From: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Date: Mon, 26 Jul 2021 17:24:02 +0530
Subject: scsi: core: Avoid printing an error if target_alloc() returns -ENXIO
Git-commit: 70edd2e6f652f67d854981fd67f9ad0f1deaea92
Patch-mainline: v5.14-rc5
References: git-fixes
Avoid printing a 'target allocation failed' error if the driver
target_alloc() callback function returns -ENXIO. This return value
indicates that the corresponding H:C:T:L entry is empty.
Removing this error reduces the scan time if the user issues SCAN_WILD_CARD
scan operation through sysfs parameter on a host with a lot of empty
H:C:T:L entries.
Avoiding the printk on -ENXIO matches the behavior of the other callback
functions during scanning.
Link: https://lore.kernel.org/r/20210726115402.1936-1-sreekanth.reddy@broadcom.com
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Lee Duncan <lduncan@suse.com>
---
drivers/scsi/scsi_scan.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/scsi/scsi_scan.c b/drivers/scsi/scsi_scan.c
index b059bf2b61d4..5b6996a2401b 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -475,7 +475,8 @@ static struct scsi_target *scsi_alloc_target(struct device *parent,
error = shost->hostt->target_alloc(starget);
if(error) {
- dev_printk(KERN_ERR, dev, "target allocation failed, error %d\n", error);
+ if (error != -ENXIO)
+ dev_err(dev, "target allocation failed, error %d\n", error);
/* don't want scsi_target_reap to do the final
* put because it will be under the host lock */
scsi_target_destroy(starget);