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([14.160.25.72]) by smtp.gmail.com with ESMTPSA id 5a478bee46e88-31ec0223e31sm5465372eec.25.2026.08.13.01.52.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 13 Aug 2026 01:52:28 -0700 (PDT) From: phucduc.bui@gmail.com To: Kamal Dasu , Broadcom internal kernel review list , Andi Shyti , Florian Fainelli , linux-i2c@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Cc: Wolfram Sang , bui duc phuc Subject: [PATCH 0/3] Handle optional IRQs correctly Date: Thu, 13 Aug 2026 15:52:10 +0700 Message-ID: <20260813085213.44001-1-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: bui duc phuc Hi all, The changes were found through code inspection while reviewing optional IRQ handling in I2C drivers. I noticed that some drivers already handle the return value of platform_get_irq_optional() explicitly, including i2c-designware-platdrv, i2c-ocores, and i2c-sh_mobile. This series updates the affected drivers to properly handle errors from platform_get_irq_optional() and distinguish a missing optional IRQ from other errors. The series also fixes the handling of IRQ 0 in the brcmstb driver, since 0 is not a valid IRQ number returned by platform_get_irq_optional(). The series was only compile-tested. Best regards, Phuc bui duc phuc (3): i2c: pca-platform: Handle errors from optional IRQ lookup i2c: brcmstb: Handle errors from optional IRQ lookup i2c: brcmstb: Correct optional IRQ handling drivers/i2c/busses/i2c-brcmstb.c | 6 ++++-- drivers/i2c/busses/i2c-pca-platform.c | 5 ++++- 2 files changed, 8 insertions(+), 3 deletions(-) -- 2.43.0