diff options
| author | Brad Love <brad@nextdimension.cc> | 2019-11-14 21:03:56 +0100 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab+huawei@kernel.org> | 2020-04-21 16:44:58 +0200 |
| commit | 5741f4affb694653c2cec3d75aa4dd56cae2175b (patch) | |
| tree | 9e5a60c510b43e77c917087236a70ec1478ed211 /drivers/media/tuners | |
| parent | 5714e84fee5068c1829e2f6ab94fc40b0bb34eb5 (diff) | |
| download | linux-5741f4affb694653c2cec3d75aa4dd56cae2175b.tar.bz2 | |
media: si2157: Check error status bit on cmd execute
Check error status bit on command execute, if error bit is
set return -EAGAIN. Ignore -EAGAIN in probe during device check.
Signed-off-by: Brad Love <brad@nextdimension.cc>
Signed-off-by: Sean Young <sean@mess.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab+huawei@kernel.org>
Diffstat (limited to 'drivers/media/tuners')
| -rw-r--r-- | drivers/media/tuners/si2157.c | 16 |
1 files changed, 11 insertions, 5 deletions
diff --git a/drivers/media/tuners/si2157.c b/drivers/media/tuners/si2157.c index 12f88304ac0f..69c625eaee25 100644 --- a/drivers/media/tuners/si2157.c +++ b/drivers/media/tuners/si2157.c @@ -47,14 +47,20 @@ static int si2157_cmd_execute(struct i2c_client *client, struct si2157_cmd *cmd) break; } - dev_dbg(&client->dev, "cmd execution took %d ms\n", - jiffies_to_msecs(jiffies) - - (jiffies_to_msecs(timeout) - TIMEOUT)); + dev_dbg(&client->dev, "cmd execution took %d ms, status=%x\n", + jiffies_to_msecs(jiffies) - + (jiffies_to_msecs(timeout) - TIMEOUT), + cmd->args[0]); if (!((cmd->args[0] >> 7) & 0x01)) { ret = -ETIMEDOUT; goto err_mutex_unlock; } + /* check error status bit */ + if (cmd->args[0] & 0x40) { + ret = -EAGAIN; + goto err_mutex_unlock; + } } mutex_unlock(&dev->i2c_mutex); @@ -106,7 +112,7 @@ static int si2157_init(struct dvb_frontend *fe) } cmd.rlen = 1; ret = si2157_cmd_execute(client, &cmd); - if (ret) + if (ret && (dev->chiptype != SI2157_CHIPTYPE_SI2141 || ret != -EAGAIN)) goto err; /* Si2141 needs a second command before it answers the revision query */ @@ -478,7 +484,7 @@ static int si2157_probe(struct i2c_client *client, cmd.wlen = 0; cmd.rlen = 1; ret = si2157_cmd_execute(client, &cmd); - if (ret) + if (ret && ret != -EAGAIN) goto err_kfree; memcpy(&fe->ops.tuner_ops, &si2157_ops, sizeof(struct dvb_tuner_ops)); |