Use DEFINE_SHOW_STORE_ATTRIBUTE helper for read-write file to reduce some
duplicated code and delete unused macros.
Signed-off-by: Luo Jiaxing <luojiaxing@xxxxxxxxxx>
Signed-off-by: Xingui Yang <yangxingui@xxxxxxxxxx>
---
drivers/scsi/qla2xxx/qla_dfs.c | 113 +--------------------------------
1 file changed, 2 insertions(+), 111 deletions(-)
diff --git a/drivers/scsi/qla2xxx/qla_dfs.c b/drivers/scsi/qla2xxx/qla_dfs.c
index f060e593685d..fca01d551876 100644
--- a/drivers/scsi/qla2xxx/qla_dfs.c
+++ b/drivers/scsi/qla2xxx/qla_dfs.c
@@ -505,107 +505,6 @@ qla_dfs_naqp_show(struct seq_file *s, void *unused)
return 0;
}
-/*
- * Helper macros for setting up debugfs entries.
- * _name: The name of the debugfs entry
- * _ctx_struct: The context that was passed when creating the debugfs file
- *
- * QLA_DFS_SETUP_RD could be used when there is only a show function.
- * - show function take the name qla_dfs_<sysfs-name>_show
- *
- * QLA_DFS_SETUP_RW could be used when there are both show and write functions.
- * - show function take the name qla_dfs_<sysfs-name>_show
- * - write function take the name qla_dfs_<sysfs-name>_write
- *
- * To have a new debugfs entry, do:
- * 1. Create a "struct dentry *" in the appropriate structure in the format
- * dfs_<sysfs-name>
- * 2. Setup debugfs entries using QLA_DFS_SETUP_RD / QLA_DFS_SETUP_RW
- * 3. Create debugfs file in qla2x00_dfs_setup() using QLA_DFS_CREATE_FILE
- * or QLA_DFS_ROOT_CREATE_FILE
- * 4. Remove debugfs file in qla2x00_dfs_remove() using QLA_DFS_REMOVE_FILE
- * or QLA_DFS_ROOT_REMOVE_FILE
- *
- * Example for creating "TEST" sysfs file:
- * 1. struct qla_hw_data { ... struct dentry *dfs_TEST; }
- * 2. QLA_DFS_SETUP_RD(TEST, scsi_qla_host_t);
- * 3. In qla2x00_dfs_setup():
- * QLA_DFS_CREATE_FILE(ha, TEST, 0600, ha->dfs_dir, vha);
- * 4. In qla2x00_dfs_remove():
- * QLA_DFS_REMOVE_FILE(ha, TEST);
- */
-#define QLA_DFS_SETUP_RD(_name, _ctx_struct) \
-static int \
-qla_dfs_##_name##_open(struct inode *inode, struct file *file) \
-{ \
- _ctx_struct *__ctx = inode->i_private; \
- \
- return single_open(file, qla_dfs_##_name##_show, __ctx); \
-} \
- \
-static const struct file_operations qla_dfs_##_name##_ops = { \
- .open = qla_dfs_##_name##_open, \
- .read = seq_read, \
- .llseek = seq_lseek, \
- .release = single_release, \
-};
-
-#define QLA_DFS_SETUP_RW(_name, _ctx_struct) \
-static int \
-qla_dfs_##_name##_open(struct inode *inode, struct file *file) \
-{ \
- _ctx_struct *__ctx = inode->i_private; \
- \
- return single_open(file, qla_dfs_##_name##_show, __ctx); \
-} \
- \
-static const struct file_operations qla_dfs_##_name##_ops = { \
- .open = qla_dfs_##_name##_open, \
- .read = seq_read, \
- .llseek = seq_lseek, \
- .release = single_release, \
- .write = qla_dfs_##_name##_write, \
-};
-
-#define QLA_DFS_ROOT_CREATE_FILE(_name, _perm, _ctx) \
- do { \
- if (!qla_dfs_##_name) \
- qla_dfs_##_name = debugfs_create_file(#_name, \
- _perm, qla2x00_dfs_root, _ctx, \
- &qla_dfs_##_name##_ops); \
- } while (0)
-
-#define QLA_DFS_ROOT_REMOVE_FILE(_name) \
- do { \
- if (qla_dfs_##_name) { \
- debugfs_remove(qla_dfs_##_name); \
- qla_dfs_##_name = NULL; \
- } \
- } while (0)
-
-#define QLA_DFS_CREATE_FILE(_struct, _name, _perm, _parent, _ctx) \
- do { \
- (_struct)->dfs_##_name = debugfs_create_file(#_name, \
- _perm, _parent, _ctx, \
- &qla_dfs_##_name##_ops) \
- } while (0)
-
-#define QLA_DFS_REMOVE_FILE(_struct, _name) \
- do { \
- if ((_struct)->dfs_##_name) { \
- debugfs_remove((_struct)->dfs_##_name); \
- (_struct)->dfs_##_name = NULL; \
- } \
- } while (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)
@@ -653,15 +552,7 @@ qla_dfs_naqp_write(struct file *file, const char __user *buffer,
kfree(buf);
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_SHOW_STORE_ATTRIBUTE(qla_dfs_naqp);
int
qla2x00_dfs_setup(scsi_qla_host_t *vha)
@@ -707,7 +598,7 @@ 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_fops);
if (!ha->tgt.dfs_naqp) {
ql_log(ql_log_warn, vha, 0xd011,
"Unable to create debugFS naqp node.\n");
--
2.17.1
