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drm/xe: Prevent runtime PM wake while reading rp0 frequency

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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: Badal Nilawar <badal.nilawar@intel.com>
Reviewed-by: Vinay Belgaumkar <vinay.belgaumkar@intel.com>
Reviewed-by: Karthik Poosa <karthik.poosa@intel.com>
Link: https://lore.kernel.org/r/20251015094611.1468939-1-badal.nilawar@intel.com
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
This commit is contained in:
Badal Nilawar 2025-10-15 15:16:11 +05:30 committed by Rodrigo Vivi
parent 409b949909
commit 95af815574
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1 changed files with 1 additions and 6 deletions
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7
drivers/gpu/drm/xe/xe_gt_freq.c
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@ -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);