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Bluetooth: hci_check_conn_params() check proper range

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Slave latency range has been changed in Core Spec. 4.2 by Erratum 5419
of ESR08_V1.0.0. And it should be applied to Core Spec. 4.0 and 4.1.

Before:
   connSlaveLatency <= ((connSupervisionTimeout / connIntervalMax) - 1)

After:
   connSlaveLatency <= ((connSupervisionTimeout / (connIntervalMax*2)) - 1)

This patch makes hci_check_conn_params() check the allowable slave
latency range using the changed way.

Signed-off-by: Seungyoun Ju <sy39.ju@samsung.com>
Signed-off-by: Johan Hedberg <johan.hedberg@intel.com>
This commit is contained in:
Seungyoun Ju 2015-07-13 17:28:13 +09:00 committed by Marcel Holtmann
parent fc586c4111
commit 8757825b12
1 changed files with 1 additions and 1 deletions
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2
include/net/bluetooth/hci_core.h
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@ -1297,7 +1297,7 @@ static inline int hci_check_conn_params(u16 min, u16 max, u16 latency,
if (max >= to_multiplier * 8)
return -EINVAL;
max_latency = (to_multiplier * 8 / max) - 1;
max_latency = (to_multiplier * 4 / max) - 1;
if (latency > 499 || latency > max_latency)
return -EINVAL;