The variable max_size's type is unsigned char,can not catch error number, change it to signed int. Signed-off-by: wangbo <wang.bo116@xxxxxxxxxx> --- drivers/nfc/fdp/fdp.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/drivers/nfc/fdp/fdp.c b/drivers/nfc/fdp/fdp.c index d5784a4..ba32a59 100644 --- a/drivers/nfc/fdp/fdp.c +++ b/drivers/nfc/fdp/fdp.c @@ -192,8 +192,9 @@ static int fdp_nci_send_patch(struct nci_dev *ndev, u8 conn_id, u8 type) const struct firmware *fw; struct sk_buff *skb; unsigned long len; - u8 max_size, payload_size; + u8 payload_size; int rc = 0; + int max_size = 0; if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) || (type == NCI_PATCH_TYPE_RAM && !info->ram_patch)) -- 2.7.4