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habanalabs: fix nullifying of destroyed mmu pgt pool
[ Upstream commit 89aad77 ] In case of host-resident MMU, when the page tables pool is destroyed, its pointer is not nullified correctly. As a result, on a device fini which happens after a failing reset, the already destroyed pool is accessed, which leads to a kernel panic. The patch fixes the setting of the pool pointer to NULL. Signed-off-by: Tomer Tayar <ttayar@habana.ai> Reviewed-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Oded Gabbay <ogabbay@kernel.org> Signed-off-by: Sasha Levin <sashal@kernel.org>
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