On Thu, 2007-05-03 at 17:20 -0700, Andrew Morton wrote:
> (Switching to email - please use reply-to-all)
> 
> On Thu, 3 May 2007 15:26:41 -0700
> [EMAIL PROTECTED] wrote:
> 
> > http://bugzilla.kernel.org/show_bug.cgi?id=8426
> > 
> >            Summary: massive slowdown on SCSI CD/DVD drive connected to
> >                     mptspi driver
> >     Kernel Version: 2.6.21
> >             Status: NEW
> >           Severity: high
> >              Owner: [EMAIL PROTECTED]
> >          Submitter: [EMAIL PROTECTED]
> > 
> > 
> > Most recent kernel where this bug did *NOT* occur:
> > 2.6.20
> > 
> > Distribution:
> > fedora 7 - test 4
> > seen with fedora kernel and stock upstream 2.6.21 kernel as well
> > 
> > Hardware Environment:
> > HP Integrity Superdome
> > NEC  DVD_RW ND-3540A
> > LSI Fusion MPT SPI SCSI adapter
> > 
> > also on:
> > HP Integrity rx8640
> > NEC DVD+RW ND-2100AD
> > 
> > 
> > Software Environment: fedora 7 test 4
> > 
> > Problem Description:
> > Reading CD/DVD is approx 150times slower than usual.  Simple test of:
> > time cat kernel-2.6.20-1.3088.fc7.ia64.rpm > /dev/null
> > 
> > took approx 10 minutes on 2.6.21, took 2-4 seconds on 2.6.20 (same system, 
> > same
> > disk, repeated multiple times to ensure it wasn't bad hardware)
> > 
> > 
> > Steps to reproduce:
> > mount a DVD
> > read a large file from the DVD
> > 
> > 
> > Appears to have been caused by this git commit:
> 
> Thanks heaps for doing the bisection - it really helps.
> 
> > commit 5a9c47b1344b514758d5d7f193c672850390cc36
> > Author: Eric Moore <[EMAIL PROTECTED]>
> > Date:   Mon Jan 29 09:43:17 2007 -0700
> > 
> >     [SCSI] fusion - move SPI API over to mptspi.c
> > 
> >     Move some functions that only apply to the mptspi module over from 
> > mptscsih.
> >     Signed-off-by: Eric Moore <[EMAIL PROTECTED]>
> >     Signed-off-by: James Bottomley <[EMAIL PROTECTED]>
> > 
> > 
> > I backed out this patch against the current HEAD and DVD drive performance 
> > is
> > back to normal.  I have not yet looked into this to determine exactly what 
> > in
> > this patch caused the issue.
> 
> That's a bit surprising - all the patch allegedly does is move stuff
> around.  Here's my version of a backout patch against 2.6.21 - can anyone
> spot any bloopers in it?
> 
> 
>  drivers/message/fusion/mptscsih.c |  284 ++++++++++++++++++++++++++++
>  drivers/message/fusion/mptspi.c   |  268 --------------------------
>  2 files changed, 285 insertions(+), 267 deletions(-)
> 
> diff -puN 
> drivers/message/fusion/mptscsih.c~revert-fusion-move-spi-api-over-to-mptspic 
> drivers/message/fusion/mptscsih.c
> --- 
> a/drivers/message/fusion/mptscsih.c~revert-fusion-move-spi-api-over-to-mptspic
> +++ a/drivers/message/fusion/mptscsih.c
> @@ -98,6 +98,9 @@ static int  mptscsih_IssueTaskMgmt(MPT_SC
>  int          mptscsih_ioc_reset(MPT_ADAPTER *ioc, int post_reset);
>  int          mptscsih_event_process(MPT_ADAPTER *ioc, 
> EventNotificationReply_t *pEvReply);
>  
> +static void  mptscsih_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget, 
> struct scsi_device *sdev);
> +static void  mptscsih_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget 
> *vtarget, struct scsi_device *sdev);
> +static int   mptscsih_writeIOCPage4(MPT_SCSI_HOST *hd, int channel, int id);
>  int          mptscsih_scandv_complete(MPT_ADAPTER *ioc, MPT_FRAME_HDR *mf, 
> MPT_FRAME_HDR *r);
>  static int   mptscsih_do_cmd(MPT_SCSI_HOST *hd, INTERNAL_CMD *iocmd);
>  static void  mptscsih_synchronize_cache(MPT_SCSI_HOST *hd, VirtDevice 
> *vdevice);
> @@ -2410,6 +2413,7 @@ mptscsih_slave_configure(struct scsi_dev
>       }
>  
>       vdevice->configured_lun = 1;
> +     mptscsih_initTarget(hd, vtarget, sdev);
>       mptscsih_change_queue_depth(sdev, MPT_SCSI_CMD_PER_DEV_HIGH);
>  
>       dsprintk((MYIOC_s_INFO_FMT
> @@ -2673,6 +2677,286 @@ mptscsih_event_process(MPT_ADAPTER *ioc,
>  
>  
> /*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
>  /*
> + *   mptscsih_initTarget - Target, LUN alloc/free functionality.
