diff options
| author | Hans Verkuil <hans.verkuil@cisco.com> | 2014-12-13 08:52:56 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2014-12-23 10:42:51 -0200 |
| commit | 50fd5e8c1e02ac471a0a4f3aaa87684a5152a0b4 (patch) | |
| tree | e6fc93587a6e5ebdaadc3b8c9915f6512ddbdb96 /drivers/media/dvb-frontends/hd29l2.c | |
| parent | 7c424dd14fcf4c2905778ecd3f1ad10c5a097b5b (diff) | |
[media] hd29l2: fix sparse error and warnings
drivers/media/dvb-frontends/hd29l2.c:29:18: warning: Variable length array is used.
drivers/media/dvb-frontends/hd29l2.c:34:32: error: cannot size expression
drivers/media/dvb-frontends/hd29l2.c:125:5: warning: symbol 'hd29l2_rd_reg_mask' was not declared. Should it be static?
Variable length arrays are frowned upon, so replace with a fixed length and check
that there won't be a buffer overrun.
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Reviewed-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers/media/dvb-frontends/hd29l2.c')
| -rw-r--r-- | drivers/media/dvb-frontends/hd29l2.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/media/dvb-frontends/hd29l2.c b/drivers/media/dvb-frontends/hd29l2.c index d7b9d549156d..67c8e6df42e8 100644 --- a/drivers/media/dvb-frontends/hd29l2.c +++ b/drivers/media/dvb-frontends/hd29l2.c @@ -22,20 +22,24 @@ #include "hd29l2_priv.h" +#define HD29L2_MAX_LEN (3) + /* write multiple registers */ static int hd29l2_wr_regs(struct hd29l2_priv *priv, u8 reg, u8 *val, int len) { int ret; - u8 buf[2 + len]; + u8 buf[2 + HD29L2_MAX_LEN]; struct i2c_msg msg[1] = { { .addr = priv->cfg.i2c_addr, .flags = 0, - .len = sizeof(buf), + .len = 2 + len, .buf = buf, } }; + if (len > HD29L2_MAX_LEN) + return -EINVAL; buf[0] = 0x00; buf[1] = reg; memcpy(&buf[2], val, len); @@ -118,7 +122,7 @@ static int hd29l2_wr_reg_mask(struct hd29l2_priv *priv, u8 reg, u8 val, u8 mask) } /* read single register with mask */ -int hd29l2_rd_reg_mask(struct hd29l2_priv *priv, u8 reg, u8 *val, u8 mask) +static int hd29l2_rd_reg_mask(struct hd29l2_priv *priv, u8 reg, u8 *val, u8 mask) { int ret, i; u8 tmp; |