diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-07-07 08:07:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-07 08:07:35 +0200 |
| commit | d763d5edf945eec47bd443b699f174976f0afc13 (patch) | |
| tree | 3e5cd46b9a783999716bf92176854f4f1215d930 /drivers/media/dvb/frontends/tda1004x.c | |
| parent | 790e2a290b499b0400254e6870ec27969065d122 (diff) | |
| parent | 1b40a895df6c7d5a80e71f65674060b03d84bbef (diff) | |
Merge branch 'linus' into tracing/mmiotrace
Diffstat (limited to 'drivers/media/dvb/frontends/tda1004x.c')
| -rw-r--r-- | drivers/media/dvb/frontends/tda1004x.c | 29 |
1 files changed, 25 insertions, 4 deletions
diff --git a/drivers/media/dvb/frontends/tda1004x.c b/drivers/media/dvb/frontends/tda1004x.c index 49973846373..a0d63865356 100644 --- a/drivers/media/dvb/frontends/tda1004x.c +++ b/drivers/media/dvb/frontends/tda1004x.c @@ -1248,11 +1248,14 @@ struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config, struct i2c_adapter* i2c) { struct tda1004x_state *state; + int id; /* allocate memory for the internal state */ state = kmalloc(sizeof(struct tda1004x_state), GFP_KERNEL); - if (!state) + if (!state) { + printk(KERN_ERR "Can't alocate memory for tda10045 state\n"); return NULL; + } /* setup the state */ state->config = config; @@ -1260,7 +1263,15 @@ struct dvb_frontend* tda10045_attach(const struct tda1004x_config* config, state->demod_type = TDA1004X_DEMOD_TDA10045; /* check if the demod is there */ - if (tda1004x_read_byte(state, TDA1004X_CHIPID) != 0x25) { + id = tda1004x_read_byte(state, TDA1004X_CHIPID); + if (id < 0) { + printk(KERN_ERR "tda10045: chip is not answering. Giving up.\n"); + kfree(state); + return NULL; + } + + if (id != 0x25) { + printk(KERN_ERR "Invalid tda1004x ID = 0x%02x. Can't proceed\n", id); kfree(state); return NULL; } @@ -1307,11 +1318,14 @@ struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config, struct i2c_adapter* i2c) { struct tda1004x_state *state; + int id; /* allocate memory for the internal state */ state = kmalloc(sizeof(struct tda1004x_state), GFP_KERNEL); - if (!state) + if (!state) { + printk(KERN_ERR "Can't alocate memory for tda10046 state\n"); return NULL; + } /* setup the state */ state->config = config; @@ -1319,7 +1333,14 @@ struct dvb_frontend* tda10046_attach(const struct tda1004x_config* config, state->demod_type = TDA1004X_DEMOD_TDA10046; /* check if the demod is there */ - if (tda1004x_read_byte(state, TDA1004X_CHIPID) != 0x46) { + id = tda1004x_read_byte(state, TDA1004X_CHIPID); + if (id < 0) { + printk(KERN_ERR "tda10046: chip is not answering. Giving up.\n"); + kfree(state); + return NULL; + } + if (id != 0x46) { + printk(KERN_ERR "Invalid tda1004x ID = 0x%02x. Can't proceed\n", id); kfree(state); return NULL; } |