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| author | Jiri Kosina <jkosina@suse.cz> | 2020-10-15 20:37:01 +0200 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2020-10-15 20:37:01 +0200 |
| commit | 62b31a045757eac81fed94b19df47418a0818528 (patch) | |
| tree | 285fda56df8304dff6ba929bad65ddfb4e4fd726 /kernel/irq/matrix.c | |
| parent | cc51d171776f3a6acb6828bad0b780a4cacf5423 (diff) | |
| parent | c27e08820bc6cb7d483a8d87589bdbbbf10f2306 (diff) | |
Merge branch 'for-5.10/core' into for-linus
- nonblocking read semantics fix for hid-debug
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 30cc217b8631..651a4ad6d711 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; |