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icnss2: Avoid race between SOC wake requests

Browse source 
Add check for ref count inside work that if SOC wake
request is already sent, increment ref count and return
without actually sending request to FW.

Change-Id: Ia70e1699001c885b2a76b173ca1106f5555d55ea
Signed-off-by: Naman Padhiar <npadhiar@codeaurora.org>
This commit is contained in:
Naman Padhiar 2021-05-24 19:04:44 +05:30 • committed by Gerrit - the friendly Code Review server
commit dbb6f25a6d
1 changed files with 7 additions and 0 deletions
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7
drivers/soc/qcom/icnss2/main.c
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@ -850,6 +850,7 @@ static int icnss_driver_event_fw_ready_ind(struct icnss_priv *priv, void *data)
set_bit(ICNSS_FW_READY, &priv->state);
clear_bit(ICNSS_MODE_ON, &priv->state);
atomic_set(&priv->soc_wake_ref_count, 0);
if (priv->device_id == WCN6750_DEVICE_ID)
icnss_free_qdss_mem(priv);
@ -1091,6 +1092,12 @@ static int icnss_event_soc_wake_request(struct icnss_priv *priv, void *data)
if (!priv)
return -ENODEV;
if (atomic_inc_not_zero(&priv->soc_wake_ref_count)) {
icnss_pr_dbg("SOC awake after posting work, Ref count: %d",
atomic_read(&priv->soc_wake_ref_count));
return 0;
}
ret = wlfw_send_soc_wake_msg(priv, QMI_WLFW_WAKE_REQUEST_V01);
if (!ret)
atomic_inc(&priv->soc_wake_ref_count);