diff options
| author | Xi Wang <xi.wang@gmail.com> | 2012-02-14 14:32:41 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2012-04-02 09:27:18 -0700 |
| commit | 88a782d295e29051e1da10a097ff72b3918dbaa9 (patch) | |
| tree | e78a195800a8b3827917e86901640dacdca19f43 /drivers/media | |
| parent | 7d088dca7920bc7c5d74d6c430699abb63ec0151 (diff) | |
| download | kernel_samsung_smdk4412-88a782d295e29051e1da10a097ff72b3918dbaa9.zip kernel_samsung_smdk4412-88a782d295e29051e1da10a097ff72b3918dbaa9.tar.gz kernel_samsung_smdk4412-88a782d295e29051e1da10a097ff72b3918dbaa9.tar.bz2 | |
lgdt330x: fix signedness error in i2c_read_demod_bytes()
commit 34817174fca0c5512c2d5b6ea0fc37a0337ce1d8 upstream.
The error handling in lgdt3303_read_status() and lgdt330x_read_ucblocks()
doesn't work, because i2c_read_demod_bytes() returns a u8 and (err < 0)
is always false.
err = i2c_read_demod_bytes(state, 0x58, buf, 1);
if (err < 0)
return err;
Change the return type of i2c_read_demod_bytes() to int. Also change
the return value on error to -EIO to make (err < 0) work.
Signed-off-by: Xi Wang <xi.wang@gmail.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/media')
| -rw-r--r-- | drivers/media/dvb/frontends/lgdt330x.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/media/dvb/frontends/lgdt330x.c b/drivers/media/dvb/frontends/lgdt330x.c index 43971e6..aa63d68 100644 --- a/drivers/media/dvb/frontends/lgdt330x.c +++ b/drivers/media/dvb/frontends/lgdt330x.c @@ -104,8 +104,8 @@ static int i2c_write_demod_bytes (struct lgdt330x_state* state, * then reads the data returned for (len) bytes. */ -static u8 i2c_read_demod_bytes (struct lgdt330x_state* state, - enum I2C_REG reg, u8* buf, int len) +static int i2c_read_demod_bytes(struct lgdt330x_state *state, + enum I2C_REG reg, u8 *buf, int len) { u8 wr [] = { reg }; struct i2c_msg msg [] = { @@ -118,6 +118,8 @@ static u8 i2c_read_demod_bytes (struct lgdt330x_state* state, ret = i2c_transfer(state->i2c, msg, 2); if (ret != 2) { printk(KERN_WARNING "lgdt330x: %s: addr 0x%02x select 0x%02x error (ret == %i)\n", __func__, state->config->demod_address, reg, ret); + if (ret >= 0) + ret = -EIO; } else { ret = 0; } |