From 9736f4ad7c6dd79eea36c7fb537a27bbd802582a Mon Sep 17 00:00:00 2001 From: Ilias Tsitsimpis Date: Thu, 23 Apr 2015 21:30:06 +0300 Subject: [PATCH] target/loop: Enable VARLEN CDB support Field shost->max_cmd_len is used to inform Linux / the SCSI midlayer of the maximum CDB size an LLD is capable of handling. Set this field to SCSI_MAX_VARLEN_CDB_SIZE for target, to enable support for variable-sized CDBs (0x7E). Also remove the definition of TL_SCSI_MAX_CMD_LEN since it is now redundant. Signed-off-by: Ilias Tsitsimpis Signed-off-by: Vangelis Koukis Reviewed-by: Andy Grover Signed-off-by: Nicholas Bellinger --- drivers/target/loopback/tcm_loop.c | 2 +- drivers/target/loopback/tcm_loop.h | 5 ----- 2 files changed, 1 insertion(+), 6 deletions(-) diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c index 51f0c89..b863ce89 100644 --- a/drivers/target/loopback/tcm_loop.c +++ b/drivers/target/loopback/tcm_loop.c @@ -409,7 +409,7 @@ static int tcm_loop_driver_probe(struct device *dev) sh->max_id = 2; sh->max_lun = 0; sh->max_channel = 0; - sh->max_cmd_len = TL_SCSI_MAX_CMD_LEN; + sh->max_cmd_len = SCSI_MAX_VARLEN_CDB_SIZE; host_prot = SHOST_DIF_TYPE1_PROTECTION | SHOST_DIF_TYPE2_PROTECTION | SHOST_DIF_TYPE3_PROTECTION | SHOST_DIX_TYPE1_PROTECTION | diff --git a/drivers/target/loopback/tcm_loop.h b/drivers/target/loopback/tcm_loop.h index 1e72ff7..433e595 100644 --- a/drivers/target/loopback/tcm_loop.h +++ b/drivers/target/loopback/tcm_loop.h @@ -2,11 +2,6 @@ #define TL_WWN_ADDR_LEN 256 #define TL_TPGS_PER_HBA 32 -/* - * Used in tcm_loop_driver_probe() for struct Scsi_Host->max_cmd_len - */ -#define TL_SCSI_MAX_CMD_LEN 32 - struct tcm_loop_cmd { /* State of Linux/SCSI CDB+Data descriptor */ u32 sc_cmd_state; -- 2.7.4