diff options
| author | Dan Carpenter <dan.carpenter@oracle.com> | 2020-03-20 16:21:17 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-04-02 15:28:12 +0200 |
| commit | b9ac81058b6c2e9e88be027931c517d816762008 (patch) | |
| tree | 4ed489c261e32b3b6722de2e2a671b51f01f9a9b /drivers/nfc | |
| parent | 47e36be14674184cb2bc5562e3c9f156f0c27493 (diff) | |
NFC: fdp: Fix a signedness bug in fdp_nci_send_patch()
[ Upstream commit 0dcdf9f64028ec3b75db6b691560f8286f3898bf ]
The nci_conn_max_data_pkt_payload_size() function sometimes returns
-EPROTO so "max_size" needs to be signed for the error handling to
work. We can make "payload_size" an int as well.
Fixes: a06347c04c13 ("NFC: Add Intel Fields Peak NFC solution driver")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/fdp/fdp.c | 5 |
1 files changed, 2 insertions, 3 deletions
diff --git a/drivers/nfc/fdp/fdp.c b/drivers/nfc/fdp/fdp.c index d5784a47fc13..954c83e917eb 100644 --- a/drivers/nfc/fdp/fdp.c +++ b/drivers/nfc/fdp/fdp.c @@ -192,7 +192,7 @@ 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 max_size, payload_size; int rc = 0; if ((type == NCI_PATCH_TYPE_OTP && !info->otp_patch) || @@ -215,8 +215,7 @@ static int fdp_nci_send_patch(struct nci_dev *ndev, u8 conn_id, u8 type) while (len) { - payload_size = min_t(unsigned long, (unsigned long) max_size, - len); + payload_size = min_t(unsigned long, max_size, len); skb = nci_skb_alloc(ndev, (NCI_CTRL_HDR_SIZE + payload_size), GFP_KERNEL); |