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[34.83.65.128]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-23506d14bcfsm90207425ad.236.2025.06.03.10.55.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 03 Jun 2025 10:55:18 -0700 (PDT) Date: Tue, 3 Jun 2025 10:55:14 -0700 From: William McVicker To: Daniel Lezcano Cc: tglx@linutronix.de, Jim Cromie , Maxime Coquelin , Alexandre Torgue , Chen-Yu Tsai , Jernej Skrabec , Samuel Holland , Thierry Reding , Jonathan Hunter , "Peter Zijlstra (Intel)" , Marco Elver , Nam Cao , linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, linux-sunxi@lists.linux.dev, linux-tegra@vger.kernel.org, John Stulz , Peter Griffin , Saravan Kanna Subject: Re: [PATCH v1 3/7] clocksource/drivers/sun5i: Add module owner Message-ID: References: <20250602151853.1942521-1-daniel.lezcano@linaro.org> <20250602151853.1942521-4-daniel.lezcano@linaro.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250602151853.1942521-4-daniel.lezcano@linaro.org> On 06/02/2025, Daniel Lezcano wrote: > The conversion to modules requires a correct handling of the module > refcount in order to prevent to unload it if it is in use. That is > especially true with the clockevents where there is no function to > unregister them. > > The core time framework correctly handles the module refcount with the > different clocksource and clockevents if the module owner is set. > > Add the module owner to make sure the core framework will prevent > stupid things happening when the driver will be converted into a > module. > > Signed-off-by: Daniel Lezcano Reviewed-by: Will McVicker Thanks, Will > --- > drivers/clocksource/timer-sun5i.c | 2 ++ > 1 file changed, 2 insertions(+) > > diff --git a/drivers/clocksource/timer-sun5i.c b/drivers/clocksource/timer-sun5i.c > index 6b48a9006444..f827d3f98f60 100644 > --- a/drivers/clocksource/timer-sun5i.c > +++ b/drivers/clocksource/timer-sun5i.c > @@ -185,6 +185,7 @@ static int sun5i_setup_clocksource(struct platform_device *pdev, > cs->clksrc.read = sun5i_clksrc_read; > cs->clksrc.mask = CLOCKSOURCE_MASK(32); > cs->clksrc.flags = CLOCK_SOURCE_IS_CONTINUOUS; > + cs->clksrc.owner = THIS_MODULE; > > ret = clocksource_register_hz(&cs->clksrc, rate); > if (ret) { > @@ -214,6 +215,7 @@ static int sun5i_setup_clockevent(struct platform_device *pdev, > ce->clkevt.rating = 340; > ce->clkevt.irq = irq; > ce->clkevt.cpumask = cpu_possible_mask; > + ce->clkevt.owner = THIS_MODULE; > > /* Enable timer0 interrupt */ > val = readl(base + TIMER_IRQ_EN_REG); > -- > 2.43.0 >