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mfd: Constify WM8994 write path

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Allow const buffers to be passed in without type safety issues.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mark Brown 2011-03-17 21:42:30 +00:00 committed by Samuel Ortiz
parent 4277163c2a
commit 07e73fbb2d
2 changed files with 6 additions and 6 deletions
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8
drivers/mfd/wm8994-core.c
View file

@ -97,9 +97,9 @@ int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
EXPORT_SYMBOL_GPL(wm8994_bulk_read);
static int wm8994_write(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *src)
int bytes, const void *src)
{
u16 *buf = src;
const u16 *buf = src;
int i;
BUG_ON(bytes % 2);
@ -146,7 +146,7 @@ EXPORT_SYMBOL_GPL(wm8994_reg_write);
* @buf: Buffer to write from. Data must be big-endian formatted.
*/
int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf)
int count, const u16 *buf)
{
int ret;
@ -583,7 +583,7 @@ static int wm8994_i2c_read_device(struct wm8994 *wm8994, unsigned short reg,
}
static int wm8994_i2c_write_device(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *src)
int bytes, const void *src)
{
struct i2c_client *i2c = wm8994->control_data;
struct i2c_msg xfer[2];

4
include/linux/mfd/wm8994/core.h
View file

@ -59,7 +59,7 @@ struct wm8994 {
int (*read_dev)(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *dest);
int (*write_dev)(struct wm8994 *wm8994, unsigned short reg,
int bytes, void *src);
int bytes, const void *src);
void *control_data;
@ -89,7 +89,7 @@ int wm8994_set_bits(struct wm8994 *wm8994, unsigned short reg,
int wm8994_bulk_read(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf);
int wm8994_bulk_write(struct wm8994 *wm8994, unsigned short reg,
int count, u16 *buf);
int count, const u16 *buf);
/* Helper to save on boilerplate */