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  1. 02 May, 2008 3 commits
    • Boaz Harrosh's avatar
      [SCSI] Let scsi_cmnd->cmnd use request->cmd buffer · 64a87b24
      Boaz Harrosh authored 
       - struct scsi_cmnd had a 16 bytes command buffer of its own.
   This is an unnecessary duplication and copy of request's
   cmd. It is probably left overs from the time that scsi_cmnd
   could function without a request attached. So clean that up.

 - Once above is done, few places, apart from scsi-ml, needed
   adjustments due to changing the data type of scsi_cmnd->cmnd.

 - Lots of drivers still use MAX_COMMAND_SIZE. So I have left
   that #define but equate it to BLK_MAX_CDB. The way I see it
   and is reflected in the patch below is.
   MAX_COMMAND_SIZE - means: The longest fixed-length (*) SCSI CDB
                      as per the SCSI standard and is not related
                      to the implementation.
   BLK_MAX_CDB.     - The allocated space at the request level

 - I have audit all ISA drivers and made sure none use ->cmnd in a DMA
   Operation. Same audit was done by Andi Kleen.

(*)fixed-length here means commands that their size can be determined
   by their opcode and the CDB does not carry a length specifier, (unlike
   the VARIABLE_LENGTH_CMD(0x7f) command). This is actually not exactly
   true and the SCSI standard also defines extended commands and
   vendor specific commands that can be bigger than 16 bytes. The kernel
   will support these using the same infrastructure used for VARLEN CDB's.
   So in effect MAX_COMMAND_SIZE means the maximum size command
   scsi-ml supports without specifying a cmd_len by ULD's
Signed-off-by: default avatarBoaz Harrosh <bharrosh@panasas.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
      64a87b24
    • FUJITA Tomonori's avatar
      [SCSI] bsg: add large command support · 9f5de6b1
      FUJITA Tomonori authored 
      This enables bsg to handle the request length larger than BLK_MAX_CDB
(mainly for the variable length CDB format).
Signed-off-by: default avatarFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: default avatarJens Axboe <jens.axboe@oracle.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
      9f5de6b1
    • Mark Salyzyn's avatar
      [SCSI] aacraid: Fix down_interruptible() to check the return value correctly · 0462590e
      Mark Salyzyn authored 
      On Apr 21, 2008, at 8:42 PM, Yinghai Lu wrote:
> bisected to:
>
> commit e6990c64
> Author: Mark Salyzyn <Mark_Salyzyn@adaptec.com>
> Date:   Mon Apr 14 14:20:16 2008 -0400
>
>    [SCSI] aacraid: Fix down_interruptible() to check the return value

The return value for down_interruptible was incorrectly checked!
updated patch enclosed.
Signed-off-by: default avatarMark Salyzyn <aacraid@adaptec.com>
Signed-off-by: default avatarJames Bottomley <James.Bottomley@HansenPartnership.com>
      0462590e
  3. 30 Apr, 2008 5 commits
  5. 27 Apr, 2008 32 commits