diff options
Diffstat (limited to 'drivers/media/usb/dvb-usb-v2/mxl111sf.c')
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/mxl111sf.c | 14 |
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/mxl111sf.c b/drivers/media/usb/dvb-usb-v2/mxl111sf.c index e97964ef7f56..08240e498451 100644 --- a/drivers/media/usb/dvb-usb-v2/mxl111sf.c +++ b/drivers/media/usb/dvb-usb-v2/mxl111sf.c @@ -23,6 +23,9 @@ #include "lgdt3305.h" #include "lg2160.h" +/* Max transfer size done by I2C transfer functions */ +#define MAX_XFER_SIZE 64 + int dvb_usb_mxl111sf_debug; module_param_named(debug, dvb_usb_mxl111sf_debug, int, 0644); MODULE_PARM_DESC(debug, "set debugging level " @@ -57,7 +60,12 @@ int mxl111sf_ctrl_msg(struct dvb_usb_device *d, { int wo = (rbuf == NULL || rlen == 0); /* write-only */ int ret; - u8 sndbuf[1+wlen]; + u8 sndbuf[MAX_XFER_SIZE]; + + if (1 + wlen > sizeof(sndbuf)) { + pr_warn("%s: len=%d is too big!\n", __func__, wlen); + return -EOPNOTSUPP; + } pr_debug("%s(wlen = %d, rlen = %d)\n", __func__, wlen, rlen); @@ -258,7 +266,7 @@ static int mxl111sf_adap_fe_init(struct dvb_frontend *fe) struct mxl111sf_adap_state *adap_state = &state->adap_state[fe->id]; int err; - /* exit if we didnt initialize the driver yet */ + /* exit if we didn't initialize the driver yet */ if (!state->chip_id) { mxl_debug("driver not yet initialized, exit."); goto fail; @@ -314,7 +322,7 @@ static int mxl111sf_adap_fe_sleep(struct dvb_frontend *fe) struct mxl111sf_adap_state *adap_state = &state->adap_state[fe->id]; int err; - /* exit if we didnt initialize the driver yet */ + /* exit if we didn't initialize the driver yet */ if (!state->chip_id) { mxl_debug("driver not yet initialized, exit."); goto fail; |