[PATCH 2/3] iscsi-target: Delete error messages for failed memory allocations

SF Markus Elfring
2017-04-09T14:26:59Z

Date: Sun, 9 Apr 2017 15:34:50 +0200

The script "checkpatch.pl" pointed information out like the following.

WARNING: Possible unnecessary 'out of memory' message

Thus remove such statements here.

Link: http://events.linuxfoundation.org/sites/events/files/slides/LCJ16-Refactor_Strings-WSang_0.pdf
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
drivers/target/iscsi/iscsi_target.c | 37 ++++++++++---------------------------
1 file changed, 10 insertions(+), 27 deletions(-)

diff --git a/drivers/target/iscsi/iscsi_target.c b/drivers/target/iscsi/iscsi_target.c
index 536b939afe9d..196e9dd138ca 100644
--- a/drivers/target/iscsi/iscsi_target.c
+++ b/drivers/target/iscsi/iscsi_target.c
@@ -129,10 +129,8 @@ struct iscsi_tiqn *iscsit_add_tiqn(unsigned char *buf)
}

tiqn = kzalloc(sizeof(struct iscsi_tiqn), GFP_KERNEL);
- if (!tiqn) {
- pr_err("Unable to allocate struct iscsi_tiqn\n");
+ if (!tiqn)
return ERR_PTR(-ENOMEM);
- }

sprintf(tiqn->tiqn, "%s", buf);
INIT_LIST_HEAD(&tiqn->tiqn_list);
@@ -364,7 +362,6 @@ struct iscsi_np *iscsit_add_np(

np = kzalloc(sizeof(struct iscsi_np), GFP_KERNEL);
if (!np) {
- pr_err("Unable to allocate memory for struct iscsi_np\n");
mutex_unlock(&np_lock);
return ERR_PTR(-ENOMEM);
}
@@ -699,10 +696,9 @@ static int __init iscsi_target_init_module(void)
pr_debug("iSCSI-Target "ISCSIT_VERSION"\n");

iscsit_global = kzalloc(sizeof(struct iscsit_global), GFP_KERNEL);
- if (!iscsit_global) {
- pr_err("Unable to allocate memory for iscsit_global\n");
+ if (!iscsit_global)
return -1;
- }
+
spin_lock_init(&iscsit_global->ts_bitmap_lock);
mutex_init(&auth_id_lock);
spin_lock_init(&sess_idr_lock);
@@ -715,10 +711,8 @@ static int __init iscsi_target_init_module(void)

size = BITS_TO_LONGS(ISCSIT_BITMAP_BITS) * sizeof(long);
iscsit_global->ts_bitmap = vzalloc(size);
- if (!iscsit_global->ts_bitmap) {
- pr_err("Unable to allocate iscsit_global->ts_bitmap\n");
+ if (!iscsit_global->ts_bitmap)
goto configfs_out;
- }

lio_qr_cache = kmem_cache_create("lio_qr_cache",
sizeof(struct iscsi_queue_req),
@@ -986,10 +980,8 @@ static int iscsit_allocate_iovecs(struct iscsi_cmd *cmd)

iov_count += ISCSI_IOV_DATA_BUFFER;
cmd->iov_data = kcalloc(iov_count, sizeof(*cmd->iov_data), GFP_KERNEL);
- if (!cmd->iov_data) {
- pr_err("Unable to allocate cmd->iov_data\n");
+ if (!cmd->iov_data)
return -ENOMEM;
- }

cmd->orig_iov_data_count = iov_count;
return 0;
@@ -1850,8 +1842,6 @@ static int iscsit_handle_nop_out(struct iscsi_conn *conn, struct iscsi_cmd *cmd,

ping_data = kzalloc(payload_length + 1, GFP_KERNEL);
if (!ping_data) {
- pr_err("Unable to allocate memory for"
- " NOPOUT ping data.\n");
ret = -1;
goto out;
}
@@ -1999,13 +1989,10 @@ iscsit_handle_task_mgt_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
cmd->data_direction = DMA_NONE;

cmd->tmr_req = kzalloc(sizeof(struct iscsi_tmr_req), GFP_KERNEL);
- if (!cmd->tmr_req) {
- pr_err("Unable to allocate memory for"
- " Task Management command!\n");
+ if (!cmd->tmr_req)
return iscsit_add_reject_cmd(cmd,
ISCSI_REASON_BOOKMARK_NO_RESOURCES,
buf);
- }

/*
* TASK_REASSIGN for ERL=2 / connection stays inside of
@@ -2265,11 +2252,9 @@ iscsit_handle_text_cmd(struct iscsi_conn *conn, struct iscsi_cmd *cmd,
struct kvec iov[3];

text_in = kzalloc(payload_length, GFP_KERNEL);
- if (!text_in) {
- pr_err("Unable to allocate memory for"
- " incoming text parameters\n");
+ if (!text_in)
goto reject;
- }
+
cmd->text_in_ptr = text_in;

memset(iov, 0, 3 * sizeof(struct kvec));
@@ -3353,11 +3338,9 @@ iscsit_build_sendtargets_response(struct iscsi_cmd *cmd,
SENDTARGETS_BUF_LIMIT);

payload = kzalloc(buffer_len, GFP_KERNEL);
- if (!payload) {
- pr_err("Unable to allocate memory for sendtargets"
- " response.\n");
+ if (!payload)
return -ENOMEM;
- }
+
/*
* Locate pointer to iqn./eui. string for ICF_SENDTARGETS_SINGLE
* explicit case..
--
2.12.2