> + *   @hd: Pointer to MPT_SCSI_HOST structure
> + *   @vtarget: per target private data
> + *   @sdev: SCSI device
> + *
> + *   NOTE: It's only SAFE to call this routine if data points to
> + *   sane & valid STANDARD INQUIRY data!
> + *
> + *   Allocate and initialize memory for this target.
> + *   Save inquiry data.
> + *
> + */
> +static void
> +mptscsih_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget,
> +                 struct scsi_device *sdev)
> +{
> +     dinitprintk((MYIOC_s_INFO_FMT "initTarget channel=%d id=%d lun=%d 
> hd=%p\n",
> +             hd->ioc->name, vtarget->channel, vtarget->id,
> +             sdev->lun, hd));
> +
> +     /* Is LUN supported? If so, upper 2 bits will be 0
> +     * in first byte of inquiry data.
> +     */
> +     if (sdev->inq_periph_qual != 0)
> +             return;
> +
> +     if (vtarget == NULL)
> +             return;
> +
> +     vtarget->type = sdev->type;
> +
> +     if (hd->ioc->bus_type != SPI)
> +             return;
> +
> +     if ((sdev->type == TYPE_PROCESSOR) && (hd->ioc->spi_data.Saf_Te)) {
> +             /* Treat all Processors as SAF-TE if
> +              * command line option is set */
> +             vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
> +             mptscsih_writeIOCPage4(hd, vtarget->channel, vtarget->id);
> +     }else if ((sdev->type == TYPE_PROCESSOR) &&
> +             !(vtarget->tflags & MPT_TARGET_FLAGS_SAF_TE_ISSUED )) {
> +             if (sdev->inquiry_len > 49 ) {
> +                     if (sdev->inquiry[44] == 'S' &&
> +                         sdev->inquiry[45] == 'A' &&
> +                         sdev->inquiry[46] == 'F' &&
> +                         sdev->inquiry[47] == '-' &&
> +                         sdev->inquiry[48] == 'T' &&
> +                         sdev->inquiry[49] == 'E' ) {
> +                             vtarget->tflags |= 
> MPT_TARGET_FLAGS_SAF_TE_ISSUED;
> +                             mptscsih_writeIOCPage4(hd, vtarget->channel, 
> vtarget->id);
> +                     }
> +             }
> +     }
> +     mptscsih_setTargetNegoParms(hd, vtarget, sdev);
> +}
> +
> +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
> +/*
> + *  Update the target negotiation parameters based on the
> + *  the Inquiry data, adapter capabilities, and NVRAM settings.
