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scsi: remove abuses of scsi_populate_tag

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Unless we want to build a SPI tag message we should just check SCMD_TAGGED
instead of reverse engineering a tag type through the use of
scsi_populate_tag_msg.

Also rename the function to spi_populate_tag_msg, make it behave like the
other spi message helpers, and move it to the spi transport class.

Signed-off-by: Christoph Hellwig <[email protected]>
Reviewed-by: Mike Christie <[email protected]>
Reviewed-by: Hannes Reinecke <[email protected]>
This commit is contained in:
Christoph Hellwig 2014-10-30 14:30:06 +01:00
commit 5066863337
19 changed files with 56 additions and 311 deletions
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21
include/scsi/scsi_tcq.h
View file

@ -80,27 +80,6 @@ static inline void scsi_deactivate_tcq(struct scsi_device *sdev, int depth)
scsi_adjust_queue_depth(sdev, 0, depth);
}
/**
* scsi_populate_tag_msg - place a tag message in a buffer
* @SCpnt: pointer to the Scsi_Cmnd for the tag
* @msg: pointer to the area to place 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.
**/
static inline int scsi_populate_tag_msg(struct scsi_cmnd *cmd, char *msg)
{
if (cmd->flags & SCMD_TAGGED) {
*msg++ = MSG_SIMPLE_TAG;
*msg++ = cmd->request->tag;
return 2;
}
return 0;
}
static inline struct scsi_cmnd *scsi_mq_find_tag(struct Scsi_Host *shost,
int unique_tag)
{

1
include/scsi/scsi_transport_spi.h
View file

@ -157,5 +157,6 @@ int spi_populate_width_msg(unsigned char *msg, int width);
int spi_populate_sync_msg(unsigned char *msg, int period, int offset);
int spi_populate_ppr_msg(unsigned char *msg, int period, int offset, int width,
int options);
int spi_populate_tag_msg(unsigned char *msg, struct scsi_cmnd *cmd);
#endif /* SCSI_TRANSPORT_SPI_H */