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target: Fix WRITE_SAME usage with transport_get_size 

For all flavours of WRITE_SAME, we only expect to handle a single block
of data-out buffer payload, regardless of the number of logical blocks
presented in the CDB.  This patch changes all flavours of WRITE_SAME in
transport_generic_cmd_sequencer() to pass '1' into transport_get_size()
instead of the extracted 'sectors' to properly handle the default usage
of sg_write_same without the --xferlen parameter.

Reported-by: Eric Seppanen <eric@purestorage.com>
Signed-off-by: Nicholas Bellinger <nab@risingtidesystems.com>
This commit is contained in:
Nicholas Bellinger 2011-08-08 19:08:23 -07:00
parent 706d586096
commit 12850626e2
1 changed files with 3 additions and 3 deletions
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6
drivers/target/target_core_transport.c
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@ -3103,7 +3103,7 @@ static int transport_generic_cmd_sequencer(
goto out_unsupported_cdb;
if (sectors)
size = transport_get_size(sectors, cdb, cmd);
size = transport_get_size(1, cdb, cmd);
else {
pr_err("WSNZ=1, WRITE_SAME w/sectors=0 not"
" supported\n");
@ -3365,7 +3365,7 @@ static int transport_generic_cmd_sequencer(
goto out_unsupported_cdb;
if (sectors)
size = transport_get_size(sectors, cdb, cmd);
size = transport_get_size(1, cdb, cmd);
else {
pr_err("WSNZ=1, WRITE_SAME w/sectors=0 not supported\n");
goto out_invalid_cdb_field;
@ -3383,7 +3383,7 @@ static int transport_generic_cmd_sequencer(
goto out_unsupported_cdb;
if (sectors)
size = transport_get_size(sectors, cdb, cmd);
size = transport_get_size(1, cdb, cmd);
else {
pr_err("WSNZ=1, WRITE_SAME w/sectors=0 not supported\n");
goto out_invalid_cdb_field;