[PATCH 405/437] infiniband/cxgb4: convert to read/write iterators

Jens Axboe
2024-04-11T15:43:00Z

drivers/infiniband/hw/cxgb4/device.c | 35 +++++++++++++---------------
1 file changed, 16 insertions(+), 19 deletions(-)

diff --git a/drivers/infiniband/hw/cxgb4/device.c b/drivers/infiniband/hw/cxgb4/device.c
index 80970a1738f8..7067ecc4f9e6 100644
--- a/drivers/infiniband/hw/cxgb4/device.c
+++ b/drivers/infiniband/hw/cxgb4/device.c
@@ -81,12 +81,11 @@ struct c4iw_debugfs_data {
int pos;
};

-static ssize_t debugfs_read(struct file *file, char __user *buf, size_t count,
- loff_t *ppos)
+static ssize_t debugfs_read(struct kiocb *iocb, struct iov_iter *to)
{
- struct c4iw_debugfs_data *d = file->private_data;
+ struct c4iw_debugfs_data *d = iocb->ki_filp->private_data;

- return simple_read_from_buffer(buf, count, ppos, d->buf, d->pos);
+ return simple_copy_to_iter(d->buf, &iocb->ki_pos, d->pos, to);
}

void c4iw_log_wr_stats(struct t4_wq *wq, struct t4_cqe *cqe)
@@ -175,25 +174,24 @@ static int wr_log_open(struct inode *inode, struct file *file)
return single_open(file, wr_log_show, inode->i_private);
}

-static ssize_t wr_log_clear(struct file *file, const char __user *buf,
- size_t count, loff_t *pos)
+static ssize_t wr_log_clear(struct kiocb *iocb, struct iov_iter *from)
{
- struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private;
+ struct c4iw_dev *dev = ((struct seq_file *)iocb->ki_filp->private_data)->private;
int i;

if (dev->rdev.wr_log)
for (i = 0; i < dev->rdev.wr_log_size; i++)
dev->rdev.wr_log[i].valid = 0;
- return count;
+ return iov_iter_count(from);
}

static const struct file_operations wr_log_debugfs_fops = {
.owner = THIS_MODULE,
.open = wr_log_open,
.release = single_release,
- .read = seq_read,
+ .read_iter = seq_read_iter,
.llseek = seq_lseek,
- .write = wr_log_clear,
+ .write_iter = wr_log_clear,
};

static struct sockaddr_in zero_sin = {
@@ -365,7 +363,7 @@ static const struct file_operations qp_debugfs_fops = {
.owner = THIS_MODULE,
.open = qp_open,
.release = qp_release,
- .read = debugfs_read,
+ .read_iter = debugfs_read,
.llseek = default_llseek,
};

@@ -460,7 +458,7 @@ static const struct file_operations stag_debugfs_fops = {
.owner = THIS_MODULE,
.open = stag_open,
.release = stag_release,
- .read = debugfs_read,
+ .read_iter = debugfs_read,
.llseek = default_llseek,
};

@@ -515,10 +513,9 @@ static int stats_open(struct inode *inode, struct file *file)
return single_open(file, stats_show, inode->i_private);
}

-static ssize_t stats_clear(struct file *file, const char __user *buf,
- size_t count, loff_t *pos)
+static ssize_t stats_clear(struct kiocb *iocb, struct iov_iter *from)
{
- struct c4iw_dev *dev = ((struct seq_file *)file->private_data)->private;
+ struct c4iw_dev *dev = ((struct seq_file *)iocb->ki_filp->private_data)->private;

mutex_lock(&dev->rdev.stats.lock);
dev->rdev.stats.pd.max = 0;
@@ -543,16 +540,16 @@ static ssize_t stats_clear(struct file *file, const char __user *buf,
dev->rdev.stats.act_ofld_conn_fails = 0;
dev->rdev.stats.pas_ofld_conn_fails = 0;
mutex_unlock(&dev->rdev.stats.lock);
- return count;
+ return iov_iter_count(from);
}

static const struct file_operations stats_debugfs_fops = {
.owner = THIS_MODULE,
.open = stats_open,
.release = single_release,
- .read = seq_read,
+ .read_iter = seq_read_iter,
.llseek = seq_lseek,
- .write = stats_clear,
+ .write_iter = stats_clear,
};

static int dump_ep(struct c4iw_ep *ep, struct c4iw_debugfs_data *epd)
@@ -722,7 +719,7 @@ static const struct file_operations ep_debugfs_fops = {
.owner = THIS_MODULE,
.open = ep_open,
.release = ep_release,
- .read = debugfs_read,
+ .read_iter = debugfs_read,
};

static void setup_debugfs(struct c4iw_dev *devp)
--
2.43.0