ibmvnic: Do not attempt to login if RX or TX queues are not allocated

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If a device reset fails for some reason, TX and RX queue resources
could be released. If a user attempts to open the device in this scenario,
it may result in a kernel panic as the driver tries to access this
memory. To fix this, include a check before device login that TX/RX
queues are still there before enabling the device. In addition, return a
value that can be checked in case of any errors to avoid waiting for a
completion that will never come.

Signed-off-by: Thomas Falcon <tlfalcon@linux.vnet.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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Thomas Falcon 2018-02-26 18:10:59 -06:00 • committed by David S. Miller

parent 0aecb13ce3

commit 20a8ab744f

1 changed files with 15 additions and 6 deletions

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drivers/net/ethernet/ibm/ibmvnic.c

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