spi_populate_tag_msg
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## Name

spi_populate_tag_msg — place a tag message in a buffer

## Synopsis

`int spi_populate_tag_msg (` | unsigned char * msg,
| struct scsi_cmnd * cmd`)`;

## Arguments

`msg`

  pointer to the area to place the tag

`cmd`

  pointer to the scsi command for the tag

## Notes

designed to create the correct type of tag message for the particular request. Returns the size of the tag message. May return 0 if TCQ is disabled for this device.

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