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nfc: s3fwrn5: replace the assertion with a WARN_ON 

In s3fwrn5_fw_recv_frame, if fw_info->rsp is not empty, the
current code causes a crash via BUG_ON. However, s3fwrn5_fw_send_msg
does not crash in such a scenario. The patch replaces the BUG_ON
by returning the error to the callers and frees up skb.

Signed-off-by: Aditya Pakki <pakki001@umn.edu>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Aditya Pakki 2019-12-17 14:43:00 -06:00 committed by David S. Miller
parent a019739c1c
commit 615f22f580
1 changed files with 4 additions and 1 deletions
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5
drivers/nfc/s3fwrn5/firmware.c
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@ -507,7 +507,10 @@ int s3fwrn5_fw_recv_frame(struct nci_dev *ndev, struct sk_buff *skb)
struct s3fwrn5_info *info = nci_get_drvdata(ndev);
struct s3fwrn5_fw_info *fw_info = &info->fw_info;
BUG_ON(fw_info->rsp);
if (WARN_ON(fw_info->rsp)) {
kfree_skb(skb);
return -EINVAL;
}
fw_info->rsp = skb;