diff options
| author | Desnes Nunes <desnesn@redhat.com> | 2024-09-19 14:27:55 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2025-01-08 14:57:01 +0000 |
| commit | c36b9ad1a8add3c114e25fe167efa217a813b0c7 (patch) | |
| tree | e564bcce971052df9cdb6a6ec4a3052400072419 | |
| parent | 94794b5ce4d90ab134b0b101a02fddf6e74c437d (diff) | |
media: dvb-usb-v2: af9035: fix ISO C90 compilation error on af9035_i2c_master_xfer
This fixes a 'ISO C90 forbids mixed declarations and code' compilation
error on af9035_i2c_master_xfer, which is caused by the sanity check added
on user controlled msg[i], before declaring the demodulator register.
Fixes: 7bf744f2de0a ("media: dvb-usb-v2: af9035: Fix null-ptr-deref in af9035_i2c_master_xfer")
Signed-off-by: Desnes Nunes <desnesn@redhat.com>
Link: https://lore.kernel.org/r/20240919172755.196907-1-desnesn@redhat.com
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
| -rw-r--r-- | drivers/media/usb/dvb-usb-v2/af9035.c | 18 |
1 files changed, 12 insertions, 6 deletions
diff --git a/drivers/media/usb/dvb-usb-v2/af9035.c b/drivers/media/usb/dvb-usb-v2/af9035.c index 0d2c42819d390..218f712f56b17 100644 --- a/drivers/media/usb/dvb-usb-v2/af9035.c +++ b/drivers/media/usb/dvb-usb-v2/af9035.c @@ -322,13 +322,16 @@ static int af9035_i2c_master_xfer(struct i2c_adapter *adap, ret = -EOPNOTSUPP; } else if ((msg[0].addr == state->af9033_i2c_addr[0]) || (msg[0].addr == state->af9033_i2c_addr[1])) { + /* demod access via firmware interface */ + u32 reg; + if (msg[0].len < 3 || msg[1].len < 1) { ret = -EOPNOTSUPP; goto unlock; } - /* demod access via firmware interface */ - u32 reg = msg[0].buf[0] << 16 | msg[0].buf[1] << 8 | - msg[0].buf[2]; + + reg = msg[0].buf[0] << 16 | msg[0].buf[1] << 8 | + msg[0].buf[2]; if (msg[0].addr == state->af9033_i2c_addr[1]) reg |= 0x100000; @@ -385,13 +388,16 @@ static int af9035_i2c_master_xfer(struct i2c_adapter *adap, ret = -EOPNOTSUPP; } else if ((msg[0].addr == state->af9033_i2c_addr[0]) || (msg[0].addr == state->af9033_i2c_addr[1])) { + /* demod access via firmware interface */ + u32 reg; + if (msg[0].len < 3) { ret = -EOPNOTSUPP; goto unlock; } - /* demod access via firmware interface */ - u32 reg = msg[0].buf[0] << 16 | msg[0].buf[1] << 8 | - msg[0].buf[2]; + + reg = msg[0].buf[0] << 16 | msg[0].buf[1] << 8 | + msg[0].buf[2]; if (msg[0].addr == state->af9033_i2c_addr[1]) reg |= 0x100000; |