From: Eric W. Biederman Date: Fri, 23 Feb 2007 11:20:59 +0000 (-0700) Subject: [PATCH] x86_64 irq: Simplfiy the set_affinity logic. X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=5ff5115efafb08b49cbc8abdea9726884fba0b5a;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git [PATCH] x86_64 irq: Simplfiy the set_affinity logic. For some reason the code has been picking TARGET_CPUS when asked to set the affinity to an empty set of cpus. That is just silly it's extra work. Instead if there are no cpus to set the affinity to we should just give up immediately. That is simpler and a little more intuitive. Signed-off-by: Eric W. Biederman Signed-off-by: Linus Torvalds --- diff --git a/arch/x86_64/kernel/io_apic.c b/arch/x86_64/kernel/io_apic.c index e0648380fdde..74671defbbe3 100644 --- a/arch/x86_64/kernel/io_apic.c +++ b/arch/x86_64/kernel/io_apic.c @@ -244,9 +244,7 @@ static void set_ioapic_affinity_irq(unsigned int irq, cpumask_t mask) cpus_and(tmp, mask, cpu_online_map); if (cpus_empty(tmp)) - tmp = TARGET_CPUS; - - cpus_and(mask, tmp, CPU_MASK_ALL); + return; vector = assign_irq_vector(irq, mask, &tmp); if (vector < 0) @@ -1890,9 +1888,7 @@ static void set_msi_irq_affinity(unsigned int irq, cpumask_t mask) cpus_and(tmp, mask, cpu_online_map); if (cpus_empty(tmp)) - tmp = TARGET_CPUS; - - cpus_and(mask, tmp, CPU_MASK_ALL); + return; vector = assign_irq_vector(irq, mask, &tmp); if (vector < 0) @@ -1985,9 +1981,7 @@ static void set_ht_irq_affinity(unsigned int irq, cpumask_t mask) cpus_and(tmp, mask, cpu_online_map); if (cpus_empty(tmp)) - tmp = TARGET_CPUS; - - cpus_and(mask, tmp, CPU_MASK_ALL); + return; vector = assign_irq_vector(irq, mask, &tmp); if (vector < 0)