From: David Hildenbrand david@redhat.com
[ Upstream commit 7d8212747435c534c8d564fbef4541a463c976ff ]
When unloading the module, one gets ------------[ cut here ]------------ Device 'cmm0' does not have a release() function, it is broken and must be fixed. See Documentation/kobject.txt. WARNING: CPU: 0 PID: 19308 at drivers/base/core.c:1244 .device_release+0xcc/0xf0 ...
We only have one static fake device. There is nothing to do when releasing the device (via cmm_exit()).
Signed-off-by: David Hildenbrand david@redhat.com Signed-off-by: Michael Ellerman mpe@ellerman.id.au Link: https://lore.kernel.org/r/20191031142933.10779-2-david@redhat.com Signed-off-by: Sasha Levin sashal@kernel.org --- arch/powerpc/platforms/pseries/cmm.c | 5 +++++ 1 file changed, 5 insertions(+)
diff --git a/arch/powerpc/platforms/pseries/cmm.c b/arch/powerpc/platforms/pseries/cmm.c index 25427a48feae..502ebcc6c3cb 100644 --- a/arch/powerpc/platforms/pseries/cmm.c +++ b/arch/powerpc/platforms/pseries/cmm.c @@ -425,6 +425,10 @@ static struct bus_type cmm_subsys = { .dev_name = "cmm", };
+static void cmm_release_device(struct device *dev) +{ +} + /** * cmm_sysfs_register - Register with sysfs * @@ -440,6 +444,7 @@ static int cmm_sysfs_register(struct device *dev)
dev->id = 0; dev->bus = &cmm_subsys; + dev->release = cmm_release_device;
if ((rc = device_register(dev))) goto subsys_unregister;