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Oded Gabbay committed 1bf1b431d98
iommu/amd: Fix bug in put_pasid_state_wait This patch fixes a bug in put_pasid_state_wait that appeared in kernel 4.0 The bug is that pasid_state->count wasn't decremented before entering the wait_event. Thus, the condition in wait_event will never be true. The fix is to decrement (atomically) the pasid_state->count before the wait_event. Signed-off-by: Oded Gabbay <oded.gabbay@amd.com> Cc: stable@vger.kernel.org #v4.0 Signed-off-by: Joerg Roedel <jroedel@suse.de>