]> err.no Git - linux-2.6/commitdiff
PCI: Fix incorrect argument order to list_add_tail() in PCI dynamic ID code
authorMichael Ellerman <michael@ellerman.id.au>
Fri, 14 Sep 2007 05:33:13 +0000 (15:33 +1000)
committerGreg Kroah-Hartman <gregkh@suse.de>
Fri, 12 Oct 2007 22:03:17 +0000 (15:03 -0700)
The code for dynamically assigning new ids to PCI drivers,
store_new_id(), calls list_add_tail() with the list head and new node
arguments in reversed order.

The result is that every new id written essentially overwrites the
previous list of ids.

Caught with the help of Rusty's "horribly bad" list_node patch:
 http://lkml.org/lkml/2007/6/10/10

Signed-off-by: Michael Ellerman <michael@ellerman.id.au>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
drivers/pci/pci-driver.c

index 004bc248727096b3702b5b8e3f02fc89b6cb8ef1..c43ecedce67340d92b1f5111560677a59ea416a9 100644 (file)
@@ -54,7 +54,6 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
        if (!dynid)
                return -ENOMEM;
 
-       INIT_LIST_HEAD(&dynid->node);
        dynid->id.vendor = vendor;
        dynid->id.device = device;
        dynid->id.subvendor = subvendor;
@@ -65,7 +64,7 @@ store_new_id(struct device_driver *driver, const char *buf, size_t count)
                driver_data : 0UL;
 
        spin_lock(&pdrv->dynids.lock);
-       list_add_tail(&pdrv->dynids.list, &dynid->node);
+       list_add_tail(&dynid->node, &pdrv->dynids.list);
        spin_unlock(&pdrv->dynids.lock);
 
        if (get_driver(&pdrv->driver)) {