netdev - [PATCH net 1/3] ice: Fix reset handler

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Message-ID: <20240807224521.3819189-2-anthony.l.nguyen@intel.com>
Date: Wed,  7 Aug 2024 15:45:18 -0700
From: Tony Nguyen <anthony.l.nguyen@...el.com>
To: davem@...emloft.net,
	kuba@...nel.org,
	pabeni@...hat.com,
	edumazet@...gle.com,
	netdev@...r.kernel.org
Cc: Grzegorz Nitka <grzegorz.nitka@...el.com>,
	anthony.l.nguyen@...el.com,
	horms@...nel.org,
	Sergey Temerkhanov <sergey.temerkhanov@...el.com>,
	Przemek Kitszel <przemyslaw.kitszel@...el.com>,
	Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com>
Subject: [PATCH net 1/3] ice: Fix reset handler

From: Grzegorz Nitka <grzegorz.nitka@...el.com>

Synchronize OICR IRQ when preparing for reset to avoid potential
race conditions between the reset procedure and OICR

Fixes: 4aad5335969f ("ice: add individual interrupt allocation")
Signed-off-by: Grzegorz Nitka <grzegorz.nitka@...el.com>
Signed-off-by: Sergey Temerkhanov <sergey.temerkhanov@...el.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@...el.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@...el.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@...el.com>
---
 drivers/net/ethernet/intel/ice/ice_main.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/drivers/net/ethernet/intel/ice/ice_main.c b/drivers/net/ethernet/intel/ice/ice_main.c
index 3de020020bc4..6f97ed471fe9 100644
--- a/drivers/net/ethernet/intel/ice/ice_main.c
+++ b/drivers/net/ethernet/intel/ice/ice_main.c
@@ -559,6 +559,8 @@ ice_prepare_for_reset(struct ice_pf *pf, enum ice_reset_req reset_type)
 	if (test_bit(ICE_PREPARED_FOR_RESET, pf->state))
 		return;
 
+	synchronize_irq(pf->oicr_irq.virq);
+
 	ice_unplug_aux_dev(pf);
 
 	/* Notify VFs of impending reset */
-- 
2.42.0