Vasant Hegde [off-list ref] writes:

We can continue to read the error log (up to MAX size) even if
we get the elog size more than MAX size. Hence change BUG_ON to
WARN_ON.

Also updated error message.

Reported-by: Gopesh Kumar Chaudhary <redacted>
Signed-off-by: Vasant Hegde <redacted>
Signed-off-by: Ananth N Mavinakayanahalli <redacted>
Acked-by: Deepthi Dharwar <redacted>

So, it turns out the BUG_ON actually caught an FSP bug, at the very
least in their documentation.

The WARN_ON is probably the best thing we can do, along with the
OPAL/skiboot side fixes that I've mentioned separately.

Acked-by: Stewart Smith <redacted>