diff options
Diffstat (limited to 'drivers/nfc/st21nfca/i2c.c')
-rw-r--r-- | drivers/nfc/st21nfca/i2c.c | 34 |
1 files changed, 9 insertions, 25 deletions
diff --git a/drivers/nfc/st21nfca/i2c.c b/drivers/nfc/st21nfca/i2c.c index ff31939978ae..0ea756b77519 100644 --- a/drivers/nfc/st21nfca/i2c.c +++ b/drivers/nfc/st21nfca/i2c.c @@ -271,6 +271,7 @@ static int st21nfca_hci_i2c_write(void *phy_id, struct sk_buff *skb) static int get_frame_size(u8 *buf, int buflen) { int len = 0; + if (buf[len + 1] == ST21NFCA_SOF_EOF) return 0; @@ -311,6 +312,7 @@ static int check_crc(u8 *buf, int buflen) static int st21nfca_hci_i2c_repack(struct sk_buff *skb) { int i, j, r, size; + if (skb->len < 1 || (skb->len > 1 && skb->data[1] != 0)) return -EBADMSG; @@ -525,24 +527,19 @@ static int st21nfca_hci_i2c_of_request_resources(struct i2c_client *client) } /* GPIO request and configuration */ - r = devm_gpio_request(&client->dev, gpio, "clf_enable"); + r = devm_gpio_request_one(&client->dev, gpio, GPIOF_OUT_INIT_HIGH, + "clf_enable"); if (r) { nfc_err(&client->dev, "Failed to request enable pin\n"); return -ENODEV; } - r = gpio_direction_output(gpio, 1); - if (r) { - nfc_err(&client->dev, "Failed to set enable pin direction as output\n"); - return -ENODEV; - } phy->gpio_ena = gpio; /* IRQ */ r = irq_of_parse_and_map(pp, 0); if (r < 0) { - nfc_err(&client->dev, - "Unable to get irq, error: %d\n", r); + nfc_err(&client->dev, "Unable to get irq, error: %d\n", r); return r; } @@ -576,32 +573,20 @@ static int st21nfca_hci_i2c_request_resources(struct i2c_client *client) phy->gpio_ena = pdata->gpio_ena; phy->irq_polarity = pdata->irq_polarity; - r = devm_gpio_request(&client->dev, phy->gpio_irq, "wake_up"); + r = devm_gpio_request_one(&client->dev, phy->gpio_irq, GPIOF_IN, + "wake_up"); if (r) { pr_err("%s : gpio_request failed\n", __FILE__); return -ENODEV; } - r = gpio_direction_input(phy->gpio_irq); - if (r) { - pr_err("%s : gpio_direction_input failed\n", __FILE__); - return -ENODEV; - } - if (phy->gpio_ena > 0) { - r = devm_gpio_request(&client->dev, - phy->gpio_ena, "clf_enable"); + r = devm_gpio_request_one(&client->dev, phy->gpio_ena, + GPIOF_OUT_INIT_HIGH, "clf_enable"); if (r) { pr_err("%s : ena gpio_request failed\n", __FILE__); return -ENODEV; } - r = gpio_direction_output(phy->gpio_ena, 1); - - if (r) { - pr_err("%s : ena gpio_direction_output failed\n", - __FILE__); - return -ENODEV; - } } /* IRQ */ @@ -711,7 +696,6 @@ static struct i2c_driver st21nfca_hci_i2c_driver = { .driver = { .owner = THIS_MODULE, .name = ST21NFCA_HCI_I2C_DRIVER_NAME, - .owner = THIS_MODULE, .of_match_table = of_match_ptr(of_st21nfca_i2c_match), }, .probe = st21nfca_hci_i2c_probe, |