> + *
> + */
> +static void
> +mptscsih_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget *target,
> +                         struct scsi_device *sdev)
> +{
> +     SpiCfgData *pspi_data = &hd->ioc->spi_data;
> +     int  id = (int) target->id;
> +     int  nvram;
> +     u8 width = MPT_NARROW;
> +     u8 factor = MPT_ASYNC;
> +     u8 offset = 0;
> +     u8 nfactor;
> +     u8 noQas = 1;
> +
> +     target->negoFlags = pspi_data->noQas;
> +
> +     /* noQas == 0 => device supports QAS. */
> +
> +     if (sdev->scsi_level < SCSI_2) {
> +             width = 0;
> +             factor = MPT_ULTRA2;
> +             offset = pspi_data->maxSyncOffset;
> +             target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
> +     } else {
> +             if (scsi_device_wide(sdev)) {
> +                     width = 1;
> +             }
> +
> +             if (scsi_device_sync(sdev)) {
> +                     factor = pspi_data->minSyncFactor;
> +                     if (!scsi_device_dt(sdev))
> +                                     factor = MPT_ULTRA2;
> +                     else {
> +                             if (!scsi_device_ius(sdev) &&
> +                                 !scsi_device_qas(sdev))
> +                                     factor = MPT_ULTRA160;
> +                             else {
> +                                     factor = MPT_ULTRA320;
> +                                     if (scsi_device_qas(sdev)) {
> +                                             ddvtprintk((KERN_INFO "Enabling 
> QAS due to byte56=%02x on id=%d!\n", scsi_device_qas(sdev), id));
> +                                             noQas = 0;
> +                                     }
> +                                     if (sdev->type == TYPE_TAPE &&
> +                                         scsi_device_ius(sdev))
> +                                             target->negoFlags |= 
> MPT_TAPE_NEGO_IDP;
> +                             }
> +                     }
> +                     offset = pspi_data->maxSyncOffset;
> +
> +                     /* If RAID, never disable QAS
> +                      * else if non RAID, do not disable
> +                      *   QAS if bit 1 is set
> +                      * bit 1 QAS support, non-raid only
> +                      * bit 0 IU support
> +                      */
> +                     if (target->raidVolume == 1) {
> +                             noQas = 0;
> +                     }
> +             } else {
> +                     factor = MPT_ASYNC;
> +                     offset = 0;
> +             }
> +     }
> +
> +     if (!sdev->tagged_supported) {
> +             target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
> +     }
> +
> +     /* Update tflags based on NVRAM settings. (SCSI only)
> +      */
> +     if (pspi_data->nvram && (pspi_data->nvram[id] != 
> MPT_HOST_NVRAM_INVALID)) {
> +             nvram = pspi_data->nvram[id];
> +             nfactor = (nvram & MPT_NVRAM_SYNC_MASK) >> 8;
> +
> +             if (width)
> +                     width = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
> +
> +             if (offset > 0) {
> +                     /* Ensure factor is set to the
> +                      * maximum of: adapter, nvram, inquiry
> +                      */
> +                     if (nfactor) {
> +                             if (nfactor < pspi_data->minSyncFactor )
> +                                     nfactor = pspi_data->minSyncFactor;
> +
> +                             factor = max(factor, nfactor);
> +                             if (factor == MPT_ASYNC)
> +                                     offset = 0;
> +                     } else {
> +                             offset = 0;
> +                             factor = MPT_ASYNC;
> +             }
> +             } else {
> +                     factor = MPT_ASYNC;
> +             }
> +     }
> +
> +     /* Make sure data is consistent
> +      */
> +     if ((!width) && (factor < MPT_ULTRA2)) {
> +             factor = MPT_ULTRA2;
> +     }
> +
> +     /* Save the data to the target structure.
> +      */
> +     target->minSyncFactor = factor;
> +     target->maxOffset = offset;
> +     target->maxWidth = width;
> +
> +     target->tflags |= MPT_TARGET_FLAGS_VALID_NEGO;
> +
> +     /* Disable unused features.
> +      */
> +     if (!width)
> +             target->negoFlags |= MPT_TARGET_NO_NEGO_WIDE;
> +
> +     if (!offset)
> +             target->negoFlags |= MPT_TARGET_NO_NEGO_SYNC;
> +
> +     if ( factor > MPT_ULTRA320 )
> +             noQas = 0;
> +
> +     if (noQas && (pspi_data->noQas == 0)) {
> +             pspi_data->noQas |= MPT_TARGET_NO_NEGO_QAS;
> +             target->negoFlags |= MPT_TARGET_NO_NEGO_QAS;
> +
> +             /* Disable QAS in a mixed configuration case
> +              */
> +
> +             ddvtprintk((KERN_INFO "Disabling QAS due to noQas=%02x on 
> id=%d!\n", noQas, id));
> +     }
> +}
> +
> +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
> +
> +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
> +/*
> + *  SCSI Config Page functionality ...
