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Wed, 03 Jun 2026 23:50:16 -0700 (PDT) Received: from localhost.localdomain ([76.32.119.210]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-137f5539432sm4109780c88.9.2026.06.03.23.50.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 03 Jun 2026 23:50:15 -0700 (PDT) From: Hungyu Lin To: vikash.garodia@oss.qualcomm.com, dikshita.agarwal@oss.qualcomm.com Cc: abhinav.kumar@linux.dev, bod@kernel.org, mchehab@kernel.org, linux-media@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Hungyu Lin Subject: [PATCH] media: qcom: iris: guard IRQ handler with runtime PM check Date: Thu, 4 Jun 2026 06:49:57 +0000 Message-Id: <20260604064957.44597-1-dennylin0707@gmail.com> X-Mailer: git-send-email 2.34.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Use pm_runtime_get_if_in_use() before accessing hardware registers in the threaded IRQ handler. Skip interrupt processing when the device is not in use. Signed-off-by: Hungyu Lin --- drivers/media/platform/qcom/iris/iris_hfi_common.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/drivers/media/platform/qcom/iris/iris_hfi_common.c b/drivers/media/platform/qcom/iris/iris_hfi_common.c index 621c66593d88..ffb2e65f90f8 100644 --- a/drivers/media/platform/qcom/iris/iris_hfi_common.c +++ b/drivers/media/platform/qcom/iris/iris_hfi_common.c @@ -104,6 +104,11 @@ irqreturn_t iris_hfi_isr_handler(int irq, void *data) if (!core) return IRQ_NONE; + if (!pm_runtime_get_if_in_use(core->dev)) { + enable_irq(irq); + return IRQ_HANDLED; + } + mutex_lock(&core->lock); pm_runtime_mark_last_busy(core->dev); iris_vpu_clear_interrupt(core); @@ -111,6 +116,8 @@ irqreturn_t iris_hfi_isr_handler(int irq, void *data) core->hfi_response_ops->hfi_response_handler(core); + pm_runtime_put_autosuspend(core->dev); + if (!iris_vpu_watchdog(core, core->intr_status)) enable_irq(irq); -- 2.34.1