ibmvnic: Make CRQ interrupt tasklet wait for all capabilities crqs
After sending device capability queries and requests to the vNIC Server, an interrupt is triggered and the responses are written to the driver's CRQ response buffer. Since the interrupt can be triggered before all responses are written and visible to the partition, there is a danger that the interrupt handler or tasklet can terminate before all responses are read, resulting in a failure to initialize the device. To avoid this scenario, when capability commands are sent, we set a flag that will be checked in the following interrupt tasklet that will handle the capability responses from the server. Once all responses have been handled, the flag is disabled; and the tasklet is allowed to terminate. Signed-off-by:Thomas Falcon <tlfalcon@linux.vnet.ibm.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
parent
901e040a
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