Revision 6045dd7e5955f0175c9075f8ba80015369d6b201 authored by Rikard Falkeborn on 08 May 2020, 21:44:21 UTC, committed by Felipe Balbi on 14 May 2020, 09:42:53 UTC
mtu3_prb_regs is never changed and can therefore be made const.

This allows the compiler to put it in the text section instead of the
data section.

Before:
   text    data     bss     dec     hex filename
  19966    7120       0   27086    69ce drivers/usb/mtu3/mtu3_debugfs.o

After:
   text    data     bss     dec     hex filename
  20142    6992       0   27134    69fe drivers/usb/mtu3/mtu3_debugfs.o

Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com>
Signed-off-by: Felipe Balbi <balbi@kernel.org>
1 parent 4210f3a
Raw File
internals.h
/* SPDX-License-Identifier: GPL-2.0+ */
/*
 * Copyright (C) 2018 Exceet Electronics GmbH
 * Copyright (C) 2018 Bootlin
 *
 * Author: Boris Brezillon <boris.brezillon@bootlin.com>
 *
 * Helpers needed by the spi or spi-mem logic. Should not be used outside of
 * spi-mem.c and spi.c.
 */

#ifndef __LINUX_SPI_INTERNALS_H
#define __LINUX_SPI_INTERNALS_H

#include <linux/device.h>
#include <linux/dma-direction.h>
#include <linux/scatterlist.h>
#include <linux/spi/spi.h>

void spi_flush_queue(struct spi_controller *ctrl);

#ifdef CONFIG_HAS_DMA
int spi_map_buf(struct spi_controller *ctlr, struct device *dev,
		struct sg_table *sgt, void *buf, size_t len,
		enum dma_data_direction dir);
void spi_unmap_buf(struct spi_controller *ctlr, struct device *dev,
		   struct sg_table *sgt, enum dma_data_direction dir);
#else /* !CONFIG_HAS_DMA */
static inline int spi_map_buf(struct spi_controller *ctlr, struct device *dev,
			      struct sg_table *sgt, void *buf, size_t len,
			      enum dma_data_direction dir)
{
	return -EINVAL;
}

static inline void spi_unmap_buf(struct spi_controller *ctlr,
				 struct device *dev, struct sg_table *sgt,
				 enum dma_data_direction dir)
{
}
#endif /* CONFIG_HAS_DMA */

#endif /* __LINUX_SPI_INTERNALS_H */
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