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Input: alps - change decode function prototype to return an int 

So that decode functions can return a failure when appropriate.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
This commit is contained in:
Hans de Goede 2014-07-25 22:48:44 -07:00 committed by Dmitry Torokhov
parent 99d9996c5c
commit 38c11eaaab
2 changed files with 10 additions and 4 deletions
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12
drivers/input/mouse/alps.c
View File

@ -538,7 +538,7 @@ static void alps_decode_buttons_v3(struct alps_fields *f, unsigned char *p)
f->ts_middle = !!(p[3] & 0x40);
}
static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
static int alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
struct psmouse *psmouse)
{
f->first_mp = !!(p[4] & 0x40);
@ -558,9 +558,11 @@ static void alps_decode_pinnacle(struct alps_fields *f, unsigned char *p,
f->pressure = p[5] & 0x7f;
alps_decode_buttons_v3(f, p);
return 0;
}
static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
static int alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
struct psmouse *psmouse)
{
alps_decode_pinnacle(f, p, psmouse);
@ -570,9 +572,11 @@ static void alps_decode_rushmore(struct alps_fields *f, unsigned char *p,
f->fingers = max((p[5] & 0x3), ((p[5] >> 2) & 0x3)) + 1;
f->x_map |= (p[5] & 0x10) << 11;
f->y_map |= (p[5] & 0x20) << 6;
return 0;
}
static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
static int alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
struct psmouse *psmouse)
{
u64 palm_data = 0;
@ -605,6 +609,8 @@ static void alps_decode_dolphin(struct alps_fields *f, unsigned char *p,
f->x_map = (palm_data >> priv->y_bits) &
(BIT(priv->x_bits) - 1);
}
return 0;
}
static void alps_process_touchpad_packet_v3_v5(struct psmouse *psmouse)

2
drivers/input/mouse/alps.h
View File

@ -157,7 +157,7 @@ struct alps_data {
int (*hw_init)(struct psmouse *psmouse);
void (*process_packet)(struct psmouse *psmouse);
void (*decode_fields)(struct alps_fields *f, unsigned char *p,
int (*decode_fields)(struct alps_fields *f, unsigned char *p,
struct psmouse *psmouse);
void (*set_abs_params)(struct alps_data *priv, struct input_dev *dev1);