The first element of the key array is not used. Remove it, and along with it a uninitialized memory read. This should fix the rc debug message. Link: https://www.spinics.net/lists/kernel/msg3374861.html Suggested-by: Phong Tran <tranmanphong@xxxxxxxxx> Signed-off-by: Sean Young <sean@xxxxxxxx> --- drivers/media/usb/dvb-usb/digitv.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/drivers/media/usb/dvb-usb/digitv.c b/drivers/media/usb/dvb-usb/digitv.c index 99a39339d45d..8ae259693900 100644 --- a/drivers/media/usb/dvb-usb/digitv.c +++ b/drivers/media/usb/dvb-usb/digitv.c @@ -231,13 +231,13 @@ static struct rc_map_table rc_map_digitv_table[] = { static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state) { int ret, i; - u8 key[5]; + u8 key[4]; u8 b[4] = { 0 }; *event = 0; *state = REMOTE_NO_KEY_PRESSED; - ret = digitv_ctrl_msg(d, USB_READ_REMOTE, 0, NULL, 0, &key[1], 4); + ret = digitv_ctrl_msg(d, USB_READ_REMOTE, 0, NULL, 0, key, 4); if (ret) return ret; @@ -248,20 +248,20 @@ static int digitv_rc_query(struct dvb_usb_device *d, u32 *event, int *state) return ret; /* if something is inside the buffer, simulate key press */ - if (key[1] != 0) + if (key[0] != 0) { for (i = 0; i < d->props.rc.legacy.rc_map_size; i++) { - if (rc5_custom(&d->props.rc.legacy.rc_map_table[i]) == key[1] && - rc5_data(&d->props.rc.legacy.rc_map_table[i]) == key[2]) { + if (rc5_custom(&d->props.rc.legacy.rc_map_table[i]) == key[0] && + rc5_data(&d->props.rc.legacy.rc_map_table[i]) == key[1]) { *event = d->props.rc.legacy.rc_map_table[i].keycode; *state = REMOTE_KEY_PRESSED; return 0; } } + + deb_rc("key: %*ph\n", 4, key); } - if (key[0] != 0) - deb_rc("key: %*ph\n", 5, key); return 0; } -- 2.24.1
