From: Bart Van Assche Date: Fri, 9 Aug 2019 03:01:48 +0000 (-0700) Subject: scsi: qla2xxx: Fix qla24xx_process_bidir_cmd() X-Git-Tag: v5.4-rc1~89^2~161 X-Git-Url: https://asedeno.scripts.mit.edu/gitweb/?a=commitdiff_plain;h=c29282c65d1cf54daeea63be46243d7f69d72f4d;p=linux.git scsi: qla2xxx: Fix qla24xx_process_bidir_cmd() Set the r??_data_len variables before using these instead of after. This patch fixes the following Coverity complaint: const: At condition req_data_len != rsp_data_len, the value of req_data_len must be equal to 0. const: At condition req_data_len != rsp_data_len, the value of rsp_data_len must be equal to 0. dead_error_condition: The condition req_data_len != rsp_data_len cannot be true. Cc: Himanshu Madhani Fixes: a9b6f722f62d ("[SCSI] qla2xxx: Implementation of bidirectional.") # v3.7. Signed-off-by: Bart Van Assche Tested-by: Himanshu Madhani Reviewed-by: Himanshu Madhani Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/qla2xxx/qla_bsg.c b/drivers/scsi/qla2xxx/qla_bsg.c index 11e420f8c493..240b07b0098a 100644 --- a/drivers/scsi/qla2xxx/qla_bsg.c +++ b/drivers/scsi/qla2xxx/qla_bsg.c @@ -1782,8 +1782,8 @@ qla24xx_process_bidir_cmd(struct bsg_job *bsg_job) uint16_t nextlid = 0; uint32_t tot_dsds; srb_t *sp = NULL; - uint32_t req_data_len = 0; - uint32_t rsp_data_len = 0; + uint32_t req_data_len; + uint32_t rsp_data_len; /* Check the type of the adapter */ if (!IS_BIDI_CAPABLE(ha)) { @@ -1888,6 +1888,9 @@ qla24xx_process_bidir_cmd(struct bsg_job *bsg_job) goto done_unmap_sg; } + req_data_len = bsg_job->request_payload.payload_len; + rsp_data_len = bsg_job->reply_payload.payload_len; + if (req_data_len != rsp_data_len) { rval = EXT_STATUS_BUSY; ql_log(ql_log_warn, vha, 0x70aa, @@ -1895,10 +1898,6 @@ qla24xx_process_bidir_cmd(struct bsg_job *bsg_job) goto done_unmap_sg; } - req_data_len = bsg_job->request_payload.payload_len; - rsp_data_len = bsg_job->reply_payload.payload_len; - - /* Alloc SRB structure */ sp = qla2x00_get_sp(vha, &(vha->bidir_fcport), GFP_KERNEL); if (!sp) {