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qcacld-3.0: Defer recovery cleanup to shutdown

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As part of the firmware down notification if the indication comes
in the non-interrupt context the driver flushes the idle timeout
work and purges the shutdown down notifier.

If the the idletimeout is already running, as part of the idletimeout
work the platform,mhi irq's will also be freed, if the firmware crashes
and enters the RDDM mode during this time, platform driver will notify
the host through the uevent. Since free_irq waits for all the pending
interrupts to be serviced resulting in the deadlock.

Dont flush the work for the pci bus so the interrupt could
be completed and free irq could also be unblocked.

Change-Id: I4e106ff774fa90544ba97737a87682f42f9288df
CRs-Fixed: 2720348
This commit is contained in:
Arun Kumar Khandavalli 2020-06-28 11:37:18 +05:30
commit 3d15529d3e
1 changed files with 4 additions and 1 deletions
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5
core/hdd/src/wlan_hdd_driver_ops.c
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@ -1786,6 +1786,9 @@ wlan_hdd_pld_uevent(struct device *dev, struct pld_uevent_data *event_data)
{
struct qdf_notifer_data hang_evt_data;
enum qdf_hang_reason reason = QDF_REASON_UNSPECIFIED;
uint8_t bus_type;
bus_type = pld_get_bus_type(dev);
switch (event_data->uevent) {
case PLD_FW_DOWN:
@ -1803,7 +1806,7 @@ wlan_hdd_pld_uevent(struct device *dev, struct pld_uevent_data *event_data)
* thus defer the cleanup to be done during
* hdd_soc_recovery_shutdown
*/
if (qdf_in_interrupt())
if (qdf_in_interrupt() || bus_type == PLD_BUS_TYPE_PCIE)
break;
hdd_soc_recovery_cleanup();