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Thu, 07 Aug 2025 04:18:51 -0700 (PDT) Received: from localhost ([2001:19f0:ac00:4eb8:5400:5ff:fe30:7df3]) by smtp.gmail.com with UTF8SMTPSA id d9443c01a7336-241d1f0f576sm181751225ad.47.2025.08.07.04.18.51 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 07 Aug 2025 04:18:51 -0700 (PDT) From: Inochi Amaoto To: Thomas Gleixner , Paul Walmsley , Samuel Holland Cc: Inochi Amaoto , linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, Yixun Lan , Longbin Li Subject: [PATCH] irqchip/sifive-plic: Respect mask state when setting affinity Date: Thu, 7 Aug 2025 19:18:05 +0800 Message-ID: <20250807111806.741706-1-inochiama@gmail.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The plic_set_affinity always call plic_irq_enable(), which clears up the priority setting even the irq is only masked. This make the irq unmasked unexpectly. Replace the plic_irq_enable/disable() with plic_irq_toggle() to avoid changing priority setting. Suggested-by: Thomas Gleixner Signed-off-by: Inochi Amaoto Reviewed-by: Nam Cao Tested-by: Nam Cao # VisionFive 2 --- drivers/irqchip/irq-sifive-plic.c | 7 +++++-- 1 file changed, 5 insertions(+), 2 deletions(-) diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive= -plic.c index bf69a4802b71..5bf5050996da 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -148,6 +148,7 @@ static void plic_irq_enable(struct irq_data *d) =20 static void plic_irq_disable(struct irq_data *d) { + plic_irq_mask(d); plic_irq_toggle(irq_data_get_effective_affinity_mask(d), d, 0); } =20 @@ -179,12 +180,14 @@ static int plic_set_affinity(struct irq_data *d, if (cpu >=3D nr_cpu_ids) return -EINVAL; =20 - plic_irq_disable(d); + /* Invalidate the original routing entry */ + plic_irq_toggle(irq_data_get_effective_affinity_mask(d), d, 0); =20 irq_data_update_effective_affinity(d, cpumask_of(cpu)); =20 + /* Setting the new routing entry if irq is enabled */ if (!irqd_irq_disabled(d)) - plic_irq_enable(d); + plic_irq_toggle(irq_data_get_effective_affinity_mask(d), d, 1); =20 return IRQ_SET_MASK_OK_DONE; } --=20 2.50.1