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xpp: Fail loading if no module on first slot 

The driver assumes that the first slot is not empty. If this is not the
case, synchronization will not work.

Fail loading if this assertion does not hold.

Signed-off-by: Tzafrir Cohen <tzafrir.cohen@xorcom.com>
This commit is contained in:
Tzafrir Cohen 2013-11-06 20:01:55 +02:00
parent f287c0af7f
commit bd0366287e
1 changed files with 5 additions and 0 deletions
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5
drivers/dahdi/xpp/card_global.c
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@ -511,6 +511,11 @@ HANDLER_DEF(GLOBAL, AB_DESCRIPTION)
ret = -EPROTO;
goto proto_err;
}
if (units[0].addr.unit != 0 || units[0].addr.subunit != 0) {
XBUS_NOTICE(xbus, "No first module. Astribank unusable.\n");
ret = -EPROTO;
goto proto_err;
}
if (!xbus_setstate(xbus, XBUS_STATE_RECVD_DESC)) {
ret = -EPROTO;
goto proto_err;