From: Jonathan Cameron <jic23@kernel.org>
To: Andy Shevchenko <andriy.shevchenko@intel.com>
Cc: "Jiale Yao" <yaojiale02@163.com>,
"David Lechner" <dlechner@baylibre.com>,
"Nuno Sá" <nuno.sa@analog.com>,
"Andy Shevchenko" <andy@kernel.org>,
"Uwe Kleine-König (The Capable Hub)"
<u.kleine-koenig@baylibre.com>,
"Takashi Sakamoto" <o-takashi@sakamocchi.jp>,
"Siratul Islam" <email@sirat.me>,
"Maxwell Doose" <maxwell@maxwelld.cc>,
linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] iio: imu: kmx61: reject duplicate event disable
Date: Sun, 27 Sep 2026 18:20:31 +0100 [thread overview]
Message-ID: <20260927182031.6d490331@jic23-hlaptop> (raw)
In-Reply-To: <araCxIGnZK0zuUSS@ashevche-desk.local>
On Fri, 25 Sep 2026 17:18:44 +0300
Andy Shevchenko <andriy.shevchenko@intel.com> wrote:
> On Fri, Sep 25, 2026 at 10:10:05PM +0800, Jiale Yao wrote:
> > The IIO core does not filter duplicate writes to the event enable
> > attribute. kmx61_write_event_config() already ignores repeated enable
> > requests, but a repeated disable request still calls
> > kmx61_set_power_state(data, false, KMX61_ACC), dropping a runtime PM
> > reference that was not acquired for this request. This can underflow the
> > runtime PM usage count and trigger a "Runtime PM usage count underflow"
> > warning.
> >
> > Return early when the requested state already matches ev_enable_state.
>
> Same comments as per previous patches of the same topic.
>
Fixes tag needed.
next prev parent reply other threads:[~2026-09-27 17:20 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-25 14:10 Jiale Yao
2026-09-25 14:18 ` Andy Shevchenko
2026-09-27 17:20 ` Jonathan Cameron [this message]
2026-09-28 8:30 ` jiale yao
2026-10-11 11:31 ` Jonathan Cameron
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