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scsi: cxlflash: Update cxlflash_afu_sync() to return errno

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The cxlflash_afu_sync() routine returns a negative one to indicate any kind
of failure. This makes it impossible to establish why the error occurred.

Update the return codes to clearly indicate the failure cause to the
caller.

Signed-off-by: Uma Krishnan <ukrishn@linux.vnet.ibm.com>
Acked-by: Matthew R. Ochs <mrochs@linux.vnet.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
This commit is contained in:
Uma Krishnan 2017-06-21 21:13:48 -05:00 committed by Martin K. Petersen
parent 66ea9bcc39
commit 539d890cec
1 changed files with 6 additions and 5 deletions
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11
drivers/scsi/cxlflash/main.c
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@ -2022,8 +2022,7 @@ static int init_afu(struct cxlflash_cfg *cfg)
* going away).
*
* Return:
* 0 on success
* -1 on failure
* 0 on success, -errno on failure
*/
int cxlflash_afu_sync(struct afu *afu, ctx_hndl_t ctx_hndl_u,
res_hndl_t res_hndl_u, u8 mode)
@ -2047,7 +2046,7 @@ int cxlflash_afu_sync(struct afu *afu, ctx_hndl_t ctx_hndl_u,
buf = kzalloc(sizeof(*cmd) + __alignof__(*cmd) - 1, GFP_KERNEL);
if (unlikely(!buf)) {
dev_err(dev, "%s: no memory for command\n", __func__);
rc = -1;
rc = -ENOMEM;
goto out;
}
@ -2071,12 +2070,14 @@ int cxlflash_afu_sync(struct afu *afu, ctx_hndl_t ctx_hndl_u,
*((__be32 *)&cmd->rcb.cdb[4]) = cpu_to_be32(res_hndl_u);
rc = afu->send_cmd(afu, cmd);
if (unlikely(rc))
if (unlikely(rc)) {
rc = -ENOBUFS;
goto out;
}
rc = wait_resp(afu, cmd);
if (unlikely(rc))
rc = -1;
rc = -EIO;
out:
atomic_dec(&afu->cmds_active);
mutex_unlock(&sync_active);