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: 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>

diff --git a/drivers/gpu/drm/xe/xe_gt_freq.c b/drivers/gpu/drm/xe/xe_gt_freq.c
index 4ff1b6b58d6be4150ebbb7886e32290b7d0ccd7b..701349251bbc5076cb69a02e2467e4d30bbf4709 100644 (file)
--- a/drivers/gpu/drm/xe/xe_gt_freq.c
+++ b/drivers/gpu/drm/xe/xe_gt_freq.c
@@ -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);