[PATCH v1 3/5] scsi: qla2xxx: Introduce DEFINE_STORE_ATTRIBUTE for debugfs

From: Luo Jiaxing
Date: Thu Oct 22 2020 - 04:39:33 EST


Seq instroduce a new helper marco DEFINE_STORE_ATTRIBUTE for
Read-Write file, So we apply it at qla2xxx to reduce some duplicate code.

Signed-off-by: Luo Jiaxing <luojiaxing@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_dfs.c | 19 ++-----------------
1 file changed, 2 insertions(+), 17 deletions(-)

diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index f89ad32..d7796e3 100644
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -513,14 +513,6 @@ qla_dfs_naqp_show(struct seq_file *s, void *unused)
return 0;
}

-static int
-qla_dfs_naqp_open(struct inode *inode, struct file *file)
-{
- struct scsi_qla_host *vha = inode->i_private;
-
- return single_open(file, qla_dfs_naqp_show, vha);
-}
-
static ssize_t
qla_dfs_naqp_write(struct file *file, const char __user *buffer,
size_t count, loff_t *pos)
@@ -569,14 +561,7 @@ qla_dfs_naqp_write(struct file *file, const char __user *buffer,
return rc;
}

-static const struct file_operations dfs_naqp_ops = {
- .open = qla_dfs_naqp_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
- .write = qla_dfs_naqp_write,
-};
-
+DEFINE_STORE_ATTRIBUTE(qla_dfs_naqp);

int
qla2x00_dfs_setup(scsi_qla_host_t *vha)
@@ -622,7 +607,7 @@ qla2x00_dfs_setup(scsi_qla_host_t *vha)

if (IS_QLA27XX(ha) || IS_QLA83XX(ha) || IS_QLA28XX(ha)) {
ha->tgt.dfs_naqp = debugfs_create_file("naqp",
- 0400, ha->dfs_dir, vha, &dfs_naqp_ops);
+ 0400, ha->dfs_dir, vha, &qla_dfs_naqp_ops);
if (!ha->tgt.dfs_naqp) {
ql_log(ql_log_warn, vha, 0xd011,
"Unable to create debugFS naqp node.\n");
--
2.7.4