Kalesh AP 55862094a9
bnxt_en: Do not call sleeping hwmon_notify_event() from NAPI ...
Defer hwmon_notify_event() to bnxt_sp_task() workqueue because
hwmon_notify_event() can try to acquire a mutex shown in the stack trace
below. Modify bnxt_event_error_report() to return true if we need to
schedule bnxt_sp_task() to notify hwmon.
__schedule+0x68/0x520
hwmon_notify_event+0xe8/0x114
schedule+0x60/0xe0
schedule_preempt_disabled+0x28/0x40
__mutex_lock.constprop.0+0x534/0x550
__mutex_lock_slowpath+0x18/0x20
mutex_lock+0x5c/0x70
kobject_uevent_env+0x2f4/0x3d0
kobject_uevent+0x10/0x20
hwmon_notify_event+0x94/0x114
bnxt_hwmon_notify_event+0x40/0x70 [bnxt_en]
bnxt_event_error_report+0x260/0x290 [bnxt_en]
bnxt_async_event_process.isra.0+0x250/0x850 [bnxt_en]
bnxt_hwrm_handler.isra.0+0xc8/0x120 [bnxt_en]
bnxt_poll_p5+0x150/0x350 [bnxt_en]
__napi_poll+0x3c/0x210
net_rx_action+0x308/0x3b0
__do_softirq+0x120/0x3e0
Cc: Guenter Roeck <linux@roeck-us.net >
Fixes: a19b480145kalesh-anakkur.purayil@broadcom.com >
Signed-off-by: Michael Chan <michael.chan@broadcom.com >
Signed-off-by: David S. Miller <davem@davemloft.net >
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55862094a9