[PATCH 06/12] pci : Use mutex instead of semaphore in driver core

[Dave Young <hidave.darkstar@gmail.com>]

Signed-off-by: Dave Young <hidave.darkstar@gmail.com> 

---
drivers/pci/bus.c |    4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)

diff -upr linux/drivers/pci/bus.c linux.new/drivers/pci/bus.c
--- linux/drivers/pci/bus.c	2007-12-28 10:25:07.000000000 +0800
+++ linux.new/drivers/pci/bus.c	2007-12-28 10:28:56.000000000 +0800
@@ -207,9 +207,9 @@ void pci_walk_bus(struct pci_bus *top, v
 			next = dev->bus_list.next;
 
 		/* Run device routines with the device locked */
-		down(&dev->dev.sem);
+		mutex_lock(&dev->dev.mutex);
 		cb(dev, userdata);
-		up(&dev->dev.sem);
+		mutex_unlock(&dev->dev.mutex);
 	}
 	up_read(&pci_bus_sem);
 }