[PATCH 1/1] ufs: core: fix &hwq->cq_lock deadlock issue

[Bart Van Assche]

On 4/21/23 00:56, Alice Chao wrote:
> When ufshcd_err_handler() is executed, CQ event interrupt can enter
> waiting for the same lock. It could happened in upstream code path
> ufshcd_handle_mcq_cq_events() and also in ufs_mtk_mcq_intr(). This
> warning message will be generated when &hwq->cq_lock is used in IRQ
> context with IRQ enabled. Use ufshcd_mcq_poll_cqe_lock() with
> spin_lock_irqsave instead of spin_lock to resolve the deadlock issue.

Please add a Fixes: tag.

Thanks,

Bart.