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qcacmn: Add API to deint scan runtime suspend lock

Browse source 
Add API to deint scan runtime suspend lock, which can be called
before HIF is closed, to avoid crash while acessing HIF pointer.

Change-Id: Ida9269cdaea33a387e2acd1e3d9670d152b6016f
CRs-Fixed: 2065228
This commit is contained in:
Abhishek Singh 2017-06-06 12:25:39 +05:30 • committed by snandini
commit fb9d5acfed
2 changed files with 26 additions and 2 deletions
Download patch file Download diff file Expand all files Collapse all files

12
os_if/linux/scan/inc/wlan_cfg80211_scan.h
View file

@ -139,6 +139,18 @@ int wlan_cfg80211_sched_scan_stop(struct wlan_objmgr_pdev *pdev,
struct net_device *dev);
#endif
/**
* wlan_scan_runtime_pm_deinit() - API to deinitialize runtime pm
* for scan.
* @pdev: Pointer to pdev
*
* This will help to deinitialize scan runtime pm before deinitialize
* HIF
*
* Return: void
*/
void wlan_scan_runtime_pm_deinit(struct wlan_objmgr_pdev *pdev);
/**
* wlan_cfg80211_scan_priv_init() - API to initialize cfg80211 scan
* @pdev: Pointer to net device

16
os_if/linux/scan/src/wlan_cfg80211_scan.c
View file

@ -773,6 +773,20 @@ allow_suspend:
}
void wlan_scan_runtime_pm_deinit(struct wlan_objmgr_pdev *pdev)
{
struct pdev_osif_priv *osif_priv;
struct osif_scan_pdev *scan_priv;
wlan_pdev_obj_lock(pdev);
osif_priv = wlan_pdev_get_ospriv(pdev);
wlan_pdev_obj_unlock(pdev);
scan_priv = osif_priv->osif_scan;
qdf_runtime_lock_deinit(scan_priv->runtime_pm_lock);
scan_priv->runtime_pm_lock = NULL;
}
QDF_STATUS wlan_cfg80211_scan_priv_init(struct wlan_objmgr_pdev *pdev)
{
struct pdev_osif_priv *osif_priv;
@ -819,8 +833,6 @@ QDF_STATUS wlan_cfg80211_scan_priv_deinit(struct wlan_objmgr_pdev *pdev)
ucfg_scan_unregister_requester(psoc, scan_priv->req_id);
qdf_list_destroy(&scan_priv->scan_req_q);
qdf_mutex_destroy(&scan_priv->scan_req_q_lock);
qdf_runtime_lock_deinit(scan_priv->runtime_pm_lock);
scan_priv->runtime_pm_lock = NULL;
qdf_mem_free(scan_priv);
return QDF_STATUS_SUCCESS;