[S390] cio: css_register_subchannel race.
Asynchronous probe can release memory of a subchannel before css_get_ssd_info is called. To fix this call css_get_ssd_info before registering with driver core. Signed-off-by:Stefan Bader <shbader@de.ibm.com> Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com>
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