[PATCH 142/437] drm: mipi: convert to read/write iterators

Jens Axboe
2024-04-11T15:35:38Z

drivers/gpu/drm/drm_mipi_dbi.c | 14 +++++++-------
1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/drm_mipi_dbi.c b/drivers/gpu/drm/drm_mipi_dbi.c
index daac649aabdb..43198c3b2eed 100644
--- a/drivers/gpu/drm/drm_mipi_dbi.c
+++ b/drivers/gpu/drm/drm_mipi_dbi.c
@@ -1332,12 +1332,12 @@ EXPORT_SYMBOL(mipi_dbi_spi_transfer);

#ifdef CONFIG_DEBUG_FS

-static ssize_t mipi_dbi_debugfs_command_write(struct file *file,
- const char __user *ubuf,
- size_t count, loff_t *ppos)
+static ssize_t mipi_dbi_debugfs_command_write(struct kiocb *iocb,
+ struct iov_iter *from)
{
- struct seq_file *m = file->private_data;
+ struct seq_file *m = iocb->ki_filp->private_data;
struct mipi_dbi_dev *dbidev = m->private;
+ size_t count = iov_iter_count(from);
u8 val, cmd = 0, parameters[64];
char *buf, *pos, *token;
int i, ret, idx;
@@ -1345,7 +1345,7 @@ static ssize_t mipi_dbi_debugfs_command_write(struct file *file,
if (!drm_dev_enter(&dbidev->drm, &idx))
return -ENODEV;

- buf = memdup_user_nul(ubuf, count);
+ buf = iterdup_nul(from, count);
if (IS_ERR(buf)) {
ret = PTR_ERR(buf);
goto err_exit;
@@ -1446,10 +1446,10 @@ static int mipi_dbi_debugfs_command_open(struct inode *inode,
static const struct file_operations mipi_dbi_debugfs_command_fops = {
.owner = THIS_MODULE,
.open = mipi_dbi_debugfs_command_open,
- .read = seq_read,
+ .read_iter = seq_read_iter,
.llseek = seq_lseek,
.release = single_release,
- .write = mipi_dbi_debugfs_command_write,
+ .write_iter = mipi_dbi_debugfs_command_write,
};

/**
--
2.43.0