> calling acpi_cpufreq_init+0x0/0x68()
> sysdev: class cpu: driver (ffffffff80da0110) has already been
> registered to a class, something is wrong, but will forge on!
> ------------[ cut here ]------------
> WARNING: at drivers/base/sys.c:183 sysdev_driver_register+0x82/0x150()
> Modules linked in:
> Pid: 1, comm: swapper Not tainted
> 2.6.26-rc1-sched-devel.git-x86-latest.git-00485-g253148c-dirty #333
I've seen this too. The following patch seems to work for me.
--
OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
[PATCH] Fix bogus warning in sysdev_driver_register()
if ((drv->entry.next != drv->entry.prev) ||
(drv->entry.next != NULL)) {
warns list_empty(&drv->entry).
Signed-off-by: OGAWA Hirofumi <hirofumi@xxxxxxxxxxxxxxxxxx>
---
drivers/base/sys.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff -puN drivers/base/sys.c~fix-sys-bogus-warning drivers/base/sys.c
--- linux-2.6/drivers/base/sys.c~fix-sys-bogus-warning 2008-05-06 14:30:42.000000000 +0900
+++ linux-2.6-hirofumi/drivers/base/sys.c 2008-05-06 14:30:45.000000000 +0900
@@ -175,7 +175,7 @@ int sysdev_driver_register(struct sysdev
}
/* Check whether this driver has already been added to a class. */
- if ((drv->entry.next != drv->entry.prev) ||
+ if ((drv->entry.next != drv->entry.prev) &&
(drv->entry.next != NULL)) {
printk(KERN_WARNING "sysdev: class %s: driver (%p) has already"
" been registered to a class, something is wrong, but "
_
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