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authorChristophe Ricard <christophe.ricard@gmail.com>2014-07-28 20:11:37 +0400
committerSamuel Ortiz <sameo@linux.intel.com>2014-09-08 01:56:49 +0400
commit9ec1f58b9a8ecd72e675c33bfe8ceaf1bc0dc4c5 (patch)
tree2fb9ecdaf32008e74d08aabf5d5563cf78d8ad4f /drivers/nfc
parentdf2566fe37d92dfba032e6084ebfb708dac5dc9a (diff)
downloadlinux-9ec1f58b9a8ecd72e675c33bfe8ceaf1bc0dc4c5.tar.xz
NFC: st21nfca: Fix logic when setting session_id
If dev_num >= ST21NFCA_NUM_DEVICES, the driver was returning an incorrect success return code. Once dev_num is set, it was not stated as busy. Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
-rw-r--r--drivers/nfc/st21nfca/st21nfca.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/nfc/st21nfca/st21nfca.c b/drivers/nfc/st21nfca/st21nfca.c
index b6ad8c902f8d..438e06e6eb6a 100644
--- a/drivers/nfc/st21nfca/st21nfca.c
+++ b/drivers/nfc/st21nfca/st21nfca.c
@@ -905,8 +905,11 @@ int st21nfca_hci_probe(void *phy_id, struct nfc_phy_ops *phy_ops,
* persistent info to discriminate 2 identical chips
*/
dev_num = find_first_zero_bit(dev_mask, ST21NFCA_NUM_DEVICES);
+
if (dev_num >= ST21NFCA_NUM_DEVICES)
- goto err_alloc_hdev;
+ return -ENODEV;
+
+ set_bit(dev_num, dev_mask);
scnprintf(init_data.session_id, sizeof(init_data.session_id), "%s%2x",
"ST21AH", dev_num);