evie/android_kernel_oneplus_msm8998
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icnss: Re-probe if driver probe returns error of defer

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If wlan driver probe returns error of defer, platform driver will
try to recover by calling probe again. The maximun probe count
is 2.

CRs-Fixed: 2124152
Change-Id: Ic973d0f1d76fc59ce5950397d42a9e778cacaa5a
Signed-off-by: Yuanyuan Liu <yuanliu@codeaurora.org>
This commit is contained in:
Yuanyuan Liu 2017-10-09 17:58:17 -07:00
parent 8ef07dcccc
commit 818cdc63ce
1 changed files with 21 additions and 8 deletions
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29
drivers/soc/qcom/icnss.c
View file

@ -73,6 +73,8 @@ module_param(qmi_timeout, ulong, 0600);
#define ICNSS_THRESHOLD_LOW 3450000
#define ICNSS_THRESHOLD_GUARD 20000
#define ICNSS_MAX_PROBE_CNT 2
#define icnss_ipc_log_string(_x...) do { \
if (icnss_ipc_log_context) \
ipc_log_string(icnss_ipc_log_context, _x); \
@ -2105,7 +2107,8 @@ static int icnss_driver_event_server_exit(void *data)
static int icnss_call_driver_probe(struct icnss_priv *priv)
{
int ret;
int ret = 0;
int probe_cnt = 0;
if (!priv->ops || !priv->ops->probe)
return 0;
@ -2117,10 +2120,15 @@ static int icnss_call_driver_probe(struct icnss_priv *priv)
icnss_hw_power_on(priv);
ret = priv->ops->probe(&priv->pdev->dev);
while (probe_cnt < ICNSS_MAX_PROBE_CNT) {
ret = priv->ops->probe(&priv->pdev->dev);
probe_cnt++;
if (ret != -EPROBE_DEFER)
break;
}
if (ret < 0) {
icnss_pr_err("Driver probe failed: %d, state: 0x%lx\n",
ret, priv->state);
icnss_pr_err("Driver probe failed: %d, state: 0x%lx, probe_cnt: %d\n",
ret, priv->state, probe_cnt);
goto out;
}
@ -2228,6 +2236,7 @@ out:
static int icnss_driver_event_register_driver(void *data)
{
int ret = 0;
int probe_cnt = 0;
if (penv->ops)
return -EEXIST;
@ -2247,11 +2256,15 @@ static int icnss_driver_event_register_driver(void *data)
if (ret)
goto out;
ret = penv->ops->probe(&penv->pdev->dev);
while (probe_cnt < ICNSS_MAX_PROBE_CNT) {
ret = penv->ops->probe(&penv->pdev->dev);
probe_cnt++;
if (ret != -EPROBE_DEFER)
break;
}
if (ret) {
icnss_pr_err("Driver probe failed: %d, state: 0x%lx\n",
ret, penv->state);
icnss_pr_err("Driver probe failed: %d, state: 0x%lx, probe_cnt: %d\n",
ret, penv->state, probe_cnt);
goto power_off;
}