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qcacld-3.0: reset sta_connected to 0 during SSR to avoid fw crash

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qcacld-2.0 to qcacld-3.0 propagation

sta_connected flag check may fail when handle WLAN_STA_CONNECT event.
This will cause enable-ipa operation get skipped for the connect
operation. If a disconnect operation follows, it will invoke fw to
disable the ipa. Fw considers ipa to be disabled by default, so fw
will consider it be double-disable and trigger the crash.

Change-Id: Iaf4855eb1776e8c8c3b027d0ee2beb644063ef75
CRs-Fixed: 1079051
This commit is contained in:
Guolei Bian 2016-11-10 11:07:42 +08:00 • committed by qcabuildsw
commit ca144d8158
1 changed files with 24 additions and 0 deletions
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24
core/hdd/src/wlan_hdd_ipa.c
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@ -638,6 +638,27 @@ static inline bool hdd_ipa_uc_sta_is_enabled(hdd_context_t *hdd_ctx)
return HDD_IPA_IS_CONFIG_ENABLED(hdd_ctx, HDD_IPA_UC_STA_ENABLE_MASK);
}
/**
* hdd_ipa_uc_sta_reset_sta_connected() - Reset sta_connected flag
* @hdd_ipa: Global HDD IPA context
*
* Return: None
*/
#ifdef IPA_UC_STA_OFFLOAD
static inline void hdd_ipa_uc_sta_reset_sta_connected(
struct hdd_ipa_priv *hdd_ipa)
{
vos_lock_acquire(&hdd_ipa->event_lock);
hdd_ipa->sta_connected = 0;
vos_lock_release(&hdd_ipa->event_lock);
}
#else
static inline void hdd_ipa_uc_sta_reset_sta_connected(
struct hdd_ipa_priv *hdd_ipa)
{
}
#endif
/**
* hdd_ipa_is_pre_filter_enabled() - Is IPA pre-filter enabled?
* @hdd_ipa: Global HDD IPA context
@ -2017,6 +2038,9 @@ int hdd_ipa_uc_ssr_deinit(void)
}
qdf_mutex_release(&hdd_ipa->ipa_lock);
if (hdd_ipa_uc_sta_is_enabled(hdd_ipa->hdd_ctx))
hdd_ipa_uc_sta_reset_sta_connected(hdd_ipa);
/* Full IPA driver cleanup not required since wlan driver is now
* unloaded and reloaded after SSR.
*/