diff options
| author | Benjamin Larsson <benjamin@southpole.se> | 2015-03-15 19:57:51 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@osg.samsung.com> | 2015-04-02 21:52:36 -0300 |
| commit | 307e95c92257fe2602b457ab6df56d9ef9a7444e (patch) | |
| tree | 681da8047106f0083c2c5f187b0c54e5321edbb3 /drivers | |
| parent | ba6d6d8a06c323782badf8cbead6e4ec1c742235 (diff) | |
[media] mn88472: implement firmware parity check
Signed-off-by: Benjamin Larsson <benjamin@southpole.se>
Signed-off-by: Antti Palosaari <crope@iki.fi>
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/staging/media/mn88472/mn88472.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/staging/media/mn88472/mn88472.c b/drivers/staging/media/mn88472/mn88472.c index 6f0cac44d273..85ef4f694c8b 100644 --- a/drivers/staging/media/mn88472/mn88472.c +++ b/drivers/staging/media/mn88472/mn88472.c @@ -258,6 +258,7 @@ static int mn88472_init(struct dvb_frontend *fe) int ret, len, remaining; const struct firmware *fw = NULL; u8 *fw_file = MN88472_FIRMWARE; + unsigned int csum; dev_dbg(&client->dev, "\n"); @@ -303,6 +304,20 @@ static int mn88472_init(struct dvb_frontend *fe) } } + /* parity check of firmware */ + ret = regmap_read(dev->regmap[0], 0xf8, &csum); + if (ret) { + dev_err(&client->dev, + "parity reg read failed=%d\n", ret); + goto err; + } + if (csum & 0x10) { + dev_err(&client->dev, + "firmware parity check failed=0x%x\n", csum); + goto err; + } + dev_err(&client->dev, "firmware parity check succeeded=0x%x\n", csum); + ret = regmap_write(dev->regmap[0], 0xf5, 0x00); if (ret) goto firmware_release; |