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([183.91.15.56]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-84fa9195371sm17687b3a.11.2026.08.10.21.19.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 10 Aug 2026 21:19:46 -0700 (PDT) From: phucduc.bui@gmail.com To: Will Deacon , Mark Rutland Cc: linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, bui duc phuc Subject: [PATCH] perf/arm-smmuv3: Propagate errors from optional IRQ lookup Date: Tue, 11 Aug 2026 11:19:34 +0700 Message-ID: <20260811041934.7609-1-phucduc.bui@gmail.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260810_211948_119428_EFF3AD40 X-CRM114-Status: GOOD ( 12.13 ) 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 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 optional IRQ is available, while other errors should be propagated. Propagate all error codes returned by platform_get_irq_optional() other than -ENXIO. Signed-off-by: bui duc phuc --- drivers/perf/arm_smmuv3_pmu.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/drivers/perf/arm_smmuv3_pmu.c b/drivers/perf/arm_smmuv3_pmu.c index 621f02a7f43b..6c942697e57f 100644 --- a/drivers/perf/arm_smmuv3_pmu.c +++ b/drivers/perf/arm_smmuv3_pmu.c @@ -893,6 +893,8 @@ static int smmu_pmu_probe(struct platform_device *pdev) } irq = platform_get_irq_optional(pdev, 0); + if (irq < 0 && irq != -ENXIO) + return irq; if (irq > 0) smmu_pmu->irq = irq; -- 2.43.0