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tty: n_smux: Add flow control state to overflow message

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To aid in debugging, print the state of receive flow control if an
overflow condition occurs.

Change-Id: Ic425d8c3f58e22a99b746bc184a8bb62677a944e
Signed-off-by: Eric Holmberg <eholmber@codeaurora.org>
This commit is contained in:
Eric Holmberg
2012-08-21 16:28:12 -06:00
committed by Stephen Boyd
parent 063b80ae6d
commit ff8cfd9815
1 changed files with 8 additions and 2 deletions
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10
drivers/tty/n_smux.c
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@@ -84,6 +84,11 @@ module_param_named(simulate_wakeup_delay, smux_simulate_wakeup_delay,
IPC_LOG_STR(x); \
} while (0)
#define SMUX_ERR(x...) do { \
pr_err(x); \
IPC_LOG_STR(x); \
} while (0)
#define SMUX_PWR(x...) do { \
if (smux_debug_mask & MSM_SMUX_POWER_INFO) \
IPC_LOG_STR(x); \
@@ -1489,8 +1494,9 @@ static int smux_handle_rx_data_cmd(struct smux_pkt_t *pkt)
}
if ((ch->rx_retry_queue_cnt + 1) > SMUX_RX_RETRY_MAX_PKTS) {
/* retry queue full */
pr_err("%s: ch %d RX retry queue full\n",
__func__, lcid);
SMUX_ERR(
"%s: ch %d RX retry queue full; rx flow=%d\n",
__func__, lcid, ch->rx_flow_control_auto);
schedule_notify(lcid, SMUX_READ_FAIL, NULL);
ret = -ENOMEM;
spin_unlock_irqrestore(&ch->state_lock_lhb1, flags);