From mboxrd@z Thu Jan 1 00:00:00 1970 From: Hannes Reinecke Subject: Re: [PATCH v5 02/15] scsi: ufs: avoid spurious UFS host controller interrupts Date: Tue, 1 Mar 2016 13:10:15 +0800 Message-ID: <56D52437.1050104@suse.de> References: <1456666367-11418-1-git-send-email-ygardi@codeaurora.org> <1456666367-11418-3-git-send-email-ygardi@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: In-Reply-To: <1456666367-11418-3-git-send-email-ygardi@codeaurora.org> Sender: linux-scsi-owner@vger.kernel.org To: Yaniv Gardi , James.Bottomley@HansenPartnership.com Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-arm-msm@vger.kernel.org, santoshsy@gmail.com, linux-scsi-owner@vger.kernel.org, Subhash Jadavani , Vinayak Holikatti , "James E.J. Bottomley" , "Martin K. Petersen" List-Id: linux-arm-msm@vger.kernel.org On 02/28/2016 09:32 PM, Yaniv Gardi wrote: > When control reaches to Linux UFS driver during UFS boot mode, UFS ho= st > controller interrupt status/enable registers may have left over > settings. > In order to avoid any spurious interrupts due to these left overs, > it's important to clear these interrupt status/enable registers befor= e > enabling UFS interrupt handling. >=20 > Signed-off-by: Subhash Jadavani > Signed-off-by: Yaniv Gardi >=20 > --- > drivers/scsi/ufs/ufshcd.c | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) >=20 Reviewed-by: Hannes Reinecke Cheers, Hannes --=20 Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 N=FCrnberg GF: J. Hawn, J. Guild, F. Imend=F6rffer, HRB 16746 (AG N=FCrnberg) -- To unsubscribe from this list: send the line "unsubscribe linux-scsi" i= n the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751081AbcCAFKm (ORCPT ); Tue, 1 Mar 2016 00:10:42 -0500 Received: from mx2.suse.de ([195.135.220.15]:50517 "EHLO mx2.suse.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750773AbcCAFKk (ORCPT ); Tue, 1 Mar 2016 00:10:40 -0500 Subject: Re: [PATCH v5 02/15] scsi: ufs: avoid spurious UFS host controller interrupts To: Yaniv Gardi , James.Bottomley@HansenPartnership.com References: <1456666367-11418-1-git-send-email-ygardi@codeaurora.org> <1456666367-11418-3-git-send-email-ygardi@codeaurora.org> Cc: linux-kernel@vger.kernel.org, linux-scsi@vger.kernel.org, linux-arm-msm@vger.kernel.org, santoshsy@gmail.com, linux-scsi-owner@vger.kernel.org, Subhash Jadavani , Vinayak Holikatti , "James E.J. Bottomley" , "Martin K. Petersen" From: Hannes Reinecke Message-ID: <56D52437.1050104@suse.de> Date: Tue, 1 Mar 2016 13:10:15 +0800 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.6.0 MIME-Version: 1.0 In-Reply-To: <1456666367-11418-3-git-send-email-ygardi@codeaurora.org> Content-Type: text/plain; charset=windows-1252 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 02/28/2016 09:32 PM, Yaniv Gardi wrote: > When control reaches to Linux UFS driver during UFS boot mode, UFS host > controller interrupt status/enable registers may have left over > settings. > In order to avoid any spurious interrupts due to these left overs, > it's important to clear these interrupt status/enable registers before > enabling UFS interrupt handling. > > Signed-off-by: Subhash Jadavani > Signed-off-by: Yaniv Gardi > > --- > drivers/scsi/ufs/ufshcd.c | 15 +++++++++++++++ > 1 file changed, 15 insertions(+) > Reviewed-by: Hannes Reinecke Cheers, Hannes -- Dr. Hannes Reinecke zSeries & Storage hare@suse.de +49 911 74053 688 SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)