From: Andy Shevchenko <andriy.shevchenko@intel.com>
To: Jiale Yao <yaojiale02@163.com>
Cc: "Jonathan Cameron" <jic23@kernel.org>,
"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: Fri, 25 Sep 2026 17:18:44 +0300 [thread overview]
Message-ID: <araCxIGnZK0zuUSS@ashevche-desk.local> (raw)
In-Reply-To: <20260925141006.2255067-1-yaojiale02@163.com>
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.
--
With Best Regards,
Andy Shevchenko
next prev parent reply other threads:[~2026-09-25 14:18 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 [this message]
2026-09-27 17:20 ` Jonathan Cameron
2026-09-28 8:30 ` jiale yao
2026-10-11 11:31 ` Jonathan Cameron
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