> + */
> +
> +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
> +/*   mptscsih_writeIOCPage4  - write IOC Page 4
> + *   @hd: Pointer to a SCSI Host Structure
> + *   @channel: write IOC Page4 for this Bus
> + *   @id: write IOC Page4 for this ID
> + *
> + *   Return: -EAGAIN if unable to obtain a Message Frame
> + *           or 0 if success.
> + *
> + *   Remark: We do not wait for a return, write pages sequentially.
> + */
> +static int
> +mptscsih_writeIOCPage4(MPT_SCSI_HOST *hd, int channel, int id)
> +{
> +     MPT_ADAPTER             *ioc = hd->ioc;
> +     Config_t                *pReq;
> +     IOCPage4_t              *IOCPage4Ptr;
> +     MPT_FRAME_HDR           *mf;
> +     dma_addr_t               dataDma;
> +     u16                      req_idx;
> +     u32                      frameOffset;
> +     u32                      flagsLength;
> +     int                      ii;
> +
> +     /* Get a MF for this command.
> +      */
> +     if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
> +             dfailprintk((MYIOC_s_WARN_FMT "writeIOCPage4 : no msg 
> frames!\n",
> +                                     ioc->name));
> +             return -EAGAIN;
> +     }
> +
> +     /* Set the request and the data pointers.
> +      * Place data at end of MF.
> +      */
> +     pReq = (Config_t *)mf;
> +
> +     req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
> +     frameOffset = ioc->req_sz - sizeof(IOCPage4_t);
> +
> +     /* Complete the request frame (same for all requests).
> +      */
> +     pReq->Action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
> +     pReq->Reserved = 0;
> +     pReq->ChainOffset = 0;
> +     pReq->Function = MPI_FUNCTION_CONFIG;
> +     pReq->ExtPageLength = 0;
> +     pReq->ExtPageType = 0;
> +     pReq->MsgFlags = 0;
> +     for (ii=0; ii < 8; ii++) {
> +             pReq->Reserved2[ii] = 0;
> +     }
> +
> +     IOCPage4Ptr = ioc->spi_data.pIocPg4;
> +     dataDma = ioc->spi_data.IocPg4_dma;
> +     ii = IOCPage4Ptr->ActiveSEP++;
> +     IOCPage4Ptr->SEP[ii].SEPTargetID = id;
> +     IOCPage4Ptr->SEP[ii].SEPBus = channel;
> +     pReq->Header = IOCPage4Ptr->Header;
> +     pReq->PageAddress = cpu_to_le32(id | (channel << 8 ));
> +
> +     /* Add a SGE to the config request.
> +      */
> +     flagsLength = MPT_SGE_FLAGS_SSIMPLE_WRITE |
> +             (IOCPage4Ptr->Header.PageLength + ii) * 4;
> +
> +     mpt_add_sge((char *)&pReq->PageBufferSGE, flagsLength, dataDma);
> +
> +     dinitprintk((MYIOC_s_INFO_FMT
> +             "writeIOCPage4: MaxSEP=%d ActiveSEP=%d channel=%d id=%d \n",
> +                     ioc->name, IOCPage4Ptr->MaxSEP, IOCPage4Ptr->ActiveSEP, 
> channel, id));
> +
> +     mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
> +
> +     return 0;
> +}
> +
> +/*=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=*/
> +/*
>   *  Bus Scan and Domain Validation functionality ...
