octeontx2-af: Fix irq free in rvu teardown

[ 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>

diff --git a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
index e1f9189..644d28b 100644 (file)
--- a/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
+++ b/drivers/net/ethernet/marvell/octeontx2/af/rvu.c
@@ -2151,8 +2151,10 @@ 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);