drivers: CCI: fix used_mask init in validate_group()

Currently in validate_group(), there is a static initializer
for fake_pmu.used_mask which is based on CPU_BITS_NONE but
the used_mask array size is based on CCI_PMU_MAX_HW_EVENTS.
CCI_PMU_MAX_HW_EVENTS is not based on NR_CPUS, so CPU_BITS_NONE
is not correct and will cause a build failure if NR_CPUS
is set high enough to make CPU_BITS_NONE larger than used_mask.

Reviewed-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Mark Salter <msalter@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index b854125e48311aa1e101c8ea9ab6ff0ec909753c..5340604b23a4e1b24b0c01bf3798dbc35fcda40a 100644 (file)
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -660,7 +660,7 @@ validate_group(struct perf_event *event)
                 * Initialise the fake PMU. We only need to populate the
                 * used_mask for the purposes of validation.
                 */
-               .used_mask = CPU_BITS_NONE,
+               .used_mask = { 0 },
        };
 
        if (!validate_event(event->pmu, &fake_pmu, leader))