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Commit 7f9f1713 authored by Mark Greer's avatar Mark Greer Committed by Samuel Ortiz
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NFC: digital: NFC-A SEL_RES must be one byte 



Section 4.8.2 (SEL_RES Response) of NFC Forum's NFC Digital Protocol
Technical Specification dated 2010-11-17 clearly states that the size
of a SEL_RES Response is one byte.  Enforce this restriction in the
code.

Signed-off-by: default avatarMark Greer <mgreer@animalcreek.com>
Signed-off-by: default avatarSamuel Ortiz <sameo@linux.intel.com>
parent dcfca27f

net/nfc/digital_technology.c

+2 −1
Original line number Diff line number Diff line
@@ -27,6 +27,7 @@ 


#define DIGITAL_SDD_RES_CT  0x88

#define DIGITAL_SDD_RES_LEN 5

#define DIGITAL_SEL_RES_LEN 1



#define DIGITAL_SEL_RES_NFCID1_COMPLETE(sel_res) (!((sel_res) & 0x04))

#define DIGITAL_SEL_RES_IS_T2T(sel_res) (!((sel_res) & 0x60))
@@ -299,7 +300,7 @@ static void digital_in_recv_sel_res(struct nfc_digital_dev *ddev, void *arg, 
		}

	}



	if (!resp->len) {

	if (resp->len != DIGITAL_SEL_RES_LEN) {

		rc = -EIO;

		goto exit;

	}