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From: Jens Axboe <axboe@kernel.dk>
To: linux-kernel@vger.kernel.org
Cc: Jens Axboe <axboe@kernel.dk>
Subject: [PATCH 134/437] drivers/regulator: convert to read/write iterators
Date: Thu, 11 Apr 2024 09:14:34 -0600
Message-ID: <20240411153126.16201-135-axboe@kernel.dk>
In-Reply-To: <20240411153126.16201-1-axboe@kernel.dk>
References: <20240411153126.16201-1-axboe@kernel.dk>
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Signed-off-by: Jens Axboe <axboe@kernel.dk>
---
 drivers/regulator/core.c | 12 +++++-------
 1 file changed, 5 insertions(+), 7 deletions(-)

diff --git a/drivers/regulator/core.c b/drivers/regulator/core.c
index dabac9772741..92fad0d0fb9c 100644
--- a/drivers/regulator/core.c
+++ b/drivers/regulator/core.c
@@ -1810,11 +1810,10 @@ static void unset_regulator_supplies(struct regulator_dev *rdev)
 }
 
 #ifdef CONFIG_DEBUG_FS
-static ssize_t constraint_flags_read_file(struct file *file,
-					  char __user *user_buf,
-					  size_t count, loff_t *ppos)
+static ssize_t constraint_flags_read_file(struct kiocb *iocb,
+					  struct iov_iter *to)
 {
-	const struct regulator *regulator = file->private_data;
+	const struct regulator *regulator = iocb->ki_filp->private_data;
 	const struct regulation_constraints *c = regulator->rdev->constraints;
 	char *buf;
 	ssize_t ret;
@@ -1842,9 +1841,8 @@ static ssize_t constraint_flags_read_file(struct file *file,
 			c->pull_down,
 			c->over_current_protection);
 
-	ret = simple_read_from_buffer(user_buf, count, ppos, buf, ret);
+	ret = simple_copy_to_iter(buf, &iocb->ki_pos, ret, to);
 	kfree(buf);
-
 	return ret;
 }
 
@@ -1853,7 +1851,7 @@ static ssize_t constraint_flags_read_file(struct file *file,
 static const struct file_operations constraint_flags_fops = {
 #ifdef CONFIG_DEBUG_FS
 	.open = simple_open,
-	.read = constraint_flags_read_file,
+	.read_iter = constraint_flags_read_file,
 	.llseek = default_llseek,
 #endif
 };
-- 
2.43.0