From 3949e2f04262495f6c8795b148aa26dffccba646 Mon Sep 17 00:00:00 2001 From: Christoph Hellwig Date: Tue, 14 Feb 2017 20:15:58 +0100 Subject: [PATCH] scsi: simplify scsi_execute_req_flags Add a sshdr argument to __scsi_execute so that we can decode the sense data directly into the sense header instead of needing a copy of it. Signed-off-by: Christoph Hellwig Signed-off-by: Martin K. Petersen --- drivers/scsi/scsi_lib.c | 27 +++++++++------------------ 1 file changed, 9 insertions(+), 18 deletions(-) diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c index a3c7ec1..5f66148 100644 --- a/drivers/scsi/scsi_lib.c +++ b/drivers/scsi/scsi_lib.c @@ -215,8 +215,9 @@ void scsi_queue_insert(struct scsi_cmnd *cmd, int reason) static int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, int data_direction, void *buffer, unsigned bufflen, - unsigned char *sense, int timeout, int retries, u64 flags, - req_flags_t rq_flags, int *resid) + unsigned char *sense, struct scsi_sense_hdr *sshdr, + int timeout, int retries, u64 flags, req_flags_t rq_flags, + int *resid) { struct request *req; struct scsi_request *rq; @@ -259,6 +260,8 @@ static int __scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, *resid = rq->resid_len; if (sense && rq->sense_len) memcpy(sense, rq->sense, SCSI_SENSE_BUFFERSIZE); + if (sshdr) + scsi_normalize_sense(rq->sense, rq->sense_len, sshdr); ret = req->errors; out: blk_put_request(req); @@ -288,7 +291,7 @@ int scsi_execute(struct scsi_device *sdev, const unsigned char *cmd, int *resid) { return __scsi_execute(sdev, cmd, data_direction, buffer, bufflen, sense, - timeout, retries, flags, 0, resid); + NULL, timeout, retries, flags, 0, resid); } EXPORT_SYMBOL(scsi_execute); @@ -297,21 +300,9 @@ int scsi_execute_req_flags(struct scsi_device *sdev, const unsigned char *cmd, struct scsi_sense_hdr *sshdr, int timeout, int retries, int *resid, u64 flags, req_flags_t rq_flags) { - char *sense = NULL; - int result; - - if (sshdr) { - sense = kzalloc(SCSI_SENSE_BUFFERSIZE, GFP_NOIO); - if (!sense) - return DRIVER_ERROR << 24; - } - result = __scsi_execute(sdev, cmd, data_direction, buffer, bufflen, - sense, timeout, retries, flags, rq_flags, resid); - if (sshdr) - scsi_normalize_sense(sense, SCSI_SENSE_BUFFERSIZE, sshdr); - - kfree(sense); - return result; + return __scsi_execute(sdev, cmd, data_direction, buffer, bufflen, + NULL, sshdr, timeout, retries, flags, rq_flags, + resid); } EXPORT_SYMBOL(scsi_execute_req_flags); -- 2.7.4