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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>
This commit is contained in:
Al Viro 2017-04-17 00:42:22 +02:00 committed by Samuel Ortiz
parent 8b55d7581f
commit 4ea206395d
2 changed files with 3 additions and 4 deletions
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5
drivers/nfc/nfcmrvl/fw_dnld.c
View File

@ -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));

2
drivers/nfc/nxp-nci/i2c.c
View File

@ -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);