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From: Dan Carpenter <dan.carpenter@oracle.com>
To: "Martin K. Petersen" <martin.petersen@oracle.com>
Cc: linux-scsi@vger.kernel.org, target-devel@vger.kernel.org,
	kernel-janitors@vger.kernel.org
Subject: [PATCH] target/configfs: delete unnecessary checks for NULL
Date: Thu, 18 Nov 2021 11:49:00 +0300	[thread overview]
Message-ID: <20211118084900.GA24550@kili> (raw)

The "item" pointer is always going to be valid pointer and does not
need to be checked.

But if "item" were NULL then item_to_lun() would not return a NULL, but
instead, the container_of() pointer math would return a value in the
error pointer range.  This confuses static checkers since it looks like
a NULL vs IS_ERR() bug.

Delete the bogus checks.

Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
---
 drivers/target/target_core_fabric_configfs.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/target/target_core_fabric_configfs.c b/drivers/target/target_core_fabric_configfs.c
index 0b65de9f2df1..95a88f6224cd 100644
--- a/drivers/target/target_core_fabric_configfs.c
+++ b/drivers/target/target_core_fabric_configfs.c
@@ -520,7 +520,7 @@ static ssize_t target_fabric_port_alua_tg_pt_gp_show(struct config_item *item,
 {
 	struct se_lun *lun = item_to_lun(item);
 
-	if (!lun || !lun->lun_se_dev)
+	if (!lun->lun_se_dev)
 		return -ENODEV;
 
 	return core_alua_show_tg_pt_gp_info(lun, page);
@@ -531,7 +531,7 @@ static ssize_t target_fabric_port_alua_tg_pt_gp_store(struct config_item *item,
 {
 	struct se_lun *lun = item_to_lun(item);
 
-	if (!lun || !lun->lun_se_dev)
+	if (!lun->lun_se_dev)
 		return -ENODEV;
 
 	return core_alua_store_tg_pt_gp_info(lun, page, count);
@@ -542,7 +542,7 @@ static ssize_t target_fabric_port_alua_tg_pt_offline_show(
 {
 	struct se_lun *lun = item_to_lun(item);
 
-	if (!lun || !lun->lun_se_dev)
+	if (!lun->lun_se_dev)
 		return -ENODEV;
 
 	return core_alua_show_offline_bit(lun, page);
@@ -553,7 +553,7 @@ static ssize_t target_fabric_port_alua_tg_pt_offline_store(
 {
 	struct se_lun *lun = item_to_lun(item);
 
-	if (!lun || !lun->lun_se_dev)
+	if (!lun->lun_se_dev)
 		return -ENODEV;
 
 	return core_alua_store_offline_bit(lun, page, count);
@@ -564,7 +564,7 @@ static ssize_t target_fabric_port_alua_tg_pt_status_show(
 {
 	struct se_lun *lun = item_to_lun(item);
 
-	if (!lun || !lun->lun_se_dev)
+	if (!lun->lun_se_dev)
 		return -ENODEV;
 
 	return core_alua_show_secondary_status(lun, page);
@@ -575,7 +575,7 @@ static ssize_t target_fabric_port_alua_tg_pt_status_store(
 {
 	struct se_lun *lun = item_to_lun(item);
 
-	if (!lun || !lun->lun_se_dev)
+	if (!lun->lun_se_dev)
 		return -ENODEV;
 
 	return core_alua_store_secondary_status(lun, page, count);
@@ -586,7 +586,7 @@ static ssize_t target_fabric_port_alua_tg_pt_write_md_show(
 {
 	struct se_lun *lun = item_to_lun(item);
 
-	if (!lun || !lun->lun_se_dev)
+	if (!lun->lun_se_dev)
 		return -ENODEV;
 
 	return core_alua_show_secondary_write_metadata(lun, page);
@@ -597,7 +597,7 @@ static ssize_t target_fabric_port_alua_tg_pt_write_md_store(
 {
 	struct se_lun *lun = item_to_lun(item);
 
-	if (!lun || !lun->lun_se_dev)
+	if (!lun->lun_se_dev)
 		return -ENODEV;
 
 	return core_alua_store_secondary_write_metadata(lun, page, count);
-- 
2.20.1


             reply	other threads:[~2021-11-18  8:49 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-18  8:49 Dan Carpenter [this message]
2021-11-19  4:16 ` [PATCH] target/configfs: delete unnecessary checks for NULL Martin K. Petersen

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