Hi Liu,

On Fri, Nov 16, 2012 at 2:54 PM, Chuansheng Liu
[off-list ref] wrote:

So when calling pm_runtime_set_active(), it will hit the strlen(devname==0)
which trigger the panic.

Can you please point to the exact line of code that triggers this panic ?

Here before calling pm_runtime_set_active(), set the dev name, although
it is duplicated with mmc_add_card(), but it do not break the original
design(commit 81968561b).

Normally we'd like to avoid such a solution, so let's first make sure
we understand the problem.

Have you tried thinking how come this shows up only now - has any of
the relevant code been changed lately ? Are you using a vanilla Linux
tree ?

Thanks,
Ohad.