[PATCH 5.4 080/111] octeontx2-af: Fix irq free in rvu teardown

[Greg Kroah-Hartman <gregkh@linuxfoundation.org>]

From: Geetha sowjanya <gakula@marvell.com>

[ Upstream commit ae2619dd4fccdad9876aa5f900bd85484179c50f ]

Current devlink code try to free already freed irqs as the
irq_allocate flag is not cleared after free leading to kernel
crash while removing rvu driver. The patch fixes the irq free
sequence and clears the irq_allocate flag on free.

Fixes: 7304ac4567bc ("octeontx2-af: Add mailbox IRQ and msg handlers")
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: Hariprasad Kelam <hkelam@marvell.com>
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/net/ethernet/marvell/octeontx2/af/rvu.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index e581091c09c4..02b4620f7368 100644
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -1980,8 +1980,10 @@ static void rvu_unregister_interrupts(struct rvu *rvu)
 		    INTR_MASK(rvu->hw->total_pfs) & ~1ULL);
 
 	for (irq = 0; irq < rvu->num_vec; irq++) {
-		if (rvu->irq_allocated[irq])
+		if (rvu->irq_allocated[irq]) {
 			free_irq(pci_irq_vector(rvu->pdev, irq), rvu);
+			rvu->irq_allocated[irq] = false;
+		}
 	}
 
 	pci_free_irq_vectors(rvu->pdev);
-- 
2.30.1