s390/ccwgroup: require at least one ccw device

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ccwgroup_create_dev() derives the gdev's device name from gdev->cdev[0],
so make sure that this reference is valid.

For robustness only, all current ccwgroup drivers get this right.

Signed-off-by: Julian Wiedmann <jwi@linux.vnet.ibm.com>
Acked-by: Sebastian Ott <sebott@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

...

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Julian Wiedmann 2018-01-30 14:39:34 +01:00 • committed by Martin Schwidefsky

parent 2c957a8ad4

commit ab7efda477

1 changed files with 4 additions and 1 deletions

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drivers/s390/cio/ccwgroup.c

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