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path: root/drivers/scsi/ide-scsi.c (follow)
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2008-07-16IDE: Remove unused codeElias Oltmanns1-14/+0
Remove some code which has been made obsolete and hasn't worked properly before anyway. Part of the infrastructure may be reintroduced in a follow up patch to implement a working command aborting facility. Signed-off-by: Elias Oltmanns <eo@nebensachen.de> Cc: "Alan Cox" <alan@lxorguk.ukuu.org.uk> Cc: "Randy Dunlap" <randy.dunlap@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: add ide_pc_intr() helperBartlomiej Zolnierkiewicz1-112/+3
* ide-tape.c: add 'drive' argument to idetape_update_buffers(). * Add generic ide_pc_intr() helper to ide-atapi.c and then convert ide-{floppy,tape,scsi} device drivers to use it. * ide-tape.c: remove no longer needed DBG_PC_INTR. There should be no functional changes caused by this patch (unless the debugging is explicitely compiled in). Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-{floppy,scsi}: read Status Register before stopping DMA engineBartlomiej Zolnierkiewicz1-3/+4
Read Status Register before stopping DMA engine to match ide-tape device driver - it should be safe and shouldn't affect anything. This is a preparation for adding generic ide_pc_intr() helper. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: add more debugging to idescsi_pc_intr()Bartlomiej Zolnierkiewicz1-2/+11
Add more debugging to idescsi_pc_intr() to match ide-tape's idetape_pc_intr(). While at it: * Correct the first debug message. This is a preparation for adding generic ide_pc_intr() helper. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: use pc->callbackBartlomiej Zolnierkiewicz1-10/+22
* Add ide_scsi_callback() pc->callback implementation, then update idescsi_check_condition() and idescsi_queue() to setup ->callback. * Convert idescsi_pc_intr() to use pc->callback. This is a preparation for adding generic ide_pc_intr() helper. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: add ide_issue_pc() helperBartlomiej Zolnierkiewicz1-28/+2
Add generic ide_issue_pc() helper to ide-atapi.c and then convert ide-{floppy,tape,scsi} device drivers to use it. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: add PC_FLAG_DRQ_INTERRUPT pc flagBartlomiej Zolnierkiewicz1-1/+5
Add PC_FLAG_DRQ_INTERRUPT pc flag, set it in ide*_do_request() and check for it (instead of checking for IDE*_FLAG_DRQ_INTERRUPT) in ide*_issue_pc(). This is a preparation for adding generic ide_issue_pc() helper. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: move idescsi_map_sg() call out from idescsi_issue_pc()Bartlomiej Zolnierkiewicz1-6/+10
Move idescsi_map_sg() call out from idescsi_issue_pc() to idescsi_do_request() as a preparation to adding generic ide_issue_pc() helper. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: add ide_transfer_pc() helperBartlomiej Zolnierkiewicz1-28/+2
* Add ide-atapi.c file for generic ATAPI support together with CONFIG_IDE_ATAPI config option. * Add generic ide_transfer_pc() helper to ide-atapi.c and then convert ide-{floppy,tape,scsi} device drivers to use it. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: set drive->scsi flag for devices handled by the driverBartlomiej Zolnierkiewicz1-0/+5
This is a preparation for adding generic ide_transfer_pc() helper. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-{floppy,tape,scsi}: log device name instead of driver nameBartlomiej Zolnierkiewicz1-11/+13
Log device name instead of driver name in *_pc_intr() and *_transfer_pc*(). While at it: * Merge two consecutive printk()-s in *_pc_intr() together. * Replace "floppy"/"tape"/"scsi" references in printk()-s by "device". Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: add debug_log() macroBartlomiej Zolnierkiewicz1-26/+25
Add debug_log() macro and convert the driver to use it. [ This makes debug messages to be always prefixed with "ide-scsi: " and use KERN_INFO level. ] While at it: * Change "DMA complete" debug message to "DMA finished" to match other ATAPI device drivers. * Use __func__. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: remove superfluous BUG_ON() from idescsi_transfer_pc()Bartlomiej Zolnierkiewicz1-1/+1
