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npu2-opencapi: Rework link training timeout
Opencapi link state should be polled for up to 3 seconds. Current code assumes a tight retry loop during fundamental reset at boot, which is not going to be true on link retraining. So update the timeout detection code to use a timebase instead of a simple retry count which could be way too long. Reviewed-by: Christophe Lombard <clombard@linux.vnet.ibm.com> Reviewed-by: Andrew Donnellan <ajd@linux.ibm.com> Signed-off-by: Frederic Barrat <fbarrat@linux.ibm.com> Signed-off-by: Oliver O'Halloran <oohall@gmail.com>
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