diff options
| author | Hannes Reinecke <hare@suse.de> | 2015-12-01 10:16:52 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2015-12-02 16:37:14 -0500 |
| commit | a7089770b95902854f48b3bc7bec026dc8403286 (patch) | |
| tree | f71435add33ecd86a366a316a4ccde95e27df0a6 /drivers/scsi/device_handler | |
| parent | 6c4fc04491754834d5b5be189ee8f49a1d92b433 (diff) | |
scsi_dh_alua: use unaligned access macros
Use 'get_unaligned_XX' and 'put_unaligned_XX' instead of
open-coding it.
Signed-off-by: Hannes Reinecke <hare@suse.de>
Reviewed-by: Martin K. Petersen <martin.petersen@oracle.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Johannes Thumshirn <jthumshirn@suse.de>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/device_handler')
| -rw-r--r-- | drivers/scsi/device_handler/scsi_dh_alua.c | 23 |
1 files changed, 8 insertions, 15 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index d99fc14370cc..1c8e538d4a2e 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -22,6 +22,7 @@ #include <linux/slab.h> #include <linux/delay.h> #include <linux/module.h> +#include <asm/unaligned.h> #include <scsi/scsi.h> #include <scsi/scsi_dbg.h> #include <scsi/scsi_eh.h> @@ -152,10 +153,7 @@ static unsigned submit_rtpg(struct scsi_device *sdev, struct alua_dh_data *h) rq->cmd[1] = MI_REPORT_TARGET_PGS | MI_EXT_HDR_PARAM_FMT; else rq->cmd[1] = MI_REPORT_TARGET_PGS; - rq->cmd[6] = (h->bufflen >> 24) & 0xff; - rq->cmd[7] = (h->bufflen >> 16) & 0xff; - rq->cmd[8] = (h->bufflen >> 8) & 0xff; - rq->cmd[9] = h->bufflen & 0xff; + put_unaligned_be32(h->bufflen, &rq->cmd[6]); rq->cmd_len = COMMAND_SIZE(MAINTENANCE_IN); rq->sense = h->sense; @@ -236,8 +234,7 @@ static unsigned submit_stpg(struct alua_dh_data *h) /* Prepare the data buffer */ memset(h->buff, 0, stpg_len); h->buff[4] = TPGS_STATE_OPTIMIZED & 0x0f; - h->buff[6] = (h->group_id >> 8) & 0xff; - h->buff[7] = h->group_id & 0xff; + put_unaligned_be16(h->group_id, &h->buff[6]); rq = get_alua_req(sdev, h->buff, stpg_len, WRITE); if (!rq) @@ -246,10 +243,7 @@ static unsigned submit_stpg(struct alua_dh_data *h) /* Prepare the command. */ rq->cmd[0] = MAINTENANCE_OUT; rq->cmd[1] = MO_SET_TARGET_PGS; - rq->cmd[6] = (stpg_len >> 24) & 0xff; - rq->cmd[7] = (stpg_len >> 16) & 0xff; - rq->cmd[8] = (stpg_len >> 8) & 0xff; - rq->cmd[9] = stpg_len & 0xff; + put_unaligned_be32(stpg_len, &rq->cmd[6]); rq->cmd_len = COMMAND_SIZE(MAINTENANCE_OUT); rq->sense = h->sense; @@ -343,11 +337,11 @@ static int alua_check_vpd(struct scsi_device *sdev, struct alua_dh_data *h) switch (d[1] & 0xf) { case 0x4: /* Relative target port */ - h->rel_port = (d[6] << 8) + d[7]; + h->rel_port = get_unaligned_be16(&d[6]); break; case 0x5: /* Target port group */ - h->group_id = (d[6] << 8) + d[7]; + h->group_id = get_unaligned_be16(&d[6]); break; default: break; @@ -540,8 +534,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h, int wait_ return SCSI_DH_IO; } - len = (h->buff[0] << 24) + (h->buff[1] << 16) + - (h->buff[2] << 8) + h->buff[3] + 4; + len = get_unaligned_be32(&h->buff[0]) + 4; if (len > h->bufflen) { /* Resubmit with the correct length */ @@ -576,7 +569,7 @@ static int alua_rtpg(struct scsi_device *sdev, struct alua_dh_data *h, int wait_ k < len; k += off, ucp += off) { - if (h->group_id == (ucp[2] << 8) + ucp[3]) { + if (h->group_id == get_unaligned_be16(&ucp[2])) { h->state = ucp[0] & 0x0f; h->pref = ucp[0] >> 7; valid_states = ucp[1]; |