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spi: Use void pointers for data in simple SPI I/O operations

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Currently the simple SPI I/O operations all take pointers to u8 * buffers
to operate on. This creates needless type compatibility issues and the
underlying spi_transfer structure uses void pointers anyway so convert the
API over to take void pointers too.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
This commit is contained in:
Mark Brown 2011-05-11 00:09:30 +02:00 committed by Grant Likely
parent 521999bd4a
commit 0c4a159018
2 changed files with 6 additions and 6 deletions
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4
drivers/spi/spi.c
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@ -1047,8 +1047,8 @@ static u8 *buf;
* spi_{async,sync}() calls with dma-safe buffers.
*/
int spi_write_then_read(struct spi_device *spi,
const u8 *txbuf, unsigned n_tx,
u8 *rxbuf, unsigned n_rx)
const void *txbuf, unsigned n_tx,
void *rxbuf, unsigned n_rx)
{
static DEFINE_MUTEX(lock);

8
include/linux/spi/spi.h
View File

@ -581,7 +581,7 @@ extern int spi_bus_unlock(struct spi_master *master);
* Callable only from contexts that can sleep.
*/
static inline int
spi_write(struct spi_device *spi, const u8 *buf, size_t len)
spi_write(struct spi_device *spi, const void *buf, size_t len)
{
struct spi_transfer t = {
.tx_buf = buf,
@ -605,7 +605,7 @@ spi_write(struct spi_device *spi, const u8 *buf, size_t len)
* Callable only from contexts that can sleep.
*/
static inline int
spi_read(struct spi_device *spi, u8 *buf, size_t len)
spi_read(struct spi_device *spi, void *buf, size_t len)
{
struct spi_transfer t = {
.rx_buf = buf,
@ -620,8 +620,8 @@ spi_read(struct spi_device *spi, u8 *buf, size_t len)
/* this copies txbuf and rxbuf data; for small transfers only! */
extern int spi_write_then_read(struct spi_device *spi,
const u8 *txbuf, unsigned n_tx,
u8 *rxbuf, unsigned n_rx);
const void *txbuf, unsigned n_tx,
void *rxbuf, unsigned n_rx);
/**
* spi_w8r8 - SPI synchronous 8 bit write followed by 8 bit read