From: Colin Ian King <colin.king@xxxxxxxxxxxxx>
The u8 variable max_size is being assigned a return value from the
call to nci_conn_max_data_pkt_payload_size that can return a -ve
error return. Since max_size is a u8, the -ve check for the error will
always be false. Fix this by making max_size an int type.
Detected using Coccinelle:
drivers/nfc/fdp/fdp.c:208:5-13: WARNING: Unsigned expression compared
with zero: max_size <= 0
Fixes: a06347c04c13 ("NFC: Add Intel Fields Peak NFC solution driver")
Signed-off-by: Colin Ian King <colin.king@xxxxxxxxxxxxx>
---
drivers/nfc/fdp/fdp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/nfc/fdp/fdp.c b/drivers/nfc/fdp/fdp.c
index d5784a47fc13..5ddc01b4913a 100644
--- a/drivers/nfc/fdp/fdp.c
+++ b/drivers/nfc/fdp/fdp.c
@@ -192,8 +192,8 @@ 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;
- int rc = 0;
+ u8 payload_size;
+ int max_size, rc = 0;
if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) ||
(type == NCI_PATCH_TYPE_RAM && !info->ram_patch))
--
2.15.1
