Re: [PATCH v4 12/15] PCI: vmd: Silence set affinity failed warning

[Nirmal Patel <nirmal.patel@linux.intel.com>]

On Tue, 23 Jul 2024 15:27:12 +0200
Marek Vasut <marek.vasut+renesas@mailbox.org> wrote:

> Use newly introduced MSI_FLAG_NO_AFFINITY, which keeps
> .irq_set_affinity unset and allows migrate_one_irq() code in
> cpuhotplug.c to exit right away, without printing "IRQ...: set
> affinity failed(-22)" warning.
> 
> Remove .irq_set_affinity implementation which only return -EINVAL
> from this controller driver.
> 
> Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
> ---
> Cc: "Krzysztof Wilczyński" <kw@linux.com>
> Cc: "Pali Rohár" <pali@kernel.org>
> Cc: "Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>
> Cc: Aleksandr Mishin <amishin@t-argos.ru>
> Cc: Anna-Maria Behnsen <anna-maria@linutronix.de>
> Cc: Anup Patel <apatel@ventanamicro.com>
> Cc: Bjorn Helgaas <bhelgaas@google.com>
> Cc: Broadcom internal kernel review list
> <bcm-kernel-feedback-list@broadcom.com> Cc: Daire McNamara
> <daire.mcnamara@microchip.com> Cc: Damien Le Moal <dlemoal@kernel.org>
> Cc: Florian Fainelli <florian.fainelli@broadcom.com>
> Cc: Hou Zhiqiang <Zhiqiang.Hou@nxp.com>
> Cc: Jianjun Wang <jianjun.wang@mediatek.com>
> Cc: Jim Quinlan <jim2101024@gmail.com>
> Cc: Jingoo Han <jingoohan1@gmail.com>
> Cc: Jisheng Zhang <Jisheng.Zhang@synaptics.com>
> Cc: Jon Hunter <jonathanh@nvidia.com>
> Cc: Jonathan Derrick <jonathan.derrick@linux.dev>
> Cc: Jonathan Hunter <jonathanh@nvidia.com>
> Cc: Joyce Ooi <joyce.ooi@intel.com>
> Cc: Karthikeyan Mitran <m.karthikeyan@mobiveil.co.in>
> Cc: Kishon Vijay Abraham I <kishon@kernel.org>
> Cc: Koichiro Den <den@valinux.co.jp>
> Cc: Lorenzo Pieralisi <lpieralisi@kernel.org>
> Cc: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
> Cc: Marc Zyngier <maz@kernel.org>
> Cc: Michal Simek <michal.simek@amd.com>
> Cc: Nicolas Saenz Julienne <nsaenz@kernel.org>
> Cc: Niklas Cassel <cassel@kernel.org>
> Cc: Nipun Gupta <nipun.gupta@amd.com>
> Cc: Nirmal Patel <nirmal.patel@linux.intel.com>
> Cc: Rob Herring <robh@kernel.org>
> Cc: Ryder Lee <ryder.lee@mediatek.com>
> Cc: Shivamurthy Shastri <shivamurthy.shastri@linutronix.de>
> Cc: Siddharth Vadapalli <s-vadapalli@ti.com>
> Cc: Thierry Reding <thierry.reding@gmail.com>
> Cc: Thomas Gleixner <tglx@linutronix.de>
> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
> Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
> Cc: linux-arm-kernel@lists.infradead.org
> Cc: linux-mediatek@lists.infradead.org
> Cc: linux-pci@vger.kernel.org
> Cc: linux-renesas-soc@vger.kernel.org
> Cc: linux-rpi-kernel@lists.infradead.org
> Cc: linux-tegra@vger.kernel.org
> ---
> V4: - New patch
> ---
>  drivers/pci/controller/vmd.c | 13 +------------
>  1 file changed, 1 insertion(+), 12 deletions(-)
> 
> diff --git a/drivers/pci/controller/vmd.c
> b/drivers/pci/controller/vmd.c index a726de0af011f..bc849b0d9e8dc
> 100644 --- a/drivers/pci/controller/vmd.c
> +++ b/drivers/pci/controller/vmd.c
> @@ -204,22 +204,11 @@ static void vmd_irq_disable(struct irq_data
> *data) raw_spin_unlock_irqrestore(&list_lock, flags);
>  }
>  
> -/*
> - * XXX: Stubbed until we develop acceptable way to not create
> conflicts with
> - * other devices sharing the same vector.
> - */
> -static int vmd_irq_set_affinity(struct irq_data *data,
> -				const struct cpumask *dest, bool
> force) -{
> -	return -EINVAL;
> -}
> -
>  static struct irq_chip vmd_msi_controller = {
>  	.name			= "VMD-MSI",
>  	.irq_enable		= vmd_irq_enable,
>  	.irq_disable		= vmd_irq_disable,
>  	.irq_compose_msi_msg	= vmd_compose_msi_msg,
> -	.irq_set_affinity	= vmd_irq_set_affinity,
>  };
>  
>  static irq_hw_number_t vmd_get_hwirq(struct msi_domain_info *info,
> @@ -326,7 +315,7 @@ static struct msi_domain_ops vmd_msi_domain_ops =
> { 
>  static struct msi_domain_info vmd_msi_domain_info = {
>  	.flags		= MSI_FLAG_USE_DEF_DOM_OPS |
> MSI_FLAG_USE_DEF_CHIP_OPS |
> -			  MSI_FLAG_PCI_MSIX,
> +			  MSI_FLAG_NO_AFFINITY | MSI_FLAG_PCI_MSIX,
>  	.ops		= &vmd_msi_domain_ops,
>  	.chip		= &vmd_msi_controller,
>  };

Reviewed-by: Nirmal Patel <nirmal.patel@linux.intel.com>

Thanks.