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Input: db9 - fix possible crash with Saturn gamepads

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Signed-off-by: Dmitry Torokhov <dtor@mail.ru>
This commit is contained in:
Dmitry Torokhov 2006-01-29 21:51:31 -05:00
parent 0399addd71
commit 84c61896bd
1 changed files with 36 additions and 34 deletions
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70
drivers/input/joystick/db9.c
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@ -275,68 +275,70 @@ static unsigned char db9_saturn_read_packet(struct parport *port, unsigned char
/* /*
* db9_saturn_report() analyzes packet and reports. * db9_saturn_report() analyzes packet and reports.
*/ */
static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *dev, int n, int max_pads) static int db9_saturn_report(unsigned char id, unsigned char data[60], struct input_dev *devs[], int n, int max_pads)
{ {
struct input_dev *dev;
int tmp, i, j; int tmp, i, j;
tmp = (id == 0x41) ? 60 : 10; tmp = (id == 0x41) ? 60 : 10;
for (j = 0; (j < tmp) && (n < max_pads); j += 10, n++) { for (j = 0; j < tmp && n < max_pads; j += 10, n++) {
dev = devs[n];
switch (data[j]) { switch (data[j]) {
case 0x16: /* multi controller (analog 4 axis) */ case 0x16: /* multi controller (analog 4 axis) */
input_report_abs(dev + n, db9_abs[5], data[j + 6]); input_report_abs(dev, db9_abs[5], data[j + 6]);
case 0x15: /* mission stick (analog 3 axis) */ case 0x15: /* mission stick (analog 3 axis) */
input_report_abs(dev + n, db9_abs[3], data[j + 4]); input_report_abs(dev, db9_abs[3], data[j + 4]);
input_report_abs(dev + n, db9_abs[4], data[j + 5]); input_report_abs(dev, db9_abs[4], data[j + 5]);
case 0x13: /* racing controller (analog 1 axis) */ case 0x13: /* racing controller (analog 1 axis) */
input_report_abs(dev + n, db9_abs[2], data[j + 3]); input_report_abs(dev, db9_abs[2], data[j + 3]);
case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */ case 0x34: /* saturn keyboard (udlr ZXC ASD QE Esc) */
case 0x02: /* digital pad (digital 2 axis + buttons) */ case 0x02: /* digital pad (digital 2 axis + buttons) */
input_report_abs(dev + n, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
input_report_abs(dev + n, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
for (i = 0; i < 9; i++) for (i = 0; i < 9; i++)
input_report_key(dev + n, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
break; break;
case 0x19: /* mission stick x2 (analog 6 axis + buttons) */ case 0x19: /* mission stick x2 (analog 6 axis + buttons) */
input_report_abs(dev + n, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64)); input_report_abs(dev, db9_abs[0], !(data[j + 1] & 128) - !(data[j + 1] & 64));
input_report_abs(dev + n, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16)); input_report_abs(dev, db9_abs[1], !(data[j + 1] & 32) - !(data[j + 1] & 16));
for (i = 0; i < 9; i++) for (i = 0; i < 9; i++)
input_report_key(dev + n, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]); input_report_key(dev, db9_cd32_btn[i], ~data[j + db9_saturn_byte[i]] & db9_saturn_mask[i]);
input_report_abs(dev + n, db9_abs[2], data[j + 3]); input_report_abs(dev, db9_abs[2], data[j + 3]);
input_report_abs(dev + n, db9_abs[3], data[j + 4]); input_report_abs(dev, db9_abs[3], data[j + 4]);
input_report_abs(dev + n, db9_abs[4], data[j + 5]); input_report_abs(dev, db9_abs[4], data[j + 5]);
