[PATCH AUTOSEL 5.13 10/24] scsi: core: Avoid printing an error if target_alloc() returns -ENXIO
From: Sasha Levin
Date: Tue Aug 10 2021 - 10:15:41 EST
From: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
[ Upstream commit 70edd2e6f652f67d854981fd67f9ad0f1deaea92 ]
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@xxxxxxxxxxxx
Signed-off-by: Sreekanth Reddy <sreekanth.reddy@xxxxxxxxxxxx>
Signed-off-by: Martin K. Petersen <martin.petersen@xxxxxxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
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 12f54571b83e..f0367115632b 100644
--- a/drivers/scsi/scsi_scan.c
+++ b/drivers/scsi/scsi_scan.c
@@ -471,7 +471,8 @@ 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);
--
2.30.2