[PATCH] s390: convert to DEFINE_SHOW_ATTRIBUTE

From: Yangtao Li
Date: Sat Dec 01 2018 - 22:28:16 EST


Use DEFINE_SHOW_ATTRIBUTE macro to simplify the code.

Signed-off-by: Yangtao Li <tiny.windzz@xxxxxxxxx>
---
drivers/s390/block/dasd.c | 15 +--------------
drivers/s390/cio/qdio_debug.c | 16 ++--------------
2 files changed, 3 insertions(+), 28 deletions(-)

diff --git a/drivers/s390/block/dasd.c b/drivers/s390/block/dasd.c
index 5e9ebdb0594c..397af07e4d88 100644
--- a/drivers/s390/block/dasd.c
+++ b/drivers/s390/block/dasd.c
@@ -1192,20 +1192,7 @@ static int dasd_hosts_show(struct seq_file *m, void *v)
return rc;
}

-static int dasd_hosts_open(struct inode *inode, struct file *file)
-{
- struct dasd_device *device = inode->i_private;
-
- return single_open(file, dasd_hosts_show, device);
-}
-
-static const struct file_operations dasd_hosts_fops = {
- .owner = THIS_MODULE,
- .open = dasd_hosts_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(dasd_hosts);

static void dasd_hosts_exit(struct dasd_device *device)
{
diff --git a/drivers/s390/cio/qdio_debug.c b/drivers/s390/cio/qdio_debug.c
index 68a82f3e2e92..040061f2bfff 100644
--- a/drivers/s390/cio/qdio_debug.c
+++ b/drivers/s390/cio/qdio_debug.c
@@ -190,19 +190,7 @@ static int qstat_show(struct seq_file *m, void *v)
return 0;
}

-static int qstat_seq_open(struct inode *inode, struct file *filp)
-{
- return single_open(filp, qstat_show,
- file_inode(filp)->i_private);
-}
-
-static const struct file_operations debugfs_fops = {
- .owner = THIS_MODULE,
- .open = qstat_seq_open,
- .read = seq_read,
- .llseek = seq_lseek,
- .release = single_release,
-};
+DEFINE_SHOW_ATTRIBUTE(qstat);

static char *qperf_names[] = {
"Assumed adapter interrupts",
@@ -306,7 +294,7 @@ static void setup_debugfs_entry(struct qdio_q *q)
q->is_input_q ? "input" : "output",
q->nr);
q->debugfs_q = debugfs_create_file(name, S_IFREG | S_IRUGO | S_IWUSR,
- q->irq_ptr->debugfs_dev, q, &debugfs_fops);
+ q->irq_ptr->debugfs_dev, q, &qstat_fops);
if (IS_ERR(q->debugfs_q))
q->debugfs_q = NULL;
}
--
2.17.0