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authorChristoph Hellwig <hch@infradead.org>2014-02-20 14:20:59 -0800
committerJames Bottomley <JBottomley@Parallels.com>2014-03-27 08:26:31 -0700
commit0f2bb84d2a68448c29d46f9f77a78bb4ed0218db (patch)
tree567416ea674f58eb93e0dc2195cdf6b2483c2ac7 /drivers/scsi/scsi.c
parentc38c007af04b928b5285da8cc44fbe2f4810e24e (diff)
downloadlinux-0f2bb84d2a68448c29d46f9f77a78bb4ed0218db.tar.bz2
[SCSI] megaraid: simplify internal command handling
We don't use the passed in scsi command for anything, so just add a adapter- wide internal status to go along with the internal scb that is used unter int_mtx to pass back the return value and get rid of all the complexities and abuse of the scsi_cmnd structure. This gets rid of the only user of scsi_allocate_command/scsi_free_command, which can now be removed. [jejb: checkpatch fixes] Signed-off-by: Christoph Hellwig <hch@lst.de> Acked-by: Adam Radford <aradford@gmail.com> Signed-off-by: James Bottomley <JBottomley@Parallels.com>
Diffstat (limited to 'drivers/scsi/scsi.c')
-rw-r--r--drivers/scsi/scsi.c56
1 files changed, 0 insertions, 56 deletions
diff --git a/drivers/scsi/scsi.c b/drivers/scsi/scsi.c
index 1d98ac960887..c4dd0bfc663a 100644
--- a/drivers/scsi/scsi.c
+++ b/drivers/scsi/scsi.c
@@ -403,62 +403,6 @@ static void scsi_put_host_cmd_pool(gfp_t gfp_mask)
}
/**
- * scsi_allocate_command - get a fully allocated SCSI command
- * @gfp_mask: allocation mask
- *
- * This function is for use outside of the normal host based pools.
- * It allocates the relevant command and takes an additional reference
- * on the pool it used. This function *must* be paired with
- * scsi_free_command which also has the identical mask, otherwise the
- * free pool counts will eventually go wrong and you'll trigger a bug.
- *
- * This function should *only* be used by drivers that need a static
- * command allocation at start of day for internal functions.
- */
-struct scsi_cmnd *scsi_allocate_command(gfp_t gfp_mask)
-{
- struct scsi_host_cmd_pool *pool = scsi_get_host_cmd_pool(gfp_mask);
-
- if (!pool)
- return NULL;
-
- return scsi_pool_alloc_command(pool, gfp_mask);
-}
-EXPORT_SYMBOL(scsi_allocate_command);
-
-/**
- * scsi_free_command - free a command allocated by scsi_allocate_command
- * @gfp_mask: mask used in the original allocation
- * @cmd: command to free
- *
- * Note: using the original allocation mask is vital because that's
- * what determines which command pool we use to free the command. Any
- * mismatch will cause the system to BUG eventually.
- */
-void scsi_free_command(gfp_t gfp_mask, struct scsi_cmnd *cmd)
-{
- struct scsi_host_cmd_pool *pool = scsi_get_host_cmd_pool(gfp_mask);
-
- /*
- * this could trigger if the mask to scsi_allocate_command
- * doesn't match this mask. Otherwise we're guaranteed that this
- * succeeds because scsi_allocate_command must have taken a reference
- * on the pool
- */
- BUG_ON(!pool);
-
- scsi_pool_free_command(pool, cmd);
- /*
- * scsi_put_host_cmd_pool is called twice; once to release the
- * reference we took above, and once to release the reference
- * originally taken by scsi_allocate_command
- */
- scsi_put_host_cmd_pool(gfp_mask);
- scsi_put_host_cmd_pool(gfp_mask);
-}
-EXPORT_SYMBOL(scsi_free_command);
-
-/**
* scsi_setup_command_freelist - Setup the command freelist for a scsi host.
* @shost: host to allocate the freelist for.
*