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octeontx2-af: Fix irq free in rvu teardown

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[ 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: 7304ac4567 ("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>
This commit is contained in:
Geetha sowjanya 2021-03-18 19:45:46 +05:30 committed by Greg Kroah-Hartman
parent e158238012
commit 7e9a48cecc
1 changed files with 3 additions and 1 deletions
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4
drivers/net/ethernet/marvell/octeontx2/af/rvu.c
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@ -1980,8 +1980,10 @@ static void rvu_unregister_interrupts(struct rvu *rvu)
INTR_MASK(rvu->hw->total_pfs) & ~1ULL); INTR_MASK(rvu->hw->total_pfs) & ~1ULL);
for (irq = 0; irq < rvu->num_vec; irq++) { 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); free_irq(pci_irq_vector(rvu->pdev, irq), rvu);
rvu->irq_allocated[irq] = false;
}
} }
pci_free_irq_vectors(rvu->pdev); pci_free_irq_vectors(rvu->pdev);