From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Stephen M. Cameron" Subject: [PATCH 14/24] hpsa: check that simple mode is supported Date: Thu, 27 May 2010 15:13:53 -0500 Message-ID: <20100527201353.3116.64378.stgit@beardog.cce.hp.com> References: <20100527200301.3116.78973.stgit@beardog.cce.hp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Return-path: Received: from g1t0029.austin.hp.com ([15.216.28.36]:40250 "EHLO g1t0029.austin.hp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755217Ab0E0UJP (ORCPT ); Thu, 27 May 2010 16:09:15 -0400 In-Reply-To: <20100527200301.3116.78973.stgit@beardog.cce.hp.com> Sender: linux-scsi-owner@vger.kernel.org List-Id: linux-scsi@vger.kernel.org To: linux-scsi@vger.kernel.org Cc: James.Bottomley@HansenPartnership.com, dab@hp.com, mikem@beardog.cce.hp.com From: Stephen M. Cameron hpsa: check that simple mode is supported before trying to enter simple mode transport method. Signed-off-by: Stephen M. Cameron --- drivers/scsi/hpsa.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/scsi/hpsa.c b/drivers/scsi/hpsa.c index bb1b86e..61fd71e 100644 --- a/drivers/scsi/hpsa.c +++ b/drivers/scsi/hpsa.c @@ -3421,6 +3421,11 @@ static inline void hpsa_p600_dma_prefetch_quirk(struct ctlr_info *h) static int __devinit hpsa_enter_simple_mode(struct ctlr_info *h) { int i; + u32 trans_support; + + trans_support = readl(&(h->cfgtable->TransportSupport)); + if (!(trans_support & SIMPLE_MODE)) + return -ENOTSUPP; h->max_commands = readl(&(h->cfgtable->CmdsOutMax)); /* Update the field, and then ring the doorbell */