[PATCH] genirq/affinity: Fix build waring in __irq_build_affinity_masks

From: Ming Lei
Date: Wed Aug 28 2019 - 04:58:27 EST


When CONFIG_CPUMASK_OFFSTACK isn't enabled, 'cpumask_var_t' will be
defined as 'typedef struct cpumask cpumask_var_t[1]', so we can't
declare the argument of 'node_to_cpumask' as 'const cpumask_var_t *'
for alloc_nodes_vectors().

Fixes the following warning:

kernel/irq/affinity.c: In function '__irq_build_affinity_masks':
>> kernel/irq/affinity.c:287:31: warning: passing argument 2 of 'alloc_nodes_vectors' from incompatible pointer type
alloc_nodes_vectors(numvecs, node_to_cpumask, cpu_mask,
^
kernel/irq/affinity.c:128:13: note: expected 'const struct cpumask (*)[1]' but argument is of type 'struct cpumask (*)[1]'
static void alloc_nodes_vectors(unsigned int numvecs,
^

Fixes: b1a5a73e64e9 ("genirq/affinity: Spread vectors on node according to nr_cpu ratio")
Reported-by: kbuild test robot <lkp@xxxxxxxxx>
Cc: Keith Busch <kbusch@xxxxxxxxxx>
Cc: Jon Derrick <jonathan.derrick@xxxxxxxxx>
Signed-off-by: Ming Lei <ming.lei@xxxxxxxxxx>
---
kernel/irq/affinity.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/kernel/irq/affinity.c b/kernel/irq/affinity.c
index d905e844bf3a..4d89ad4fae3b 100644
--- a/kernel/irq/affinity.c
+++ b/kernel/irq/affinity.c
@@ -126,7 +126,7 @@ static int ncpus_cmp_func(const void *l, const void *r)
* for each node.
*/
static void alloc_nodes_vectors(unsigned int numvecs,
- const cpumask_var_t *node_to_cpumask,
+ cpumask_var_t *node_to_cpumask,
const struct cpumask *cpu_mask,
const nodemask_t nodemsk,
struct cpumask *nmsk,
--
2.20.1