From: Bhaumik Bhatt <bbhatt@codeaurora.org>
To: Loic Poulain <loic.poulain@linaro.org>
Cc: mani@kernel.org, linux-arm-msm@vger.kernel.org,
hemantk@codeaurora.org, stable@vger.kernel.org
Subject: Re: [PATCH] mhi: pci_generic: Graceful shutdown on freeze
Date: Mon, 25 Oct 2021 10:00:56 -0700 [thread overview]
Message-ID: <25236e618b450cf89e918505da624fa5@codeaurora.org> (raw)
In-Reply-To: <1635151940-22147-1-git-send-email-loic.poulain@linaro.org>
On 2021-10-25 01:52 AM, Loic Poulain wrote:
> There is no reason for shutting down MHI ungracefully on freeze,
> this causes the MHI host stack & device stack to not be aligned
> anymore since the proper MHI reset sequence is not performed for
> ungraceful shutdown.
>
> Cc: stable@vger.kernel.org
> Fixes: 5f0c2ee1fe8d ("bus: mhi: pci-generic: Fix hibernation")
> Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
> ---
> drivers/bus/mhi/pci_generic.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/drivers/bus/mhi/pci_generic.c
> b/drivers/bus/mhi/pci_generic.c
> index 6a42425..d4a3ce2 100644
> --- a/drivers/bus/mhi/pci_generic.c
> +++ b/drivers/bus/mhi/pci_generic.c
> @@ -1018,7 +1018,7 @@ static int __maybe_unused mhi_pci_freeze(struct
> device *dev)
> * context.
> */
> if (test_and_clear_bit(MHI_PCI_DEV_STARTED, &mhi_pdev->status)) {
> - mhi_power_down(mhi_cntrl, false);
> + mhi_power_down(mhi_cntrl, true);
> mhi_unprepare_after_power_down(mhi_cntrl);
> }
Reviewed-by: Bhaumik Bhatt <bbhatt@codeaurora.org>
Thanks,
Bhaumik
---
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Forum,
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next prev parent reply other threads:[~2021-10-25 17:08 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-25 8:52 [PATCH] mhi: pci_generic: Graceful shutdown on freeze Loic Poulain
2021-10-25 17:00 ` Bhaumik Bhatt [this message]
2021-10-25 21:58 ` Hemant Kumar
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