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-rw-r--r--drivers/input/serio/libps2.c131
1 files changed, 65 insertions, 66 deletions
diff --git a/drivers/input/serio/libps2.c b/drivers/input/serio/libps2.c
index 83e9c663aa67..21aea5169a99 100644
--- a/drivers/input/serio/libps2.c
+++ b/drivers/input/serio/libps2.c
@@ -126,46 +126,46 @@ EXPORT_SYMBOL(ps2_is_keyboard_id);
static int ps2_adjust_timeout(struct ps2dev *ps2dev, int command, int timeout)
{
switch (command) {
- case PS2_CMD_RESET_BAT:
- /*
- * Device has sent the first response byte after
- * reset command, reset is thus done, so we can
- * shorten the timeout.
- * The next byte will come soon (keyboard) or not
- * at all (mouse).
- */
- if (timeout > msecs_to_jiffies(100))
- timeout = msecs_to_jiffies(100);
- break;
+ case PS2_CMD_RESET_BAT:
+ /*
+ * Device has sent the first response byte after
+ * reset command, reset is thus done, so we can
+ * shorten the timeout.
+ * The next byte will come soon (keyboard) or not
+ * at all (mouse).
+ */
+ if (timeout > msecs_to_jiffies(100))
+ timeout = msecs_to_jiffies(100);
+ break;
- case PS2_CMD_GETID:
- /*
- * Microsoft Natural Elite keyboard responds to
- * the GET ID command as it were a mouse, with
- * a single byte. Fail the command so atkbd will
- * use alternative probe to detect it.
- */
- if (ps2dev->cmdbuf[1] == 0xaa) {
- serio_pause_rx(ps2dev->serio);
- ps2dev->flags = 0;
- serio_continue_rx(ps2dev->serio);
- timeout = 0;
- }
-
- /*
- * If device behind the port is not a keyboard there
- * won't be 2nd byte of ID response.
- */
- if (!ps2_is_keyboard_id(ps2dev->cmdbuf[1])) {
- serio_pause_rx(ps2dev->serio);
- ps2dev->flags = ps2dev->cmdcnt = 0;
- serio_continue_rx(ps2dev->serio);
- timeout = 0;
- }
- break;
+ case PS2_CMD_GETID:
+ /*
+ * Microsoft Natural Elite keyboard responds to
+ * the GET ID command as it were a mouse, with
+ * a single byte. Fail the command so atkbd will
+ * use alternative probe to detect it.
+ */
+ if (ps2dev->cmdbuf[1] == 0xaa) {
+ serio_pause_rx(ps2dev->serio);
+ ps2dev->flags = 0;
+ serio_continue_rx(ps2dev->serio);
+ timeout = 0;
+ }
- default:
- break;
+ /*
+ * If device behind the port is not a keyboard there
+ * won't be 2nd byte of ID response.
+ */
+ if (!ps2_is_keyboard_id(ps2dev->cmdbuf[1])) {
+ serio_pause_rx(ps2dev->serio);
+ ps2dev->flags = ps2dev->cmdcnt = 0;
+ serio_continue_rx(ps2dev->serio);
+ timeout = 0;
+ }
+ break;
+
+ default:
+ break;
}
return timeout;
@@ -289,39 +289,38 @@ EXPORT_SYMBOL(ps2_init);
int ps2_handle_ack(struct ps2dev *ps2dev, unsigned char data)
{
switch (data) {
- case PS2_RET_ACK:
- ps2dev->nak = 0;
+ case PS2_RET_ACK:
+ ps2dev->nak = 0;
+ break;
+
+ case PS2_RET_NAK:
+ ps2dev->flags |= PS2_FLAG_NAK;
+ ps2dev->nak = PS2_RET_NAK;
+ break;
+
+ case PS2_RET_ERR:
+ if (ps2dev->flags & PS2_FLAG_NAK) {
+ ps2dev->flags &= ~PS2_FLAG_NAK;
+ ps2dev->nak = PS2_RET_ERR;
break;
+ }
- case PS2_RET_NAK:
- ps2dev->flags |= PS2_FLAG_NAK;
- ps2dev->nak = PS2_RET_NAK;
+ /*
+ * Workaround for mice which don't ACK the Get ID command.
+ * These are valid mouse IDs that we recognize.
+ */
+ case 0x00:
+ case 0x03:
+ case 0x04:
+ if (ps2dev->flags & PS2_FLAG_WAITID) {
+ ps2dev->nak = 0;
break;
-
- case PS2_RET_ERR:
- if (ps2dev->flags & PS2_FLAG_NAK) {
- ps2dev->flags &= ~PS2_FLAG_NAK;
- ps2dev->nak = PS2_RET_ERR;
- break;
- }
-
- /*
- * Workaround for mice which don't ACK the Get ID command.
- * These are valid mouse IDs that we recognize.
- */
- case 0x00:
- case 0x03:
- case 0x04:
- if (ps2dev->flags & PS2_FLAG_WAITID) {
- ps2dev->nak = 0;
- break;
- }
- /* Fall through */
- default:
- return 0;
+ }
+ /* Fall through */
+ default:
+ return 0;
}
-
if (!ps2dev->nak) {
ps2dev->flags &= ~PS2_FLAG_NAK;
if (ps2dev->cmdcnt)