ide_set_handler() bugs on ->handler == NULL so no need to do it in idescsi_transfer_pc(). There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: merge idescsi_input_buffers() and idescsi_output_buffers()Bartlomiej Zolnierkiewicz1-57/+24
* Merge idescsi_input_buffers() and idescsi_output_buffers() into ide_scsi_io_buffers() helper. While at it: * Log device name instead of driver name on error. * Use xfer_func_t. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: fix Interrupt Reason checking in idescsi_pc_intr()Bartlomiej Zolnierkiewicz1-6/+11
Set PC_FLAG_WRITING pc flag in idescsi_queue() (if needed) and then fix Interrupt Reason checking in idescsi_pc_intr(). Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: fix handling of DMA errors in idescsi_pc_intr()Bartlomiej Zolnierkiewicz1-3/+5
Check return value of ->dma_end method and if there was a DMA error handle it accordingly (set PC_FLAG_DMA_ERROR pc flag, don't update pc->xferred and increase rq->errors). Also move debug message in the right place while at it. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: fix DRQ checking for DMA transfers in idescsi_pc_intr()Bartlomiej Zolnierkiewicz1-1/+8
If DRQ bit of Status Register is not cleared it is an error condition and should be handled accordingly (disable DMA + reset the device). Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: fix race in idescsi_transfer_pc()Bartlomiej Zolnierkiewicz1-3/+4
Start DMA engine before sending content of packet command (otherwise it is possible that IRQ will happen before DMA engine is started). Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: remove action argument in ide_do_drive_cmdFUJITA Tomonori1-1/+2
ide_do_drive_cmd is called only with ide_preempt action argument. So we can remove the action argument in ide_do_drive_cmd and ide_action_t typedef. This patch also includes two minor cleanups: 1) ide_do_drive_cmd always succeeds so we don't need the return value; 2) the callers use blk_rq_init before ide_do_drive_cmd so there is no need to initialize rq->errors. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide-scsi: replace ide_do_drive_cmd with blk_execute_rq_nowaitFUJITA Tomonori1-2/+1
All the callers of ide_do_drive_cmd() except for ide-scsi use ide_preempt action argument. This converts ide-scsi to use blk_execute_rq_nowait instead of ide_do_drive_cmd so that we can remove the action argument in ide_do_drive_cmd and ide_action_t typedef. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: pass 'hwif *' instead of 'drive *' to ->OUTBSYNC methodBartlomiej Zolnierkiewicz1-1/+1
There should be no functional changes caused by this patch. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: remove IDE_TFLAG_NO_SELECT_MASK taskfile flagBartlomiej Zolnierkiewicz1-1/+1
Always call SELECT_MASK(..., 0) in ide_tf_load() (needs to be done to match ide_set_irq(..., 1)) and then remove IDE_TFLAG_NO_SELECT_MASK taskfile flag. This change should only affect hpt366 and icside host drivers since ->maskproc(..., 0) for sgiioc4 is equivalent to ide_set_irq(..., 1). Cc: Sergei Shtylyov <sshtylyov@ru.mvista.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: remove ide_init_drive_cmdFUJITA Tomonori1-2/+2
ide_init_drive_cmd just calls blk_rq_init. This converts the users of ide_init_drive_cmd to use blk_rq_init directly and removes ide_init_drive_cmd. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-07-15ide: set REQ_PREEMPT request flag in ide_do_drive_cmd() usersBartlomiej Zolnierkiewicz1-0/+1
* Set REQ_PREEMPT request flag in ide_do_drive_cmd() users for ide_preempt and ide_head_wait action types. * Remove setting REQ_PREEMPT from ide_do_drive_cmd(). While at it: * Set 'where' variable outside ide_lock. This is a preparation for converting IDE to use blk_execute_rq(). There should be no functional changes caused by this patch. Cc: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Borislav Petkov <petkovbb@gmail.com> Cc: Jens Axboe <jens.axboe@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-28ide: add ide_pad_transfer() helperBartlomiej Zolnierkiewicz1-3/+3
* Add ide_pad_transfer() helper (which uses ->{in,out}put_data methods internally so the transfer is also padded to drive+host requirements) and use it instead of ide_atapi_{write_zeros,discard_data}(). * Remove no longer needed ide_atapi_{write_zeros,discard_data}(). Cc: Borislav Petkov <petkovbb@gmail.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-28ide: add ide_execute_pkt_cmd() helperBartlomiej Zolnierkiewicz1-3/+1
Add ide_execute_pkt_cmd() helper for executing PACKET command, then convert ATAPI device drivers to use it. As a nice side-effect this fixes ide-{floppy,tape,scsi} w.r.t. ide_lock taking (ide-cd was OK). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-28ide-{floppy,tape,scsi}: 400ns delay is required after executing the commandBartlomiej Zolnierkiewicz1-0/+1
Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-28ide: always use ->OUTBSYNC method for executing commandsBartlomiej Zolnierkiewicz1-2/+4
Always use ->OUTBSYNC method for executing commands so the posting is done if needed (this affects only pmac and scc_pata host drivers at the moment). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-28ide: merge ->atapi_*put_bytes and ->ata_*put_data methodsBartlomiej Zolnierkiewicz1-14/+13
* Merge ->atapi_{in,out}put_bytes and ->ata_{in,out}put_data methods into new ->{in,out}put_data methods which take number of bytes to transfer as an argument and always do padding. While at it: * Use 'hwif' or 'drive->hwif' instead of 'HWIF(drive)'. There should be no functional changes caused by this patch (all users of ->ata_{in,out}put_data methods were using multiply-of-4 word counts). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-27ide: add struct ide_io_ports (take 3)Bartlomiej Zolnierkiewicz1-7/+6
* Add struct ide_io_ports and use it instead of `unsigned long io_ports[]` in ide_hwif_t. * Rename io_ports[] in hw_regs_t to io_ports_array[]. * Use un-named union for 'unsigned long io_ports_array[]' and 'struct ide_io_ports io_ports' in hw_regs_t. * Remove IDE_*_OFFSET defines. v2: * scc_pata.c build fix from Stephen Rothwell. v3: * Fix ctl_adrr typo in Sparc-specific part of ns87415.c. (Noticed by Andrew Morton) Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-26ide: add struct ide_dma_ops (take 3)Bartlomiej Zolnierkiewicz1-3/+3
Add struct ide_dma_ops and convert core code + drivers to use it. While at it: * Drop "ide_" prefix from ->ide_dma_end and ->ide_dma_test_irq methods. * Drop "ide_" "infixes" from DMA methods. * au1xxx-ide.c: - use auide_dma_{test_irq,end}() directly in auide_dma_timeout() * pdc202xx_old.c: - drop "old_" "infixes" from DMA methods * siimage.c: - add siimage_dma_test_irq() helper - print SATA warning in siimage_init_one() * Remove no longer needed ->init_hwif implementations. v2: * Changes based on review from Sergei: - s/siimage_ide_dma_test_irq/siimage_dma_test_irq/ - s/drive->hwif/hwif/ in idefloppy_pc_intr(). - fix patch description w.r.t. au1xxx-ide changes - fix au1xxx-ide build - fix naming for cmd64*_dma_ops - drop "ide_" and "old_" infixes - s/hpt3xxx_dma_ops/hpt37x_dma_ops/ - s/hpt370x_dma_ops/hpt370_dma_ops/ - use correct DMA ops for HPT302/N, HPT371/N and HPT374 - s/it821x_smart_dma_ops/it821x_pass_through_dma_ops/ v3: * Two bugs slipped in v2 (noticed by Sergei): - use correct DMA ops for HPT374 (for real this time) - handle HPT370/HPT370A properly Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide-scsi: do non-atomic pc->flags testingBorislav Petkov1-21/+16
...also, convert ide-scsi to using the generic pc->flags defines. Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide-scsi: convert driver to using generic ide_atapi_pcBorislav Petkov1-71/+62
Signed-off-by: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide: remove IDE_*_REG macrosBartlomiej Zolnierkiewicz1-6/+9
* Add IDE_{ALTSTATUS,IREASON,BCOUNTL,BCOUNTH}_OFFSET defines. * Remove IDE_*_REG macros - this results in more readable and slightly smaller code. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-04-18ide: add ide_atapi_{discard_data,write_zeros} inline helpersBartlomiej Zolnierkiewicz1-15/+3
