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authorChristoph Hellwig <hch@infradead.org>2012-05-20 11:59:11 -0400
committerNicholas Bellinger <nab@linux-iscsi.org>2012-07-16 17:25:55 -0700
commit64f1db38c65fa634f4aa21e0f70480a6b8b4d47c (patch)
treede8a6b08d9230ba7cb69a3c78174b351123747df /drivers/target/loopback
parentcb4f4d3c7398a709b48d397e0520ee2509a953a4 (diff)
downloadlinux-64f1db38c65fa634f4aa21e0f70480a6b8b4d47c.tar.gz
target: remove control CDB flags
We don't need three flags to classifiy the CDB as we can check for a NULL S/G list for a dataless command, and can infer from the absence of the data flag that we deal with a control CDB. Also remove the _SG_IO from the data CDB flag as all I/O is dont on S/G lists now. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>
Diffstat (limited to 'drivers/target/loopback')
-rw-r--r--drivers/target/loopback/tcm_loop.c9
1 files changed, 4 insertions, 5 deletions
diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c
index 38dfac2b0a1..f65dc9db859 100644
--- a/drivers/target/loopback/tcm_loop.c
+++ b/drivers/target/loopback/tcm_loop.c
@@ -211,12 +211,11 @@ static void tcm_loop_submission_work(struct work_struct *work)
/*
* Because some userspace code via scsi-generic do not memset their
* associated read buffers, go ahead and do that here for type
- * SCF_SCSI_CONTROL_SG_IO_CDB. Also note that this is currently
- * guaranteed to be a single SGL for SCF_SCSI_CONTROL_SG_IO_CDB
- * by target core in target_setup_cmd_from_cdb() ->
- * transport_generic_cmd_sequencer().
+ * non-data CDBs. Also note that this is currently guaranteed to be a
+ * single SGL for this case by target core in
+ * target_setup_cmd_from_cdb() -> transport_generic_cmd_sequencer().
*/
- if (se_cmd->se_cmd_flags & SCF_SCSI_CONTROL_SG_IO_CDB &&
+ if (!(se_cmd->se_cmd_flags & SCF_SCSI_DATA_CDB) &&
se_cmd->data_direction == DMA_FROM_DEVICE) {
struct scatterlist *sg = scsi_sglist(sc);
unsigned char *buf = kmap(sg_page(sg)) + sg->offset;