diff options
| author | Stephen Kitt <steve@sk2.org> | 2018-03-09 23:32:11 +0100 |
|---|---|---|
| committer | Martin K. Petersen <martin.petersen@oracle.com> | 2018-03-13 03:37:20 +0100 |
| commit | 92eb506262a2a3da9aeaece7017e77490da907dd (patch) | |
| tree | 1896ed10ae1166a3a01fe52ead7fd5a21540b872 /drivers/scsi | |
| parent | scsi: jazz_esp, sun3x_esp: Pass struct device pointer in dma calls (diff) | |
| download | linux-92eb506262a2a3da9aeaece7017e77490da907dd.tar.xz linux-92eb506262a2a3da9aeaece7017e77490da907dd.zip | |
scsi: device_handler: remove VLAs
In preparation to enabling -Wvla, remove VLAs and replace them with
fixed-length arrays instead.
scsi_dh_{alua,emc,rdac} use variable-length array declarations to store
command blocks, with the appropriate size as determined by
COMMAND_SIZE. This patch replaces these with fixed-sized arrays using
MAX_COMMAND_SIZE, so that the array size can be determined at compile
time.
This was prompted by https://lkml.org/lkml/2018/3/7/621
Signed-off-by: Stephen Kitt <steve@sk2.org>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi')
| -rw-r--r-- | drivers/scsi/device_handler/scsi_dh_alua.c | 8 | ||||
| -rw-r--r-- | drivers/scsi/device_handler/scsi_dh_emc.c | 2 | ||||
| -rw-r--r-- | drivers/scsi/device_handler/scsi_dh_rdac.c | 2 |
3 files changed, 6 insertions, 6 deletions
diff --git a/drivers/scsi/device_handler/scsi_dh_alua.c b/drivers/scsi/device_handler/scsi_dh_alua.c index 022e421c2185..c3483d811824 100644 --- a/drivers/scsi/device_handler/scsi_dh_alua.c +++ b/drivers/scsi/device_handler/scsi_dh_alua.c @@ -138,12 +138,12 @@ static void release_port_group(struct kref *kref) static int submit_rtpg(struct scsi_device *sdev, unsigned char *buff, int bufflen, struct scsi_sense_hdr *sshdr, int flags) { - u8 cdb[COMMAND_SIZE(MAINTENANCE_IN)]; + u8 cdb[MAX_COMMAND_SIZE]; int req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | REQ_FAILFAST_DRIVER; /* Prepare the command. */ - memset(cdb, 0x0, COMMAND_SIZE(MAINTENANCE_IN)); + memset(cdb, 0x0, MAX_COMMAND_SIZE); cdb[0] = MAINTENANCE_IN; if (!(flags & ALUA_RTPG_EXT_HDR_UNSUPP)) cdb[1] = MI_REPORT_TARGET_PGS | MI_EXT_HDR_PARAM_FMT; @@ -166,7 +166,7 @@ static int submit_rtpg(struct scsi_device *sdev, unsigned char *buff, static int submit_stpg(struct scsi_device *sdev, int group_id, struct scsi_sense_hdr *sshdr) { - u8 cdb[COMMAND_SIZE(MAINTENANCE_OUT)]; + u8 cdb[MAX_COMMAND_SIZE]; unsigned char stpg_data[8]; int stpg_len = 8; int req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | @@ -178,7 +178,7 @@ static int submit_stpg(struct scsi_device *sdev, int group_id, put_unaligned_be16(group_id, &stpg_data[6]); /* Prepare the command. */ - memset(cdb, 0x0, COMMAND_SIZE(MAINTENANCE_OUT)); + memset(cdb, 0x0, MAX_COMMAND_SIZE); cdb[0] = MAINTENANCE_OUT; cdb[1] = MO_SET_TARGET_PGS; put_unaligned_be32(stpg_len, &cdb[6]); diff --git a/drivers/scsi/device_handler/scsi_dh_emc.c b/drivers/scsi/device_handler/scsi_dh_emc.c index 6a2792f3a37e..95c47909a58f 100644 --- a/drivers/scsi/device_handler/scsi_dh_emc.c +++ b/drivers/scsi/device_handler/scsi_dh_emc.c @@ -249,7 +249,7 @@ static int send_trespass_cmd(struct scsi_device *sdev, struct clariion_dh_data *csdev) { unsigned char *page22; - unsigned char cdb[COMMAND_SIZE(MODE_SELECT)]; + unsigned char cdb[MAX_COMMAND_SIZE]; int err, res = SCSI_DH_OK, len; struct scsi_sense_hdr sshdr; u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | diff --git a/drivers/scsi/device_handler/scsi_dh_rdac.c b/drivers/scsi/device_handler/scsi_dh_rdac.c index 7af31a1247ee..d27fabae8ddd 100644 --- a/drivers/scsi/device_handler/scsi_dh_rdac.c +++ b/drivers/scsi/device_handler/scsi_dh_rdac.c @@ -533,7 +533,7 @@ static void send_mode_select(struct work_struct *work) int err = SCSI_DH_OK, retry_cnt = RDAC_RETRY_COUNT; struct rdac_queue_data *tmp, *qdata; LIST_HEAD(list); - unsigned char cdb[COMMAND_SIZE(MODE_SELECT_10)]; + unsigned char cdb[MAX_COMMAND_SIZE]; struct scsi_sense_hdr sshdr; unsigned int data_size; u64 req_flags = REQ_FAILFAST_DEV | REQ_FAILFAST_TRANSPORT | |