>   */
>  
> diff -puN 
> drivers/message/fusion/mptspi.c~revert-fusion-move-spi-api-over-to-mptspic 
> drivers/message/fusion/mptspi.c
> --- 
> a/drivers/message/fusion/mptspi.c~revert-fusion-move-spi-api-over-to-mptspic
> +++ a/drivers/message/fusion/mptspi.c
> @@ -95,269 +95,6 @@ static int        mptspiDoneCtx = -1;
>  static int   mptspiTaskCtx = -1;
>  static int   mptspiInternalCtx = -1; /* Used only for internal commands */
>  
> -/**
> - *   mptspi_setTargetNegoParms  - Update the target negotiation
> - *   parameters based on the the Inquiry data, adapter capabilities,
> - *   and NVRAM settings
> - *
> - *   @hd: Pointer to a SCSI Host Structure
> - *   @vtarget: per target private data
> - *   @sdev: SCSI device
> - *
> - **/
> -static void
> -mptspi_setTargetNegoParms(MPT_SCSI_HOST *hd, VirtTarget *target,
> -                         struct scsi_device *sdev)
> -{
> -     SpiCfgData *pspi_data = &hd->ioc->spi_data;
> -     int  id = (int) target->id;
> -     int  nvram;
> -     u8 width = MPT_NARROW;
> -     u8 factor = MPT_ASYNC;
> -     u8 offset = 0;
> -     u8 nfactor;
> -     u8 noQas = 1;
> -
> -     target->negoFlags = pspi_data->noQas;
> -
> -     if (sdev->scsi_level < SCSI_2) {
> -             width = 0;
> -             factor = MPT_ULTRA2;
> -             offset = pspi_data->maxSyncOffset;
> -             target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
> -     } else {
> -             if (scsi_device_wide(sdev))
> -                     width = 1;
> -
> -             if (scsi_device_sync(sdev)) {
> -                     factor = pspi_data->minSyncFactor;
> -                     if (!scsi_device_dt(sdev))
> -                                     factor = MPT_ULTRA2;
> -                     else {
> -                             if (!scsi_device_ius(sdev) &&
> -                                 !scsi_device_qas(sdev))
> -                                     factor = MPT_ULTRA160;
> -                             else {
> -                                     factor = MPT_ULTRA320;
> -                                     if (scsi_device_qas(sdev)) {
> -                                             ddvprintk((KERN_INFO "Enabling 
> QAS due to byte56=%02x on id=%d!\n", scsi_device_qas(sdev), id));
> -                                             noQas = 0;
> -                                     }
> -                                     if (sdev->type == TYPE_TAPE &&
> -                                         scsi_device_ius(sdev))
> -                                             target->negoFlags |= 
> MPT_TAPE_NEGO_IDP;
> -                             }
> -                     }
> -                     offset = pspi_data->maxSyncOffset;
> -
> -                     /* If RAID, never disable QAS
> -                      * else if non RAID, do not disable
> -                      *   QAS if bit 1 is set
> -                      * bit 1 QAS support, non-raid only
> -                      * bit 0 IU support
> -                      */
> -                     if (target->raidVolume == 1)
> -                             noQas = 0;
> -             } else {
> -                     factor = MPT_ASYNC;
> -                     offset = 0;
> -             }
> -     }
> -
> -     if (!sdev->tagged_supported)
> -             target->tflags &= ~MPT_TARGET_FLAGS_Q_YES;
> -
> -     /* Update tflags based on NVRAM settings. (SCSI only)
> -      */
> -     if (pspi_data->nvram && (pspi_data->nvram[id] != 
> MPT_HOST_NVRAM_INVALID)) {
> -             nvram = pspi_data->nvram[id];
> -             nfactor = (nvram & MPT_NVRAM_SYNC_MASK) >> 8;
> -
> -             if (width)
> -                     width = nvram & MPT_NVRAM_WIDE_DISABLE ? 0 : 1;
> -
> -             if (offset > 0) {
> -                     /* Ensure factor is set to the
> -                      * maximum of: adapter, nvram, inquiry
> -                      */
> -                     if (nfactor) {
> -                             if (nfactor < pspi_data->minSyncFactor )
> -                                     nfactor = pspi_data->minSyncFactor;
> -
> -                             factor = max(factor, nfactor);
> -                             if (factor == MPT_ASYNC)
> -                                     offset = 0;
> -                     } else {
> -                             offset = 0;
> -                             factor = MPT_ASYNC;
> -             }
> -             } else {
> -                     factor = MPT_ASYNC;
> -             }
> -     }
> -
> -     /* Make sure data is consistent
> -      */
> -     if ((!width) && (factor < MPT_ULTRA2))
> -             factor = MPT_ULTRA2;
> -
> -     /* Save the data to the target structure.
