| Message ID | 20180628130729.17589-3-linus.walleij@linaro.org |
|---|---|
| State | New |
| Headers | show |
| Series | [1/9,v2] crypto: atmel-ecc: Make available for other platforms | expand |
Hi, Linus, On 06/28/2018 04:07 PM, Linus Walleij wrote: > Report errors once when they happen on the I2C bus so we > get good information in cases such as when the wrong I2C > address is used. > > Signed-off-by: Linus Walleij <linus.walleij@linaro.org> > --- > ChangeLog v1->v2: > - Strip some comments that are now obvious from the context > with the error messages. > - Do not print the excess ECC error message, atmel_ecc_status() > already prints error messages. > --- > drivers/crypto/atmel-ecc.c | 24 ++++++++++++++++-------- > 1 file changed, 16 insertions(+), 8 deletions(-) > > diff --git a/drivers/crypto/atmel-ecc.c b/drivers/crypto/atmel-ecc.c > index 33773920e4bf..baef0d07164d 100644 > --- a/drivers/crypto/atmel-ecc.c > +++ b/drivers/crypto/atmel-ecc.c > @@ -310,26 +310,31 @@ static int atmel_ecc_send_receive(struct i2c_client *client, > mutex_lock(&i2c_priv->lock); > > ret = atmel_ecc_wakeup(client); > - if (ret) > + if (ret) { > + dev_err(&client->dev, "wakeup failed\n"); > goto err; > + } > > - /* send the command */ > ret = i2c_master_send(client, (u8 *)cmd, cmd->count + WORD_ADDR_SIZE); > - if (ret < 0) > + if (ret < 0) { > + dev_err(&client->dev, "command send failed\n"); > goto err; > + } > > /* delay the appropriate amount of time for command to execute */ > msleep(cmd->msecs); > > - /* receive the response */ > ret = i2c_master_recv(client, cmd->data, cmd->rxsize); > - if (ret < 0) > + if (ret < 0) { > + dev_err(&client->dev, "getting response failed\n"); > goto err; > + } > > - /* put the device into low-power mode */ > ret = atmel_ecc_sleep(client); > - if (ret < 0) > + if (ret < 0) { > + dev_err(&client->dev, "putting to sleep failed\n"); > goto err; > + } > > mutex_unlock(&i2c_priv->lock); > return atmel_ecc_status(&client->dev, cmd->data); > @@ -624,8 +629,11 @@ static int device_sanity_check(struct i2c_client *client) > atmel_ecc_init_read_cmd(cmd); > > ret = atmel_ecc_send_receive(client, cmd); > - if (ret) > + if (ret) { > + dev_err(&client->dev, If you want to have two errors reported, one related to i2c and the other to crypto, I propose to be consistent and add an error message for the other call to atmel_ecc_send_receive() in atmel_ecdh_set_secret(). > + "failed to send ECC init command\n"); This line fits well in the previous. I would remove "ECC" from it, looks a bit redundant: atmel-ecc 2-0058: failed to send ECC init command Thanks! ta > goto free_cmd; > + } > > /* > * It is vital that the Configuration, Data and OTP zones be locked >
diff --git a/drivers/crypto/atmel-ecc.c b/drivers/crypto/atmel-ecc.c index 33773920e4bf..baef0d07164d 100644 --- a/drivers/crypto/atmel-ecc.c +++ b/drivers/crypto/atmel-ecc.c @@ -310,26 +310,31 @@ static int atmel_ecc_send_receive(struct i2c_client *client, mutex_lock(&i2c_priv->lock); ret = atmel_ecc_wakeup(client); - if (ret) + if (ret) { + dev_err(&client->dev, "wakeup failed\n"); goto err; + } - /* send the command */ ret = i2c_master_send(client, (u8 *)cmd, cmd->count + WORD_ADDR_SIZE); - if (ret < 0) + if (ret < 0) { + dev_err(&client->dev, "command send failed\n"); goto err; + } /* delay the appropriate amount of time for command to execute */ msleep(cmd->msecs); - /* receive the response */ ret = i2c_master_recv(client, cmd->data, cmd->rxsize); - if (ret < 0) + if (ret < 0) { + dev_err(&client->dev, "getting response failed\n"); goto err; + } - /* put the device into low-power mode */ ret = atmel_ecc_sleep(client); - if (ret < 0) + if (ret < 0) { + dev_err(&client->dev, "putting to sleep failed\n"); goto err; + } mutex_unlock(&i2c_priv->lock); return atmel_ecc_status(&client->dev, cmd->data); @@ -624,8 +629,11 @@ static int device_sanity_check(struct i2c_client *client) atmel_ecc_init_read_cmd(cmd); ret = atmel_ecc_send_receive(client, cmd); - if (ret) + if (ret) { + dev_err(&client->dev, + "failed to send ECC init command\n"); goto free_cmd; + } /* * It is vital that the Configuration, Data and OTP zones be locked
Report errors once when they happen on the I2C bus so we get good information in cases such as when the wrong I2C address is used. Signed-off-by: Linus Walleij <linus.walleij@linaro.org> --- ChangeLog v1->v2: - Strip some comments that are now obvious from the context with the error messages. - Do not print the excess ECC error message, atmel_ecc_status() already prints error messages. --- drivers/crypto/atmel-ecc.c | 24 ++++++++++++++++-------- 1 file changed, 16 insertions(+), 8 deletions(-) -- 2.17.0