The 2nd parameter of skb_trim is the new length of the skb. pn544_hci_i2c_remove_len_crc used the tailroom for the 2nd parameter so the new length was 2 no metter how big the skb was. Now the length is (skb->len - PN544_I2C_FRAME_TAILROOM) Signed-off-by: Robert Dolca <robert.dolca@xxxxxxxxx> --- drivers/nfc/pn544/i2c.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/drivers/nfc/pn544/i2c.c b/drivers/nfc/pn544/i2c.c index 58b9029..42e7b26 100644 --- a/drivers/nfc/pn544/i2c.c +++ b/drivers/nfc/pn544/i2c.c @@ -297,7 +297,7 @@ static void pn544_hci_i2c_add_len_crc(struct sk_buff *skb) static void pn544_hci_i2c_remove_len_crc(struct sk_buff *skb) { skb_pull(skb, PN544_I2C_FRAME_HEADROOM); - skb_trim(skb, PN544_I2C_FRAME_TAILROOM); + skb_trim(skb, skb->len - PN544_I2C_FRAME_TAILROOM); } /* @@ -411,8 +411,7 @@ static int pn544_hci_i2c_read(struct pn544_i2c_phy *phy, struct sk_buff **skb) goto flush; } - skb_pull(*skb, 1); - skb_trim(*skb, (*skb)->len - 2); + pn544_hci_i2c_remove_len_crc(*skb); usleep_range(3000, 6000); -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-wireless" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html