> -      */
> -     target->minSyncFactor = factor;
> -     target->maxOffset = offset;
> -     target->maxWidth = width;
> -
> -     target->tflags |= MPT_TARGET_FLAGS_VALID_NEGO;
> -
> -     /* Disable unused features.
> -      */
> -     if (!width)
> -             target->negoFlags |= MPT_TARGET_NO_NEGO_WIDE;
> -
> -     if (!offset)
> -             target->negoFlags |= MPT_TARGET_NO_NEGO_SYNC;
> -
> -     if ( factor > MPT_ULTRA320 )
> -             noQas = 0;
> -
> -     if (noQas && (pspi_data->noQas == 0)) {
> -             pspi_data->noQas |= MPT_TARGET_NO_NEGO_QAS;
> -             target->negoFlags |= MPT_TARGET_NO_NEGO_QAS;
> -
> -             /* Disable QAS in a mixed configuration case
> -              */
> -
> -             ddvprintk((KERN_INFO "Disabling QAS due to noQas=%02x on 
> id=%d!\n", noQas, id));
> -     }
> -}
> -
> -/**
> - *   mptspi_writeIOCPage4  - write IOC Page 4
> - *   @hd: Pointer to a SCSI Host Structure
> - *   @channel:
> - *   @id: write IOC Page4 for this ID & Bus
> - *
> - *   Return: -EAGAIN if unable to obtain a Message Frame
> - *           or 0 if success.
> - *
> - *   Remark: We do not wait for a return, write pages sequentially.
> - **/
> -static int
> -mptspi_writeIOCPage4(MPT_SCSI_HOST *hd, u8 channel , u8 id)
> -{
> -     MPT_ADAPTER             *ioc = hd->ioc;
> -     Config_t                *pReq;
> -     IOCPage4_t              *IOCPage4Ptr;
> -     MPT_FRAME_HDR           *mf;
> -     dma_addr_t               dataDma;
> -     u16                      req_idx;
> -     u32                      frameOffset;
> -     u32                      flagsLength;
> -     int                      ii;
> -
> -     /* Get a MF for this command.
> -      */
> -     if ((mf = mpt_get_msg_frame(ioc->DoneCtx, ioc)) == NULL) {
> -             dfailprintk((MYIOC_s_WARN_FMT "writeIOCPage4 : no msg 
> frames!\n",
> -                                     ioc->name));
> -             return -EAGAIN;
> -     }
> -
> -     /* Set the request and the data pointers.
> -      * Place data at end of MF.
> -      */
> -     pReq = (Config_t *)mf;
> -
> -     req_idx = le16_to_cpu(mf->u.frame.hwhdr.msgctxu.fld.req_idx);
> -     frameOffset = ioc->req_sz - sizeof(IOCPage4_t);
> -
> -     /* Complete the request frame (same for all requests).
> -      */
> -     pReq->Action = MPI_CONFIG_ACTION_PAGE_WRITE_CURRENT;
> -     pReq->Reserved = 0;
> -     pReq->ChainOffset = 0;
> -     pReq->Function = MPI_FUNCTION_CONFIG;
> -     pReq->ExtPageLength = 0;
> -     pReq->ExtPageType = 0;
> -     pReq->MsgFlags = 0;
> -     for (ii=0; ii < 8; ii++) {
> -             pReq->Reserved2[ii] = 0;
> -     }
> -
> -     IOCPage4Ptr = ioc->spi_data.pIocPg4;
> -     dataDma = ioc->spi_data.IocPg4_dma;
> -     ii = IOCPage4Ptr->ActiveSEP++;
> -     IOCPage4Ptr->SEP[ii].SEPTargetID = id;
> -     IOCPage4Ptr->SEP[ii].SEPBus = channel;
> -     pReq->Header = IOCPage4Ptr->Header;
> -     pReq->PageAddress = cpu_to_le32(id | (channel << 8 ));
> -
> -     /* Add a SGE to the config request.
