL(pci_dev_present);