From: Belinda Thompson Date: Wed, 7 Mar 2012 02:06:27 +0000 (+0000) Subject: ctcm: use correct idal word list for ctcmpc X-Git-Tag: firefly_0821_release~3680^2~3338^2~115 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=205a8b649cf6c0a1e6e7512b65c72df480e2a883;p=firefly-linux-kernel-4.4.55.git ctcm: use correct idal word list for ctcmpc Communication Server Linux uses the ctcmpc code of the ctcm driver. Sending problems have shown up caused by a wrong idal word list for the first ccw. Function ctcmpc_chx_txdone() invokes the function to prepare the idal word list without setting an appropriate length for the first ccw, which may lead to an incomplete idal word list. This patch sets the maximum buffer size as data length of the first ccw. Thus correct idal word lists are guaranteed in all cases. Signed-off-by: Belinda Thompson Reviewed-by: Ursula Braun Signed-off-by: Frank Blaschka Signed-off-by: David S. Miller --- diff --git a/drivers/s390/net/ctcm_fsms.c b/drivers/s390/net/ctcm_fsms.c index 2d602207541b..a69766900a17 100644 --- a/drivers/s390/net/ctcm_fsms.c +++ b/drivers/s390/net/ctcm_fsms.c @@ -1341,6 +1341,12 @@ static void ctcmpc_chx_txdone(fsm_instance *fi, int event, void *arg) spin_unlock(&ch->collect_lock); clear_normalized_cda(&ch->ccw[1]); + + CTCM_PR_DBGDATA("ccwcda=0x%p data=0x%p\n", + (void *)(unsigned long)ch->ccw[1].cda, + ch->trans_skb->data); + ch->ccw[1].count = ch->max_bufsize; + if (set_normalized_cda(&ch->ccw[1], ch->trans_skb->data)) { dev_kfree_skb_any(ch->trans_skb); ch->trans_skb = NULL; @@ -1350,6 +1356,11 @@ static void ctcmpc_chx_txdone(fsm_instance *fi, int event, void *arg) fsm_event(priv->mpcg->fsm, MPCG_EVENT_INOP, dev); return; } + + CTCM_PR_DBGDATA("ccwcda=0x%p data=0x%p\n", + (void *)(unsigned long)ch->ccw[1].cda, + ch->trans_skb->data); + ch->ccw[1].count = ch->trans_skb->len; fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch); ch->prof.send_stamp = current_kernel_time(); /* xtime */