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| author | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-14 06:57:52 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-09-14 06:57:52 +0200 |
| commit | 1622d35453132a1acd6d650175f9f45e4bcf553e (patch) | |
| tree | 063a2dfa220452590d068418c2b16b90690dae5a /kernel/irq/matrix.c | |
| parent | 978620cc4f5577c5139da9d8377849aeac46687a (diff) | |
| parent | 856deb866d16e29bd65952e0289066f6078af773 (diff) | |
Merge 5.9-rc5 into staging-next
We want the staging/iio changes in here as well.
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'kernel/irq/matrix.c')
| -rw-r--r-- | kernel/irq/matrix.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/kernel/irq/matrix.c b/kernel/irq/matrix.c index 30cc217b86318..651a4ad6d711f 100644 --- a/kernel/irq/matrix.c +++ b/kernel/irq/matrix.c @@ -380,6 +380,13 @@ int irq_matrix_alloc(struct irq_matrix *m, const struct cpumask *msk, unsigned int cpu, bit; struct cpumap *cm; + /* + * Not required in theory, but matrix_find_best_cpu() uses + * for_each_cpu() which ignores the cpumask on UP . + */ + if (cpumask_empty(msk)) + return -EINVAL; + cpu = matrix_find_best_cpu(m, msk); if (cpu == UINT_MAX) return -ENOSPC; |