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Subject[PATCH v2 26/26] drm/i915/gt: Remove #ifdef guards for PM related functions
Date
Instead of defining two versions of intel_sysfs_rc6_init(), one for each
value of CONFIG_PM, add a check on !IS_ENABLED(CONFIG_PM) early in the
function. This will allow the compiler to automatically drop the dead
code when CONFIG_PM is disabled, without having to use #ifdef guards.

This has the advantage of always compiling these functions in,
independently of any Kconfig option. Thanks to that, bugs and other
regressions are subsequently easier to catch.

Signed-off-by: Paul Cercueil <paul@crapouillou.net>
---
Cc: Jani Nikula <jani.nikula@linux.intel.com>
Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com>
Cc: Rodrigo Vivi <rodrigo.vivi@intel.com>
Cc: Tvrtko Ursulin <tvrtko.ursulin@linux.intel.com>
Cc: intel-gfx@lists.freedesktop.org
---
drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c | 8 +-------
1 file changed, 1 insertion(+), 7 deletions(-)

diff --git a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c
index cf71305ad586..09b9365ededd 100644
--- a/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c
+++ b/drivers/gpu/drm/i915/gt/intel_gt_sysfs_pm.c
@@ -164,7 +164,6 @@ sysfs_gt_attribute_r_func(struct kobject *kobj, struct attribute *attr,
NULL); \
INTEL_GT_ATTR_RO(_name)

-#ifdef CONFIG_PM
static u32 get_residency(struct intel_gt *gt, enum intel_rc6_res_type id)
{
intel_wakeref_t wakeref;
@@ -300,7 +299,7 @@ static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj)
{
int ret;

- if (!HAS_RC6(gt->i915))
+ if (!IS_ENABLED(CONFIG_PM) || !HAS_RC6(gt->i915))
return;

ret = __intel_gt_sysfs_create_group(kobj, rc6_attr_group);
@@ -329,11 +328,6 @@ static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj)
gt->info.id, ERR_PTR(ret));
}
}
-#else
-static void intel_sysfs_rc6_init(struct intel_gt *gt, struct kobject *kobj)
-{
-}
-#endif /* CONFIG_PM */

static u32 __act_freq_mhz_show(struct intel_gt *gt)
{
--
2.35.1
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