Kalle Valo [off-list ref] writes:

quoted

--- /dev/null
+++ b/drivers/net/wireless/silabs/wfx/hwio.h

@@ -0,0 +1,79 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
+/*
+ * Low-level I/O functions.
+ *
+ * Copyright (c) 2017-2020, Silicon Laboratories, Inc.
+ * Copyright (c) 2010, ST-Ericsson
+ */
+#ifndef WFX_HWIO_H
+#define WFX_HWIO_H
+
+#include <linux/types.h>
+
+struct wfx_dev;
+
+/* Caution: in the functions below, 'buf' will used with a DMA. So, it must be
+ * kmalloc'd (do not use stack allocated buffers). In doubt, enable
+ * CONFIG_DEBUG_SG to detect badly located buffer.
+ */
+int wfx_data_read(struct wfx_dev *wdev, void *buf, size_t buf_len);
+int wfx_data_write(struct wfx_dev *wdev, const void *buf, size_t buf_len);
+
+int sram_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len);
+int sram_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len);
+
+int ahb_buf_read(struct wfx_dev *wdev, u32 addr, void *buf, size_t len);
+int ahb_buf_write(struct wfx_dev *wdev, u32 addr, const void *buf, size_t len);
+
+int sram_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val);
+int sram_reg_write(struct wfx_dev *wdev, u32 addr, u32 val);
+
+int ahb_reg_read(struct wfx_dev *wdev, u32 addr, u32 *val);
+int ahb_reg_write(struct wfx_dev *wdev, u32 addr, u32 val);

"wfx_" prefix missing from these functions.

I actually saw quite a few functions without wfx_ prefix. My preference
is that all function names would have that prefix.

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