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| author | Dan Carpenter <dan.carpenter@oracle.com> | 2011-09-26 09:23:37 +0300 |
|---|---|---|
| committer | James Bottomley <JBottomley@Parallels.com> | 2011-12-15 10:57:31 +0400 |
| commit | 4053a4be525d3441cad6cd1ae207177f03eb9ce7 (patch) | |
| tree | 081b70eb50643040b85104aa652533ad07fa5379 | |
| parent | 7af0abbc2ffcae601ea14e39048901833528f104 (diff) | |
| download | op-kernel-dev-4053a4be525d3441cad6cd1ae207177f03eb9ce7.zip op-kernel-dev-4053a4be525d3441cad6cd1ae207177f03eb9ce7.tar.gz | |
[SCSI] be2iscsi: cleanup a min_t() call
"sense_len" was declared as int type but actually it only stores a
u16 value that comes from hardware. The cast to u16 in min_t()
confuses static analysis because it truncates the int to u16 so I've
fixed the declaration to reflect that "sense_len" is just a u16.
Also there was a call to cpu_to_be16() which I've changed to
be16_to_cpu(). The functions are equivalent, but obviously the
hardware is big endian and we're doing the min_t() comparison on CPU
endian values.
This whole patch is just a cleanup and doesn't affect how the code
works.
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Reviewed-by: Mike Christie <michaelc@cs.wisc.edu>
Acked-by: Jayamohan Kallickal <Jayamohan.kallickal@emulex.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
| -rw-r--r-- | drivers/scsi/be2iscsi/be_main.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/scsi/be2iscsi/be_main.c b/drivers/scsi/be2iscsi/be_main.c index 379c696..fc7c97d 100644 --- a/drivers/scsi/be2iscsi/be_main.c +++ b/drivers/scsi/be2iscsi/be_main.c @@ -1105,7 +1105,6 @@ be_complete_io(struct beiscsi_conn *beiscsi_conn, struct be_status_bhs *sts_bhs = (struct be_status_bhs *)io_task->cmd_bhs; struct iscsi_conn *conn = beiscsi_conn->conn; - unsigned int sense_len; unsigned char *sense; u32 resid = 0, exp_cmdsn, max_cmdsn; u8 rsp, status, flags; @@ -1153,9 +1152,11 @@ be_complete_io(struct beiscsi_conn *beiscsi_conn, } if (status == SAM_STAT_CHECK_CONDITION) { + u16 sense_len; unsigned short *slen = (unsigned short *)sts_bhs->sense_info; + sense = sts_bhs->sense_info + sizeof(unsigned short); - sense_len = cpu_to_be16(*slen); + sense_len = be16_to_cpu(*slen); memcpy(task->sc->sense_buffer, sense, min_t(u16, sense_len, SCSI_SENSE_BUFFERSIZE)); } |
