From mboxrd@z Thu Jan 1 00:00:00 1970 From: Sergei Shtylyov Subject: Re: [PATCH 09/12] ahci: Introduce ahci_set_em_messages() Date: Wed, 03 Mar 2010 00:18:59 +0300 Message-ID: <4B8D80C3.1050006@ru.mvista.com> References: <20100302182850.GA32057@oksana.dev.rtsoft.ru> <20100302182939.GI3445@oksana.dev.rtsoft.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Return-path: Received: from mail-bw0-f209.google.com ([209.85.218.209]:46413 "EHLO mail-bw0-f209.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750905Ab0CBVTa (ORCPT ); Tue, 2 Mar 2010 16:19:30 -0500 In-Reply-To: <20100302182939.GI3445@oksana.dev.rtsoft.ru> Sender: linux-ide-owner@vger.kernel.org List-Id: linux-ide@vger.kernel.org To: Anton Vorontsov Cc: Jeff Garzik , linux-ide@vger.kernel.org, linux-kernel@vger.kernel.org Hello. Anton Vorontsov wrote: > Factor out some ahci_em_messages handling code from ahci_init_one(). > We would like to reuse it for non-PCI devices. > > Signed-off-by: Anton Vorontsov > --- > drivers/ata/ahci.c | 41 ++++++++++++++++++++++++----------------- > 1 files changed, 24 insertions(+), 17 deletions(-) > > diff --git a/drivers/ata/ahci.c b/drivers/ata/ahci.c > index 18443e9..6694b17 100644 > --- a/drivers/ata/ahci.c > +++ b/drivers/ata/ahci.c > @@ -3040,6 +3040,29 @@ static inline void ahci_gtf_filter_workaround(struct ata_host *host) > {} > #endif > > +static void ahci_set_em_messages(struct ahci_host_priv *hpriv, > + struct ata_port_info *pi) > +{ > + u8 messages; > + void __iomem *mmio = hpriv->mmio; > + u32 em_loc = readl(mmio + HOST_EM_LOC); > + u32 em_ctl = readl(mmio + HOST_EM_CTL); > + > + if (!ahci_em_messages || !(hpriv->cap & HOST_CAP_EMS)) > + return; > + > + messages = (em_ctl & EM_CTRL_MSG_TYPE) >> 16; > + > + /* we only support LED message type right now */ > + if ((messages & 0x01) && (ahci_em_messages == 1)) { > + /* store em_loc */ > + hpriv->em_loc = ((em_loc >> 16) * 4); > Could drop unneeded parens, while at it... MBR, Sergei