linux-kernel - Re: [PATCH v1] PM-runtime: Check supplier

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Message-ID: <5c9a3908-a2c6-76d7-db6d-d762503d640a@mediatek.com>
Date:   Tue, 2 Aug 2022 11:19:10 +0800
From:   Peter Wang <peter.wang@...iatek.com>
To:     "Rafael J. Wysocki" <rafael@...nel.org>
CC:     "Rafael J. Wysocki" <rjw@...ysocki.net>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Linux PM <linux-pm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v1] PM-runtime: Check supplier_preactivated before release
 supplier


> Hi Rafael,
>
> Yes, it is very clear!
> I miss this important key point that usage_count is always > 
> rpm_active 1.
> I think this patch could work.
>
> Thanks.
> Peter
>
>
>
>
Hi Rafael,

After test with commit ("887371066039011144b4a94af97d9328df6869a2 PM: 
runtime: Fix supplier device management during consumer probe") past weeks,
The supplier still suspend when consumer is active "after" 
pm_runtime_put_suppliers.
Do you have any idea about that?

Thanks.
Peter