linux-kernel - Re: [PATCH v3] bus: mhi: host: Skip MHI reset if device is in RDDM

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Message-ID: <08763c37-38b0-5964-67f0-95f70a0685e9@quicinc.com>
Date:   Tue, 16 May 2023 13:42:28 -0600
From:   Jeffrey Hugo <quic_jhugo@...cinc.com>
To:     Qiang Yu <quic_qianyu@...cinc.com>, <mani@...nel.org>
CC:     <mhi@...ts.linux.dev>, <linux-arm-msm@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <quic_cang@...cinc.com>,
        <quic_mrana@...cinc.com>
Subject: Re: [PATCH v3] bus: mhi: host: Skip MHI reset if device is in RDDM

On 5/11/2023 8:05 PM, Qiang Yu wrote:
> In RDDM EE, device can not process MHI reset issued by host. In case of MHI
> power off, host is issuing MHI reset and polls for it to get cleared until
> it times out. Since this timeout can not be avoided in case of RDDM, skip
> the MHI reset in this scenarios.
> 
> Fixes: a6e2e3522f29 ("bus: mhi: core: Add support for PM state transitions")
> Signed-off-by: Qiang Yu <quic_qianyu@...cinc.com>

I believe Mani will want you to CC stable.

Assuming that
Reviewed-by: Jeffrey Hugo <quic_jhugo@...cinc.com>