diff options
| author | Al Viro <viro@zeniv.linux.org.uk> | 2017-04-17 00:42:22 +0200 |
|---|---|---|
| committer | Samuel Ortiz <sameo@linux.intel.com> | 2017-04-17 00:42:22 +0200 |
| commit | 4ea206395d3aede32bab94a75ec573530486fa44 (patch) | |
| tree | 69c9d431bb02be210886f673c6fe467327cc156c /drivers/nfc | |
| parent | NFC: pn533: use constant off-stack buffer for sending acks (diff) | |
| download | linux-4ea206395d3aede32bab94a75ec573530486fa44.tar.xz linux-4ea206395d3aede32bab94a75ec573530486fa44.zip | |
nfc: fix get_unaligned_...() misuses
* if a local variable of type uint16_t is unaligned, your compiler is FUBAR
* the whole point of get_unaligned_... is to avoid memcpy + ..._to_cpu().
Using it *after* memcpy() (into aligned object, no less) is pointless.
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'drivers/nfc')
| -rw-r--r-- | drivers/nfc/nfcmrvl/fw_dnld.c | 5 | ||||
| -rw-r--r-- | drivers/nfc/nxp-nci/i2c.c | 2 |
2 files changed, 3 insertions, 4 deletions
diff --git a/drivers/nfc/nfcmrvl/fw_dnld.c b/drivers/nfc/nfcmrvl/fw_dnld.c index 441c1b0ec7b5..c38bdd6a5a82 100644 --- a/drivers/nfc/nfcmrvl/fw_dnld.c +++ b/drivers/nfc/nfcmrvl/fw_dnld.c @@ -281,12 +281,11 @@ static int process_state_fw_dnld(struct nfcmrvl_private *priv, return -EINVAL; } skb_pull(skb, 1); - memcpy(&len, skb->data, 2); + len = get_unaligned_le16(skb->data); skb_pull(skb, 2); + comp_len = get_unaligned_le16(skb->data); memcpy(&comp_len, skb->data, 2); skb_pull(skb, 2); - len = get_unaligned_le16(&len); - comp_len = get_unaligned_le16(&comp_len); if (((~len) & 0xFFFF) != comp_len) { nfc_err(priv->dev, "bad len complement: %x %x %x", len, comp_len, (~len & 0xFFFF)); diff --git a/drivers/nfc/nxp-nci/i2c.c b/drivers/nfc/nxp-nci/i2c.c index c6a04a950225..ff22d761183c 100644 --- a/drivers/nfc/nxp-nci/i2c.c +++ b/drivers/nfc/nxp-nci/i2c.c @@ -126,7 +126,7 @@ static int nxp_nci_i2c_fw_read(struct nxp_nci_i2c_phy *phy, goto fw_read_exit; } - frame_len = (get_unaligned_be16(&header) & NXP_NCI_FW_FRAME_LEN_MASK) + + frame_len = (be16_to_cpu(header) & NXP_NCI_FW_FRAME_LEN_MASK) + NXP_NCI_FW_CRC_LEN; *skb = alloc_skb(NXP_NCI_FW_HDR_LEN + frame_len, GFP_KERNEL); |