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drivers/bus: arm-cci: fix build warnings

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When the arm-cci driver is enabled, but both CONFIG_ARM_CCI5xx_PMU and
CONFIG_ARM_CCI400_PMU are not, we get a warning about how parts of
the driver are never used:

drivers/perf/arm-cci.c:1454:29: error: 'cci_pmu_models' defined but not used [-Werror=unused-variable]
drivers/perf/arm-cci.c:693:16: error: 'cci_pmu_event_show' defined but not used [-Werror=unused-function]
drivers/perf/arm-cci.c:685:16: error: 'cci_pmu_format_show' defined but not used [-Werror=unused-function]

Marking all three functions as __maybe_unused avoids the warnings in
randconfig builds. I'm doing this lacking any ideas for a better fix.

Fixes: 3de6be7a3d ("drivers/bus: Split Arm CCI driver")
Reviewed-by: Robin Murphy <robin.murphy@arm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Will Deacon <will.deacon@arm.com>
This commit is contained in:
Arnd Bergmann 2018-05-28 17:41:47 +02:00 committed by Will Deacon
parent b89205bd50
commit 984e9cf1b9
1 changed files with 3 additions and 3 deletions
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6
drivers/perf/arm-cci.c
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@ -120,9 +120,9 @@ enum cci_models {
static void pmu_write_counters(struct cci_pmu *cci_pmu, static void pmu_write_counters(struct cci_pmu *cci_pmu,
unsigned long *mask); unsigned long *mask);
static ssize_t cci_pmu_format_show(struct device *dev, static ssize_t __maybe_unused cci_pmu_format_show(struct device *dev,
struct device_attribute *attr, char *buf); struct device_attribute *attr, char *buf);
static ssize_t cci_pmu_event_show(struct device *dev, static ssize_t __maybe_unused cci_pmu_event_show(struct device *dev,
struct device_attribute *attr, char *buf); struct device_attribute *attr, char *buf);
#define CCI_EXT_ATTR_ENTRY(_name, _func, _config) \ #define CCI_EXT_ATTR_ENTRY(_name, _func, _config) \
@ -1451,7 +1451,7 @@ static int cci_pmu_offline_cpu(unsigned int cpu)
return 0; return 0;
} }
static struct cci_pmu_model cci_pmu_models[] = { static __maybe_unused struct cci_pmu_model cci_pmu_models[] = {
#ifdef CONFIG_ARM_CCI400_PMU #ifdef CONFIG_ARM_CCI400_PMU
[CCI400_R0] = { [CCI400_R0] = {
.name = "CCI_400", .name = "CCI_400",