Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932598AbWCWLxc (ORCPT ); Thu, 23 Mar 2006 06:53:32 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751469AbWCWLxc (ORCPT ); Thu, 23 Mar 2006 06:53:32 -0500 Received: from cust8446.nsw01.dataco.com.au ([203.171.93.254]:22159 "EHLO cust8446.nsw01.dataco.com.au") by vger.kernel.org with ESMTP id S1750730AbWCWLxb (ORCPT ); Thu, 23 Mar 2006 06:53:31 -0500 From: Nigel Cunningham Organization: Cyclades Corporation To: linux-kernel@vger.kernel.org Subject: [PATCH] Make libata not powerdown drivers on PM_EVENT_FREEZE. Date: Thu, 23 Mar 2006 21:51:41 +1000 User-Agent: KMail/1.9.1 MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1387271.NHcumxUeZK"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200603232151.47346.ncunningham@cyclades.com> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 5007 Lines: 133 --nextPart1387271.NHcumxUeZK Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline Hi. At the moment libata doesn't pass pm_message_t down ata_device_suspend. This causes drives to be powered down when we just want a freeze, causing unnecessary wear and tear. This patch gets pm_message_t passed down so that it can be used to determine whether to power down the drive. Prepared against git at the time of writing. Please apply. Signed-off-by: Nigel Cunningham drivers/scsi/libata-core.c | 5 +++-- drivers/scsi/libata-scsi.c | 2 +- drivers/scsi/scsi_sysfs.c | 2 +- include/linux/libata.h | 4 ++-- include/scsi/scsi_host.h | 2 +- 5 files changed, 8 insertions(+), 7 deletions(-) diff -ruNp 9904-libata-freeze.patch-old/drivers/scsi/libata-core.c 9904-lib= ata-freeze.patch-new/drivers/scsi/libata-core.c =2D-- 9904-libata-freeze.patch-old/drivers/scsi/libata-core.c 2006-03-23 21= :49:06.000000000 +1000 +++ 9904-libata-freeze.patch-new/drivers/scsi/libata-core.c 2006-03-23 21:1= 6:55.000000000 +1000 @@ -4506,14 +4506,15 @@ int ata_device_resume(struct ata_port *a * Flush the cache on the drive, if appropriate, then issue a * standbynow command. */ =2Dint ata_device_suspend(struct ata_port *ap, struct ata_device *dev) +int ata_device_suspend(struct ata_port *ap, struct ata_device *dev, pm_mes= sage_t state) { if (!ata_dev_present(dev)) return 0; if (dev->class =3D=3D ATA_DEV_ATA) ata_flush_cache(ap, dev); =20 =2D ata_standby_drive(ap, dev); + if (state.event !=3D PM_EVENT_FREEZE) + ata_standby_drive(ap, dev); ap->flags |=3D ATA_FLAG_SUSPENDED; return 0; } diff -ruNp 9904-libata-freeze.patch-old/drivers/scsi/libata-scsi.c 9904-lib= ata-freeze.patch-new/drivers/scsi/libata-scsi.c =2D-- 9904-libata-freeze.patch-old/drivers/scsi/libata-scsi.c 2006-03-23 21= :16:22.000000000 +1000 +++ 9904-libata-freeze.patch-new/drivers/scsi/libata-scsi.c 2006-03-23 21:2= 4:06.000000000 +1000 @@ -419,7 +419,7 @@ int ata_scsi_device_suspend(struct scsi_ struct ata_port *ap =3D (struct ata_port *) &sdev->host->hostdata[0]; struct ata_device *dev =3D &ap->device[sdev->id]; =20 =2D return ata_device_suspend(ap, dev); + return ata_device_suspend(ap, dev, state); } =20 /** diff -ruNp 9904-libata-freeze.patch-old/drivers/scsi/scsi_sysfs.c 9904-liba= ta-freeze.patch-new/drivers/scsi/scsi_sysfs.c =2D-- 9904-libata-freeze.patch-old/drivers/scsi/scsi_sysfs.c 2006-03-23 14:= 49:53.000000000 +1000 +++ 9904-libata-freeze.patch-new/drivers/scsi/scsi_sysfs.c 2006-03-23 21:08= :01.000000000 +1000 @@ -286,7 +286,7 @@ static int scsi_bus_suspend(struct devic return err; =20 if (sht->suspend) =2D err =3D sht->suspend(sdev); + err =3D sht->suspend(sdev, state); =20 return err; } diff -ruNp 9904-libata-freeze.patch-old/include/linux/libata.h 9904-libata-= freeze.patch-new/include/linux/libata.h =2D-- 9904-libata-freeze.patch-old/include/linux/libata.h 2006-03-23 14:50:= 10.000000000 +1000 +++ 9904-libata-freeze.patch-new/include/linux/libata.h 2006-03-23 21:23:31= =2E000000000 +1000 @@ -515,9 +515,9 @@ extern void ata_eh_qc_retry(struct ata_q extern int ata_scsi_release(struct Scsi_Host *host); extern unsigned int ata_host_intr(struct ata_port *ap, struct ata_queued_c= md *qc); extern int ata_scsi_device_resume(struct scsi_device *); =2Dextern int ata_scsi_device_suspend(struct scsi_device *); +extern int ata_scsi_device_suspend(struct scsi_device *, pm_message_t stat= e); extern int ata_device_resume(struct ata_port *, struct ata_device *); =2Dextern int ata_device_suspend(struct ata_port *, struct ata_device *); +extern int ata_device_suspend(struct ata_port *, struct ata_device *, pm_m= essage_t state); extern int ata_ratelimit(void); extern unsigned int ata_busy_sleep(struct ata_port *ap, unsigned long timeout_pat, diff -ruNp 9904-libata-freeze.patch-old/include/scsi/scsi_host.h 9904-libat= a-freeze.patch-new/include/scsi/scsi_host.h =2D-- 9904-libata-freeze.patch-old/include/scsi/scsi_host.h 2006-03-23 14:5= 0:12.000000000 +1000 +++ 9904-libata-freeze.patch-new/include/scsi/scsi_host.h 2006-03-23 21:08:= 57.000000000 +1000 @@ -286,7 +286,7 @@ struct scsi_host_template { * suspend support */ int (*resume)(struct scsi_device *); =2D int (*suspend)(struct scsi_device *); + int (*suspend)(struct scsi_device *, pm_message_t state); =20 /* * Name of proc directory --nextPart1387271.NHcumxUeZK Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (GNU/Linux) iD8DBQBEIovTN0y+n1M3mo0RAvKcAJ9VFchk41PY2rPIXSw6niAk3JdPFgCfcOVa SC1xa9tt8Ti1ILHT2IpsRsQ= =FdCo -----END PGP SIGNATURE----- --nextPart1387271.NHcumxUeZK-- - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/