Adjust the exit condition for assigning the affinity vectors to take the pre_vectors into account. Otherwise the last vector will get a cpu mask for all CPUs by accidentally hitting the post_vectors case.
Signed-off-by: Christoph Hellwig <[email protected]> --- kernel/irq/affinity.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c index 17360bd..2ca420a 100644 --- a/kernel/irq/affinity.c +++ b/kernel/irq/affinity.c @@ -107,7 +107,9 @@ irq_create_affinity_masks(int nvecs, const struct irq_affinity *affd) /* Calculate the number of cpus per vector */ ncpus = cpumask_weight(nmsk); - for (v = 0; curvec < affv && v < vecs_to_assign; curvec++, v++) { + for (v = 0; + curvec < affd->pre_vectors + affv && v < vecs_to_assign; + curvec++, v++) { cpus_per_vec = ncpus / vecs_to_assign; /* Account for extra vectors to compensate rounding errors */ -- 2.1.4
