Unverified Commit 95af8155 authored by Badal Nilawar's avatar Badal Nilawar Committed by Rodrigo Vivi
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drm/xe: Prevent runtime PM wake while reading rp0 frequency 



The rp0 frequency is a fused value that is read once during probe
and then cached, so there’s no need to trigger a runtime wake
when accessing rp0.

Signed-off-by: default avatarBadal Nilawar <badal.nilawar@intel.com>
Reviewed-by: default avatarVinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: default avatarKarthik Poosa <karthik.poosa@intel.com>
Link: https://lore.kernel.org/r/20251015094611.1468939-1-badal.nilawar@intel.com


Signed-off-by: default avatarRodrigo Vivi <rodrigo.vivi@intel.com>
parent 409b9499

drivers/gpu/drm/xe/xe_gt_freq.c

+1 −6
Original line number Diff line number Diff line
@@ -99,13 +99,8 @@ static ssize_t rp0_freq_show(struct kobject *kobj, 
{

	struct device *dev = kobj_to_dev(kobj);

	struct xe_guc_pc *pc = dev_to_pc(dev);

	u32 freq;



	xe_pm_runtime_get(dev_to_xe(dev));

	freq = xe_guc_pc_get_rp0_freq(pc);

	xe_pm_runtime_put(dev_to_xe(dev));



	return sysfs_emit(buf, "%d\n", freq);

	return sysfs_emit(buf, "%d\n", xe_guc_pc_get_rp0_freq(pc));

}

static struct kobj_attribute attr_rp0_freq = __ATTR_RO(rp0_freq);