> -      */
> -     flagsLength = MPT_SGE_FLAGS_SSIMPLE_WRITE |
> -             (IOCPage4Ptr->Header.PageLength + ii) * 4;
> -
> -     mpt_add_sge((char *)&pReq->PageBufferSGE, flagsLength, dataDma);
> -
> -     ddvprintk((MYIOC_s_INFO_FMT
> -             "writeIOCPage4: MaxSEP=%d ActiveSEP=%d id=%d bus=%d\n",
> -                     ioc->name, IOCPage4Ptr->MaxSEP, IOCPage4Ptr->ActiveSEP, 
> id, channel));
> -
> -     mpt_put_msg_frame(ioc->DoneCtx, ioc, mf);
> -
> -     return 0;
> -}
> -
> -/**
> - *   mptspi_initTarget - Target, LUN alloc/free functionality.
> - *   @hd: Pointer to MPT_SCSI_HOST structure
> - *   @vtarget: per target private data
> - *   @sdev: SCSI device
> - *
> - *   NOTE: It's only SAFE to call this routine if data points to
> - *   sane & valid STANDARD INQUIRY data!
> - *
> - *   Allocate and initialize memory for this target.
> - *   Save inquiry data.
> - *
> - **/
> -static void
> -mptspi_initTarget(MPT_SCSI_HOST *hd, VirtTarget *vtarget,
> -                 struct scsi_device *sdev)
> -{
> -
> -     /* Is LUN supported? If so, upper 2 bits will be 0
> -     * in first byte of inquiry data.
> -     */
> -     if (sdev->inq_periph_qual != 0)
> -             return;
> -
> -     if (vtarget == NULL)
> -             return;
> -
> -     vtarget->type = sdev->type;
> -
> -     if ((sdev->type == TYPE_PROCESSOR) && (hd->ioc->spi_data.Saf_Te)) {
> -             /* Treat all Processors as SAF-TE if
> -              * command line option is set */
> -             vtarget->tflags |= MPT_TARGET_FLAGS_SAF_TE_ISSUED;
> -             mptspi_writeIOCPage4(hd, vtarget->channel, vtarget->id);
> -     }else if ((sdev->type == TYPE_PROCESSOR) &&
> -             !(vtarget->tflags & MPT_TARGET_FLAGS_SAF_TE_ISSUED )) {
> -             if (sdev->inquiry_len > 49 ) {
> -                     if (sdev->inquiry[44] == 'S' &&
> -                         sdev->inquiry[45] == 'A' &&
> -                         sdev->inquiry[46] == 'F' &&
> -                         sdev->inquiry[47] == '-' &&
> -                         sdev->inquiry[48] == 'T' &&
> -                         sdev->inquiry[49] == 'E' ) {
> -                             vtarget->tflags |= 
> MPT_TARGET_FLAGS_SAF_TE_ISSUED;
> -                             mptspi_writeIOCPage4(hd, vtarget->channel, 
> vtarget->id);
> -                     }
> -             }
> -     }
> -     mptspi_setTargetNegoParms(hd, vtarget, sdev);
> -}
>  
>  /**
>   *   mptspi_is_raid - Determines whether target is belonging to volume
> @@ -723,16 +460,13 @@ static int mptspi_slave_alloc(struct scs
>  
>  static int mptspi_slave_configure(struct scsi_device *sdev)
>  {
> +     int ret = mptscsih_slave_configure(sdev);
>       struct _MPT_SCSI_HOST *hd =
>               (struct _MPT_SCSI_HOST *)sdev->host->hostdata;
> -     VirtTarget *vtarget = scsi_target(sdev)->hostdata;
> -     int ret = mptscsih_slave_configure(sdev);
>  
>       if (ret)
>               return ret;
>  
> -     mptspi_initTarget(hd, vtarget, sdev);
> -
>       ddvprintk((MYIOC_s_INFO_FMT "id=%d min_period=0x%02x"
>               " max_offset=0x%02x max_width=%d\n", hd->ioc->name,
>               sdev->id, spi_min_period(scsi_target(sdev)),
> _
> 

ACK, tested this on my system where I originally found the problem and
all is well with this.

Ignore my earlier comment about the original patch adding the new
function mptspi_initTarget.  After looking at what is going on I realize
that it didn't add this, it was just renamed from mptscsih_initTarget.

- Doug


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