linux-kernel - Re: [PATCH 0/2] dmaengine: idxd: Fix up re-enabling device workqueues

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Date:   Mon, 19 Sep 2022 15:07:10 -0700
From:   Dave Jiang <dave.jiang@...el.com>
To:     Jerry Snitselaar <jsnitsel@...hat.com>,
        linux-kernel@...r.kernel.org, dmaengine@...r.kernel.org
Cc:     Fenghua Yu <fenghua.yu@...el.com>, Vinod Koul <vkoul@...nel.org>,
        Fengqian Gao <fengqian.gao@...el.com>,
        "Shen, Xiaochen" <xiaochen.shen@...el.com>
Subject: Re: [PATCH 0/2] dmaengine: idxd: Fix up re-enabling device workqueues


On 9/19/2022 2:55 PM, Jerry Snitselaar wrote:
> Currently if a software reset is attempted on an idxd device
> the workqueues will not be re-enabled, because it will see
> incorrectly see that wq->state is already set to IDXD_WQ_ENABLED.
> So set the workqueue state to disabled in idxd_wq_disable_cleanup(),
> and use a bitmap to track which workqueues have been enabled so they
> can be re-enabled during device re-initialization.
>
> Cc: Fenghua Yu <fenghua.yu@...el.com>
> Cc: Dave Jiang <dave.jiang@...el.com>
> Cc: Vinod Koul <vkoul@...nel.org>

For the series,

Reviewed-by: Dave Jiang <dave.jiang@...el.com>

Thank you Jerry!

> Jerry Snitselaar (2):
>    dmaengine: idxd: Set wq state to disabled in idxd_wq_disable_cleanup()
>    dmaengine: idxd: track enabled workqueues in bitmap
>
>   drivers/dma/idxd/device.c | 4 +++-
>   drivers/dma/idxd/idxd.h   | 2 ++
>   drivers/dma/idxd/init.c   | 6 ++++++
>   drivers/dma/idxd/irq.c    | 4 ++--
>   drivers/dma/idxd/sysfs.c  | 1 +
>   5 files changed, 14 insertions(+), 3 deletions(-)
>