linux-stable/net/nfc/hci/Kconfig
Marcel Holtmann f3a138c10b NFC: Select CRC_CCITT for SHDLC link layer of HCI based drivers
The SHDLC link layer of HCI based drivers uses CRC-CCITT and thus
needs to select that kernel option.

Otherwise it ends up with this linking error:

net/built-in.o: In function `nfc_shdlc_add_len_crc':
net/nfc/hci/shdlc.c:113: undefined reference to `crc_ccitt'

Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Signed-off-by: John W. Linville <linville@tuxdriver.com>
2012-05-15 17:27:28 -04:00

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config NFC_HCI
depends on NFC
tristate "NFC HCI implementation"
default n
help
Say Y here if you want to build support for a kernel NFC HCI
implementation. This is mostly needed for devices that only process
HCI frames, like for example the NXP pn544.
config NFC_SHDLC
depends on NFC_HCI
select CRC_CCITT
bool "SHDLC link layer for HCI based NFC drivers"
default n
---help---
Say yes if you use an NFC HCI driver that requires SHDLC link layer.
If unsure, say N here.