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Fri, 16 Oct 2026 11:57:52 -0700 (PDT) Date: Fri, 16 Oct 2026 11:57:49 -0700 From: Dmitry Torokhov To: Myeonghun Pak Cc: patches@opensource.cirrus.com, linux-input@vger.kernel.org, linux-kernel@vger.kernel.org, Ijae Kim Subject: Re: [PATCH] Input: wm831x-on - free the mapped IRQ on removal Message-ID: References: <20261016024300.3660850-1-mhun512@gmail.com> 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: <20261016024300.3660850-1-mhun512@gmail.com> Hi Myeonghun, On Thu, Oct 15, 2026 at 10:43:00PM -0400, Myeonghun Pak wrote: > Probe requests the Linux IRQ returned by wm831x_irq(), but remove > passes the untransformed MFD IRQ resource to free_irq(). The two numbers > are not guaranteed to match. If they differ, the ON handler remains > registered and can queue polling work after the input device and driver > data have been released. > > Store the requested IRQ and free it before cancelling polling work on > removal. Also cancel already queued work after free_irq() when input > registration fails; free_irq() waits for the handler but does not cancel > its work. Why don't we switch to devm_delayed_work_autocancel() and devm_request_irq() (or maybe use devm_request_threaded_itq() and get rid of the delayed work)? Also we need to get rid of wm831_irq() and make MFD give us already mapped interrupt. Thanks. -- Dmitry