Add ide_atapi_{discard_data,write_zeros} inline helpers to <linux/ide.h> and use them instead of home-brewn helpers in ide-{floppy,tape,scsi}. There should be no functional changes caused by this patch. Cc: Borislav Petkov <petkovbb@gmail.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-06ide: add ide_read_[alt]status() inline helpersBartlomiej Zolnierkiewicz1-2/+2
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-02ide-scsi: remove needless SELECT_DRIVE() callBartlomiej Zolnierkiewicz1-2/+0
SELECT_DRIVE() is called by IDE core code in start_request() before device driver's ->do_request method. In ide-scsi case ->do_request is implemented by idescsi_do_request() which is also the only user of idescsi_issue_pc(). Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-02ide-scsi: use ide_execute_command()Bartlomiej Zolnierkiewicz1-5/+2
Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-01ide: update/add my CopyrightsBartlomiej Zolnierkiewicz1-1/+2
The last years stuff and a trip down memory lane... Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-02-01ide: delete filenames/versions from commentsBartlomiej Zolnierkiewicz1-2/+0
Delete filenames/versions from comments. I'm leaving decisions about adding DRV_VERSION defines and MODULE_VERSION()-s to maintainers of the respective drivers. While at it: * Remove unused VERSION define from ide.c. * Remove unused/stale DRV_VERSION define from au1xxx-ide.c. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-28blk_end_request: changing ide-scsi (take 4)Kiyoshi Ueda1-4/+4
This patch converts ide-scsi to use blk_end_request interfaces. Related 'uptodate' arguments are converted to 'error'. Cc: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com> Signed-off-by: Kiyoshi Ueda <k-ueda@ct.jp.nec.com> Signed-off-by: Jun'ichi Nomura <j-nomura@ce.jp.nec.com> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
2008-01-25ide: add ide_pktcmd_tf_load() helperBartlomiej Zolnierkiewicz1-5/+1
Add ide_pktcmd_tf_load() helper and convert ATAPI device drivers to use it. There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25ide-{floppy,tape,scsi}: fix register loading order when issuing packet commandBartlomiej Zolnierkiewicz1-1/+1
Load IDE_BCOUNTL_REG before IDE_BCOUNTH_REG when issuing packet command. It shouldn't affect anything (just a usual paranoia to separate changes which change the way in which hardware is accessed from code cleanups). Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25ide: remove atapi_ireason_t (take 3)Bartlomiej Zolnierkiewicz1-9/+8
Remove atapi_ireason_t. While at it: * replace 'HWIF(drive)' by 'drive->hwif' (or just 'hwif' where possible) v2: * v1 had CD and IO bits reversed in many places. * Use CD and IO defines from <linux/hdreg.h>. v3: * Fix incorrect "(ireason & IO) == test_bit()". (Noticed by Sergei) Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25ide: remove ata_nsector_t, ata_data_t and atapi_bcount_tBartlomiej Zolnierkiewicz1-17/+23
Remove ata_nsector_t, ata_data_t (unused) and atapi_bcount_t. While at it: * replace 'HWIF(drive)' by 'hwif' Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25ide: remove atapi_feature_tBartlomiej Zolnierkiewicz1-7/+4
Remove atapi_feature_t. While at it: * replace 'HWIF(drive)' by 'hwif' Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2008-01-25ide: remove ata_status_t and atapi_status_tBartlomiej Zolnierkiewicz1-5/+4
Remove ata_status_t (unused) and atapi_status_t. While at it: * replace 'HWIF(drive)' by 'drive->hwif' (or just 'hwif' where possible) Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-12-12ide-scsi: add ide_scsi_hex_dump() helperBartlomiej Zolnierkiewicz1-8/+9
Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Denis Cheng <crquan@gmail.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-11-27ide-scsi: use print_hex_dump from <linux/kernel.h>Denis Cheng1-14/+8
these utilities implemented in lib/hexdump.c are more handy, please use this. Bart: - s/KERN_DEBUG/KERN_CONT/ as pointed out by Randy - s/DUMP_PREFIX_OFFSET/DUMP_PREFIX_NONE/ - don't include ASCII dump - respect 80-columns limit Signed-off-by: Denis Cheng <crquan@gmail.com> Cc: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
2007-10-22[SG] Update drivers to use sg helpersJens Axboe1-6/+6
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
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