From: Anup Patel Date: Mon, 18 May 2020 09:14:39 +0000 (+0530) Subject: irqchip/sifive-plic: Set default irq affinity in plic_irqdomain_map() X-Git-Tag: v5.7.5~82 X-Git-Url: https://www.infradead.org/git/?a=commitdiff_plain;h=9c7284beb4474066b82a3039bd2c65c210b91402;p=users%2Fdwmw2%2Flinux.git irqchip/sifive-plic: Set default irq affinity in plic_irqdomain_map() commit 2458ed31e9b9ab40d78a452ab2650a0857556e85 upstream. For multiple PLIC instances, each PLIC can only target a subset of CPUs which is represented by "lmask" in the "struct plic_priv". Currently, the default irq affinity for each PLIC interrupt is all online CPUs which is illegal value for default irq affinity when we have multiple PLIC instances. To fix this, we now set "lmask" as the default irq affinity in for each interrupt in plic_irqdomain_map(). Fixes: f1ad1133b18f ("irqchip/sifive-plic: Add support for multiple PLICs") Signed-off-by: Anup Patel Signed-off-by: Marc Zyngier Reviewed-by: Palmer Dabbelt Acked-by: Palmer Dabbelt Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200518091441.94843-2-anup.patel@wdc.com Signed-off-by: Greg Kroah-Hartman --- diff --git a/drivers/irqchip/irq-sifive-plic.c b/drivers/irqchip/irq-sifive-plic.c index d0a71febdadce..6955890a01f79 100644 --- a/drivers/irqchip/irq-sifive-plic.c +++ b/drivers/irqchip/irq-sifive-plic.c @@ -176,9 +176,12 @@ static struct irq_chip plic_chip = { static int plic_irqdomain_map(struct irq_domain *d, unsigned int irq, irq_hw_number_t hwirq) { + struct plic_priv *priv = d->host_data; + irq_domain_set_info(d, irq, hwirq, &plic_chip, d->host_data, handle_fasteoi_irq, NULL, NULL); irq_set_noprobe(irq); + irq_set_affinity(irq, &priv->lmask); return 0; }