NFC: st21nfca: Fix host_list verification after SEactivation
A secure element can be activated in different order.
The host_list is updated keeping a fixed order:
<terminal_host_id><uicc_id><ese_id>.
Cc: stable@vger.kernel.org
Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
diff --git a/drivers/nfc/st21nfca/se.c b/drivers/nfc/st21nfca/se.c
index 6aa4e34..8e05d73 100644
--- a/drivers/nfc/st21nfca/se.c
+++ b/drivers/nfc/st21nfca/se.c
@@ -100,7 +100,7 @@
u8 state)
{
struct st21nfca_hci_info *info = nfc_hci_get_clientdata(hdev);
- int r;
+ int r, i;
struct sk_buff *sk_host_list;
u8 se_event, host_id;
@@ -148,7 +148,10 @@
if (r < 0)
return r;
- host_id = sk_host_list->data[sk_host_list->len - 1];
+ for (i = 0; i < sk_host_list->len &&
+ sk_host_list->data[i] != se_idx; i++)
+ ;
+ host_id = sk_host_list->data[i];
kfree_skb(sk_host_list);
if (state == ST21NFCA_SE_MODE_ON && host_id == se_idx)