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7a39b9856a
cdma_timeout_destroy() used cancel_delayed_work() to cancel pending timeout work when destroying the CDMA. Usually this is fine, but there is a narrow race condition where the timeout handler has started execution but has not taken cdma->lock; the channel is freed causing cdma_stop to take cdma->lock and flush the channel; host1x_cdma_deinit then proceeds with deinitializing cdma while the handler is waiting to take cdma->lock. Therefore change cdma_timeout_destroy to use cancel_delayed_work_sync instead to ensure any pending timeout work completes before proceeding. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Link: https://patch.msgid.link/20260609-b4-host1x-small-fixes-a-v1-1-7c1131c0b3ad@nvidia.com