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Sun, 09 Aug 2026 08:07:25 -0700 (PDT) Received: from server.roeck-us.net ([2600:1700:e321:62f0:da43:aeff:fecc:bfd5]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-315bec68468sm34471013eec.31.2026.08.09.08.07.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 09 Aug 2026 08:07:24 -0700 (PDT) Date: Sun, 9 Aug 2026 08:07:24 -0700 From: Guenter Roeck To: phucduc.bui@gmail.com Cc: Wim Van Sebroeck , Maxime Coquelin , Alexandre Torgue , linux-watchdog@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org Subject: Re: [PATCH v2 2/2] watchdog: stm32_iwdg: Propagate errors from optional IRQ lookup Message-ID: <84fbf9f7-4b30-48d4-895d-efa10cffcfc0@roeck-us.net> References: <20260807080447.35479-1-phucduc.bui@gmail.com> <20260807080447.35479-2-phucduc.bui@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260807080447.35479-2-phucduc.bui@gmail.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260809_080726_536424_DB1C6C3A X-CRM114-Status: GOOD ( 11.08 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Aug 07, 2026 at 03:04:47PM +0700, phucduc.bui@gmail.com wrote: > From: bui duc phuc > > platform_get_irq_optional() returns a positive IRQ number on success or > a negative error code on failure. For an optional IRQ, -ENXIO indicates > that no IRQ is available, while other errors should be propagated. > > Propagate errors such as -EPROBE_DEFER and -EINVAL instead of continuing > probe without the IRQ. > > Signed-off-by: bui duc phuc Applie. Thanks, Guenter