slimbus: ngd: validate logical address assigned by remote (0e321f19) · Commits · 戴 / test

Validate logical address assigned by remote, in failure cases this value is all zeors. Signed-off-by:

drivers/slimbus/qcom-ngd-ctrl.c

+4 −0

Original line number	Diff line number	Diff line
		@@ -1004,6 +1004,7 @@ static int qcom_slim_ngd_get_laddr(struct slim_controller *ctrl,
		struct slim_eaddr ea, u8 laddr)
		{
		struct slim_val_inf msg = {0};
		u8 failed_ea[6] = {0, 0, 0, 0, 0, 0};
		struct slim_msg_txn txn;
		u8 wbuf[10] = {0};
		u8 rbuf[10] = {0};
		@@ -1034,6 +1035,9 @@ static int qcom_slim_ngd_get_laddr(struct slim_controller *ctrl,
		return ret;
		}

		if (!memcmp(rbuf, failed_ea, 6))
		return -ENXIO;

		*laddr = rbuf[6];

		return ret;