/* /*
input_report_abs(dev + n, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1)); input_report_abs(dev, db9_abs[8], (data[j + 6] & 128 ? 0 : 1) - (data[j + 6] & 64 ? 0 : 1));
input_report_abs(dev + n, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1)); input_report_abs(dev, db9_abs[9], (data[j + 6] & 32 ? 0 : 1) - (data[j + 6] & 16 ? 0 : 1));
*/ */
input_report_abs(dev + n, db9_abs[6], data[j + 7]); input_report_abs(dev, db9_abs[6], data[j + 7]);
input_report_abs(dev + n, db9_abs[7], data[j + 8]); input_report_abs(dev, db9_abs[7], data[j + 8]);
input_report_abs(dev + n, db9_abs[5], data[j + 9]); input_report_abs(dev, db9_abs[5], data[j + 9]);
break; break;
case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */ case 0xd3: /* sankyo ff (analog 1 axis + stop btn) */
input_report_key(dev + n, BTN_A, data[j + 3] & 0x80); input_report_key(dev, BTN_A, data[j + 3] & 0x80);
input_report_abs(dev + n, db9_abs[2], data[j + 3] & 0x7f); input_report_abs(dev, db9_abs[2], data[j + 3] & 0x7f);
break; break;
case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */ case 0xe3: /* shuttle mouse (analog 2 axis + buttons. signed value) */
input_report_key(dev + n, BTN_START, data[j + 1] & 0x08); input_report_key(dev, BTN_START, data[j + 1] & 0x08);
input_report_key(dev + n, BTN_A, data[j + 1] & 0x04); input_report_key(dev, BTN_A, data[j + 1] & 0x04);
input_report_key(dev + n, BTN_C, data[j + 1] & 0x02); input_report_key(dev, BTN_C, data[j + 1] & 0x02);
input_report_key(dev + n, BTN_B, data[j + 1] & 0x01); input_report_key(dev, BTN_B, data[j + 1] & 0x01);
input_report_abs(dev + n, db9_abs[2], data[j + 2] ^ 0x80); input_report_abs(dev, db9_abs[2], data[j + 2] ^ 0x80);
input_report_abs(dev + n, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */ input_report_abs(dev, db9_abs[3], (0xff-(data[j + 3] ^ 0x80))+1); /* */
break; break;
case 0xff: case 0xff:
default: /* no pad */ default: /* no pad */
input_report_abs(dev + n, db9_abs[0], 0); input_report_abs(dev, db9_abs[0], 0);
input_report_abs(dev + n, db9_abs[1], 0); input_report_abs(dev, db9_abs[1], 0);
for (i = 0; i < 9; i++) for (i = 0; i < 9; i++)
input_report_key(dev + n, db9_cd32_btn[i], 0); input_report_key(dev, db9_cd32_btn[i], 0);
break; break;
} }
} }
return n; return n;
} }
static int db9_saturn(int mode, struct parport *port, struct input_dev *dev) static int db9_saturn(int mode, struct parport *port, struct input_dev *devs[])
{ {
unsigned char id, data[60]; unsigned char id, data[60];
int type, n, max_pads; int type, n, max_pads;
@ -361,7 +363,7 @@ static int db9_saturn(int mode, struct parport *port, struct input_dev *dev)
max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES); max_pads = min(db9_modes[mode].n_pads, DB9_MAX_DEVICES);
for (tmp = 0, i = 0; i < n; i++) { for (tmp = 0, i = 0; i < n; i++) {
id = db9_saturn_read_packet(port, data, type + i, 1); id = db9_saturn_read_packet(port, data, type + i, 1);
tmp = db9_saturn_report(id, data, dev, tmp, max_pads); tmp = db9_saturn_report(id, data, devs, tmp, max_pads);
} }
return 0; return 0;
} }
@ -489,7 +491,7 @@ static void db9_timer(unsigned long private)
case DB9_SATURN_DPP: case DB9_SATURN_DPP:
case DB9_SATURN_DPP_2: case DB9_SATURN_DPP_2:
db9_saturn(db9->mode, port, dev); db9_saturn(db9->mode, port, db9->dev);
break; break;
case DB9_CD32_PAD: case DB9_CD32_PAD: