diff options
Diffstat (limited to 'drivers/media/dvb-frontends/dib9000.c')
| -rw-r--r-- | drivers/media/dvb-frontends/dib9000.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/drivers/media/dvb-frontends/dib9000.c b/drivers/media/dvb-frontends/dib9000.c index e540cfb13bac..f75dec443783 100644 --- a/drivers/media/dvb-frontends/dib9000.c +++ b/drivers/media/dvb-frontends/dib9000.c @@ -1040,13 +1040,18 @@ static int dib9000_risc_apb_access_write(struct dib9000_state *state, u32 addres if (address >= 1024 || !state->platform.risc.fw_is_running) return -EINVAL; + if (len > 18) + return -EINVAL; + /* dprintk( "APB access thru wr fw %d %x", address, attribute); */ - mb[0] = (unsigned short)address; - for (i = 0; i < len && i < 20; i += 2) - mb[1 + (i / 2)] = (b[i] << 8 | b[i + 1]); + mb[0] = (u16)address; + for (i = 0; i + 1 < len; i += 2) + mb[1 + i / 2] = b[i] << 8 | b[i + 1]; + if (len & 1) + mb[1 + len / 2] = b[len - 1] << 8; - dib9000_mbx_send_attr(state, OUT_MSG_BRIDGE_APB_W, mb, 1 + len / 2, attribute); + dib9000_mbx_send_attr(state, OUT_MSG_BRIDGE_APB_W, mb, (3 + len) / 2, attribute); return dib9000_mbx_get_message_attr(state, IN_MSG_END_BRIDGE_APB_RW, mb, &s, attribute) == 1 ? 0 : -EINVAL; } |