change system file

hc

2024-10-09 244b2c5ca8b14627e4a17755e5922221e121c771

 kernel/drivers/iio/buffer/kfifo_buf.c
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@@ -1,3 +1,4 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 #include <linux/slab.h>
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 #include <linux/kernel.h>
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 #include <linux/module.h>
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@@ -97,8 +98,7 @@
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 	return 0;
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 }
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-static int iio_read_first_n_kfifo(struct iio_buffer *r,
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-			   size_t n, char __user *buf)
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+static int iio_read_kfifo(struct iio_buffer *r, size_t n, char __user *buf)
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 {
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 	int ret, copied;
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 	struct iio_kfifo *kf = iio_to_kfifo(r);
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@@ -140,7 +140,7 @@
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 static const struct iio_buffer_access_funcs kfifo_access_funcs = {
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 	.store_to = &iio_store_to_kfifo,
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-	.read_first_n = &iio_read_first_n_kfifo,
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+	.read = &iio_read_kfifo,
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 	.data_available = iio_kfifo_buf_data_available,
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 	.request_update = &iio_request_update_kfifo,
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 	.set_bytes_per_datum = &iio_set_bytes_per_datum_kfifo,
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@@ -179,16 +179,6 @@
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 	iio_kfifo_free(*(struct iio_buffer **)res);
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 }
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-static int devm_iio_kfifo_match(struct device *dev, void *res, void *data)
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-{
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-	struct iio_buffer **r = res;
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-
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-	if (WARN_ON(!r || !*r))
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-		return 0;
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-
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-	return *r == data;
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-}
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-
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 /**
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  * devm_iio_fifo_allocate - Resource-managed iio_kfifo_allocate()
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  * @dev:		Device to allocate kfifo buffer for
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@@ -215,17 +205,5 @@
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 	return r;
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 }
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 EXPORT_SYMBOL(devm_iio_kfifo_allocate);
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-
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-/**
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- * devm_iio_fifo_free - Resource-managed iio_kfifo_free()
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- * @dev:		Device the buffer belongs to
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- * @r:			The buffer associated with the device
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- */
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-void devm_iio_kfifo_free(struct device *dev, struct iio_buffer *r)
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-{
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-	WARN_ON(devres_release(dev, devm_iio_kfifo_release,
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-			       devm_iio_kfifo_match, r));
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-}
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-EXPORT_SYMBOL(devm_iio_kfifo_free);
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 MODULE_LICENSE("GPL");