PCI: pci-sysfs.c: convert to use BUS_ATTR_WO

We are trying to get rid of BUS_ATTR() and the usage of that in
pci-sysfs.c can be trivially converted to use BUS_ATTR_WO(), so use that
instead.

Cc: Bjorn Helgaas <bhelgaas@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

drivers/pci/pci-sysfs.c

@@ -412,8 +412,7 @@ static ssize_t msi_bus_store(struct device *dev, struct device_attribute *attr,
 }
 static DEVICE_ATTR_RW(msi_bus);
 
-static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
-				size_t count)
+static ssize_t rescan_store(struct bus_type *bus, const char *buf, size_t count)
 {
 	unsigned long val;
 	struct pci_bus *b = NULL;
@@ -429,7 +428,7 @@ static ssize_t bus_rescan_store(struct bus_type *bus, const char *buf,
 	}
 	return count;
 }
-static BUS_ATTR(rescan, (S_IWUSR|S_IWGRP), NULL, bus_rescan_store);
+static BUS_ATTR_WO(rescan);
 
 static struct attribute *pci_bus_attrs[] = {
 	&bus_attr_rescan.attr,